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* vme: Fix a possible sleep-in-atomic bug in vme_tsi148Jia-Ju Bai2017-12-181-1/+1
| | | | | | | | | | | | | | | The driver may sleep under a spinlock. The function call path is: tsi148_master_write \ tsi148_master_read (acquire the spinlock) vme_register_error_handler kmalloc(GFP_KERNEL) --> may sleep To fix it, GFP_KERNEL is replaced with GFP_ATOMIC. This bug is found by my static analysis tool(DSAC) and checked by my code review. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'char-misc-4.15-rc1' of ↵Linus Torvalds2017-11-164-239/+166
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc updates from Greg KH: "Here is the big set of char/misc and other driver subsystem patches for 4.15-rc1. There are small changes all over here, hyperv driver updates, pcmcia driver updates, w1 driver updats, vme driver updates, nvmem driver updates, and lots of other little one-off driver updates as well. The shortlog has the full details. All of these have been in linux-next for quite a while with no reported issues" * tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits) VME: Return -EBUSY when DMA list in use w1: keep balance of mutex locks and refcnts MAINTAINERS: Update VME subsystem tree. nvmem: sunxi-sid: add support for A64/H5's SID controller nvmem: imx-ocotp: Update module description nvmem: imx-ocotp: Enable i.MX7D OTP write support nvmem: imx-ocotp: Add i.MX7D timing write clock setup support nvmem: imx-ocotp: Move i.MX6 write clock setup to dedicated function nvmem: imx-ocotp: Add support for banked OTP addressing nvmem: imx-ocotp: Pass parameters via a struct nvmem: imx-ocotp: Restrict OTP write to IMX6 processors nvmem: uniphier: add UniPhier eFuse driver dt-bindings: nvmem: add description for UniPhier eFuse nvmem: set nvmem->owner to nvmem->dev->driver->owner if unset nvmem: qfprom: fix different address space warnings of sparse nvmem: mtk-efuse: fix different address space warnings of sparse nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it nvmem: imx-iim: use stack for nvmem_config instead of malloc'ing it thunderbolt: tb: fix use after free in tb_activate_pcie_devices MAINTAINERS: Add git tree for Thunderbolt development ...
| * VME: Return -EBUSY when DMA list in useMartyn Welch2017-11-081-1/+1
| | | | | | | | | | | | | | | | | | | | The VME subsystem currently returns -EBUSY when trying to free a DMA resource that is busy, but returns -EINVAL when trying to free a DMA list that is in use. Switch to returning -EBUSY when trying to free a DMA list that is in use for consistency and correctness. Signed-off-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * Merge tag 'vme-next-4.14-rc4' of https://gitlab.collabora.com/martyn/linux ↵Greg Kroah-Hartman2017-10-204-228/+157
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into char-misc-next Martyn writes: VME Subsystem changes for master v4.14-rc4: - Corrections across the VME subsystem to better align with the preferred kernel coding style.
| | * vme: tsi148: Adjust 14 checks for null pointersMarkus Elfring2017-10-131-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written … Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: tsi148: Improve 17 size determinationsMarkus Elfring2017-10-131-19/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the specification of data structures by variable references as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> [martyn@welchs.me.uk: Correct long line] Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: tsi148: Delete nine error messages for a failed memory allocationMarkus Elfring2017-10-131-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Omit extra messages for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: ca91cx42: Adjust 14 checks for null pointersMarkus Elfring2017-10-131-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written … Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: ca91cx42: Improve 12 size determinationsMarkus Elfring2017-10-131-17/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the specification of data structures by variable references as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: ca91cx42: Delete eight error messages for a failed memory allocationMarkus Elfring2017-10-131-16/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Omit extra messages for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: fake: Adjust 11 checks for null pointersMarkus Elfring2017-10-131-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written … Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: fake: Improve five size determinations in fake_init()Markus Elfring2017-10-131-7/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the specification of data structures by pointer dereferences as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: fake: Delete an error message for a failed memory allocation in fake_init()Markus Elfring2017-10-131-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: Return directly in two functionsMarkus Elfring2017-10-131-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | Return directly without using an intermediate local variable in these functions. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: Adjust 48 checks for null pointersMarkus Elfring2017-10-131-53/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written … Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: Move an assignment in vme_new_dma_list()Markus Elfring2017-10-131-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | Assign a pointer to a data structure member without using an intermediate local variable. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: Improve 11 size determinationsMarkus Elfring2017-10-131-13/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the specification of data structures by pointer dereferences as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| | * vme: Delete 11 error messages for a failed memory allocationMarkus Elfring2017-10-131-35/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | Omit extra messages for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
| * | vme: Fix integer overflow checking in vme_check_window()Dan Carpenter2017-10-041-10/+8
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The controversial part of this patch is that I've changed it so we now prevent integer overflows for VME_USER types and before we didn't. I view it as kernel-hardening. I looked at a couple places that used VME_USER types and they seemed pretty suspicious so I'm pretty sure preventing overflows here is a good idea. The most common problem which this function is for cases like VME_A16 where we don't put an upper bound on "size" so you could have "size" set to U64_MAX and a valid vme_base would overflow the "vme_base + size" into the valid range as well. In the VME_A64 case, the integer overflow checking doesn't work because "U64_MAX + 1" has an integer overflow and it's just a complicated way of saying zero. That VME_A64 case is sort of interesting as well because there is a VME_A64_MAX define which is set to "U64_MAX + 1". The compiler will never let anyone use it since it can't be stored in a u64 variable... With my patch it's now limited to just U64_MAX. Anyway, I put one integer overflow check at the start of the function and deleted all existing checks. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* / License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-021-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* docs: Add kernel-doc comments to VME driver APIMartyn Welch2017-03-171-31/+438
| | | | | | | | | Add kernel-doc comments to the VME driver API and structures. This documentation will be integrated into the RST documentation in a later patch. Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* VME: restore bus_remove function causing incomplete module unloadStefano Babic2017-01-251-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | Commit 050c3d52cc7810d9d17b8cd231708609af6876ae ("vme: make core vme support explicitly non-modular") dropped the remove function because it appeared as if it was for removal of the bus, which is not supported. However, vme_bus_remove() is called when a VME device is removed from the bus and not when the bus is removed; as it calls the VME device driver's cleanup function. Without this function, the remove() in the VME device driver is never called and VME device drivers cannot be reloaded again. Here we restore the remove function that was deleted in that commit, and the reference to the function in the bus structure. Fixes: 050c3d52cc78 ("vme: make core vme support explicitly non-modular") Cc: Manohar Vanga <manohar.vanga@gmail.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Cc: devel@driverdev.osuosl.org Signed-off-by: Stefano Babic <sbabic@denx.de> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: stable <stable@vger.kernel.org> # 4.9 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: Fix wrong pointer utilization in ca91cx42_slave_getAugusto Mecking Caringi2017-01-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | In ca91cx42_slave_get function, the value pointed by vme_base pointer is set through: *vme_base = ioread32(bridge->base + CA91CX42_VSI_BS[i]); So it must be dereferenced to be used in calculation of pci_base: *pci_base = (dma_addr_t)*vme_base + pci_offset; This bug was caught thanks to the following gcc warning: drivers/vme/bridges/vme_ca91cx42.c: In function ‘ca91cx42_slave_get’: drivers/vme/bridges/vme_ca91cx42.c:467:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] *pci_base = (dma_addr_t)vme_base + pci_offset; Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com> Acked-By: Martyn Welch <martyn@welchs.me.uk> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: vme_get_size potentially returning incorrect value on failureMartyn Welch2016-10-281-0/+4
| | | | | | | | | | | The function vme_get_size returns the size of the window to the caller, however it doesn't check the return value of the call to vme_master_get. Return 0 on failure rather than anything else. Suggested-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: fake: remove unexpected unlock in fake_master_set()Wei Yongjun2016-09-271-3/+0
| | | | | | | | | image->lock is unlocked in some error handling path without take the lock, so remove those unexpected unlock. Fixes: 658bcdae9c67 ("vme: Adding Fake VME driver") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: fake: mark symbols static where possibleBaoyou Xie2016-09-271-8/+8
| | | | | | | | | | | | | | | | We get 4 warnings when building kernel with W=1: drivers/vme/bridges/vme_fake.c:384:6: warning: no previous prototype for 'fake_lm_check' [-Wmissing-prototypes] drivers/vme/bridges/vme_fake.c:619:6: warning: no previous prototype for 'fake_vmewrite8' [-Wmissing-prototypes] drivers/vme/bridges/vme_fake.c:649:6: warning: no previous prototype for 'fake_vmewrite16' [-Wmissing-prototypes] drivers/vme/bridges/vme_fake.c:679:6: warning: no previous prototype for 'fake_vmewrite32' [-Wmissing-prototypes] In fact, these functions are only used in the file in which they are declared and don't need a declaration, but can be made static. so this patch marks these functions with 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: fake: fix build for 64-bit dma_addr_tArnd Bergmann2016-09-131-8/+18
| | | | | | | | | | | | | | | | | | casting between dma_addr_t and a pointer is generally tricky, as they might not be the same size and almost never point into the same address space. With 32-bit ARM systems and LPAE, we get this warning for the vme_fake driver that stores a pointer in a dma_addr_t variable: drivers/vme/bridges/vme_fake.c: In function 'fake_slave_set': drivers/vme/bridges/vme_fake.c:204:29: error: assignment makes pointer from integer without a cast [-Werror=int-conversion] To make this clearer while fixing the warning, I'm adding a set of helper functions for the type conversion. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: Adding Fake VME driverMartyn Welch2016-08-313-0/+1308
| | | | | | | | | | This patch introduces a fake VME bridge driver. This driver currently emulates a subset of the VME bridge functionality. This allows some VME subsystem development and even some VME device driver development to be carried out in the absence of a proper VME bus. Signed-off-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: make core vme support explicitly non-modularPaul Gortmaker2016-08-311-25/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | The Kconfig currently controlling compilation of this code is: drivers/vme/Kconfig:menuconfig VME_BUS drivers/vme/Kconfig: bool "VME bridge support" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. We replace module.h and moduleparam.h (unused) with init.h and also export.h ; the latter since this file does export some syms. Since this is a struct bus_type and not a platform_driver, we don't have any ".suppress_bind_attrs" to be concerned about when we drop the ".remove" code from this file. Since module_init was not in use by this code, the init ordering remains unchanged with this commit. Cc: Manohar Vanga <manohar.vanga@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: Fix module autoloadAlessio Igor Bogani2016-08-312-0/+4
| | | | | | | | | These drivers have a PCI device ID table but the PCI module alias information is not created so module autoloading won't work. Signed-off-by: Alessio Igor Bogani <alessio.bogani@elettra.eu> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: change LM callback argument to void pointerAaron Sierra2016-08-316-9/+16
| | | | | | | | | | | | | | | | | | | | | Make the location monitor callback function prototype more useful by changing the argument from an integer to a void pointer. All VME bridge drivers were simply passing the location monitor index (e.g. 0-3) as the argument to these callbacks. It is much more useful to pass back a pointer to data that the callback-registering driver cares about. There appear to be no in-kernel callers of vme_lm_attach (or vme_lme_request for that matter), so this change only affects the VME subsystem and bridge drivers. This has been tested with Tsi148 hardware, but the CA91Cx42 changes have only been compiled. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: add vme_init_bridge for common bridge initAaron Sierra2016-05-014-16/+17
| | | | | | | | | | | | | | Consolidate vme_bridge structure setup that every bridge was required to do itself. This came about because .irq_mtx is only used within the VME core, but was required to be setup externally. This returns the structure passed in to support shorthand like this: bridge = vme_init_bridge(&priv->bridge); Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: trivial spelling and capitalization fixesAaron Sierra2016-05-011-6/+6
| | | | | | | | | Fix a typo in the spurious interrupt warning and consistently capitalize VME, PCI, and DMA acronyms. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: vme_ca91cx42.c: use to_pci_dev()Geliang Tang2016-02-071-6/+5
| | | | | | | | Use to_pci_dev() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'char-misc-4.4-rc1' of ↵Linus Torvalds2015-11-041-1/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver update for 4.4-rc1. Lots of different driver and subsystem updates, hwtracing being the largest with the addition of some new platforms that are now supported. Full details in the shortlog. All of these have been in linux-next for a long time with no reported issues" * tag 'char-misc-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (181 commits) fpga: socfpga: Fix check of return value of devm_request_irq lkdtm: fix ACCESS_USERSPACE test mcb: Destroy IDA on module unload mcb: Do not return zero on error path in mcb_pci_probe() mei: bus: set the device name before running fixup mei: bus: use correct lock ordering mei: Fix debugfs filename in error output char: ipmi: ipmi_ssif: Replace timeval with timespec64 fpga: zynq-fpga: Fix issue with drvdata being overwritten. fpga manager: remove unnecessary null pointer checks fpga manager: ensure lifetime with of_fpga_mgr_get fpga: zynq-fpga: Change fw format to handle bin instead of bit. fpga: zynq-fpga: Fix unbalanced clock handling misc: sram: partition base address belongs to __iomem space coresight: etm3x: adding documentation for sysFS's cpu interface vme: 8-bit status/id takes 256 values, not 255 fpga manager: Adding FPGA Manager support for Xilinx Zynq 7000 ARM: zynq: dt: Updated devicetree for Zynq 7000 platform. ARM: dt: fpga: Added binding docs for Xilinx Zynq FPGA manager. ver_linux: proc/modules, limit text processing to 'sed' ...
| * vme: 8-bit status/id takes 256 values, not 255Dmitry Kalinkin2015-10-171-1/+3
| | | | | | | | | | | | | | Fixes an off by one array size. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vme: tsi148: silence uninitialized variable warningDmitry Kalinkin2015-10-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The warning is a false positive. drivers/vme/bridges/vme_tsi148.c: In function 'tsi148_master_write': drivers/vme/bridges/vme_tsi148.c:1358:31: warning: 'handler' may be used uninitialized in this function [-Wmaybe-uninitialized] vme_unregister_error_handler(handler); ^ drivers/vme/bridges/vme_tsi148.c: In function 'tsi148_master_read': drivers/vme/bridges/vme_tsi148.c:1260:31: warning: 'handler' may be used uninitialized in this function [-Wmaybe-uninitialized] vme_unregister_error_handler(handler); ^ Fixes: 0b0496625715 ("vme: change bus error handling scheme") Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vme: print unhandled VME access errorsDmitry Kalinkin2015-10-041-0/+7
| | | | | | | | | | | | | | | | This will enable error messages for accesses done through mmap. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vme: change bus error handling schemeDmitry Kalinkin2015-10-044-110/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current VME bus error handler adds errors to the bridge error list. vme_master_{read,write} then traverses that list to look for relevant errors. Such scheme didn't work well for accesses going through vme_master_mmap because they would also allocate a vme_bus_error, but have no way to do vme_clear_errors call to free that memory. This changes the error handling process to be other way around: now vme_master_{read,write} defines a window in VME address space that will catch possible errors. VME bus error interrupt only traverses these windows and marks those that had errors in them. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vme: include address space in error filteringDmitry Kalinkin2015-10-043-23/+46
| | | | | | | | | | | | | | | | | | | | Also changes vme_bus_error_handler to take generic address modifier code instead of raw contents of a device-specific attribute register. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vme: move tsi148 error handling into VME subsystemDmitry Kalinkin2015-10-043-86/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Error handling code found in tsi148 is not device specific. In fact it already relies on shared vme_bus_error struct and vme_bridge.vme_errors field. The other bridge driver could reuse this code if it is shared. This introduces a slight behavior change: vme error message won't be triggered in a rare case when err_chk=1 and kmalloc fails. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Acked-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vme: lower alignment requirement in pci bridge driversDmitry Kalinkin2015-10-042-2/+2
|/ | | | | | | | | | | | | | Universe II allows PCI address grannularity of 4K or 64K depending on the window id. tsi148 only supports 64K. Existing driver implementations are validating window size against this grannularity and then use that very size as alignment parameter to pci_bus_alloc_resource. This constraint is excessive, alignment by granularity should be enough. This changes alignment constraint from size to a fixed constraint of 64K. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: tsi148: depend on HAS_DMA for KconfigDmitry Kalinkin2015-06-121-1/+1
| | | | | | Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: ca91cx42: fix LM_CTL address maskDmitry Kalinkin2015-06-121-1/+1
| | | | | | | | | | | | | | | | | | | | Universe II datasheet defines following address space values for LM_CTL[16:18] 000=A16 001=A24 010=A32 011,100,101=Reserved 110=User1 111=User2 Mask 5<<16 is not the right one for matching [16:18], instead we should use 7<<16. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: ca91cx42: return error code on DMA errorDmitry Kalinkin2015-06-121-0/+1
| | | | | | Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: export vme_check_window()Dmitry Kalinkin2015-06-121-2/+3
| | | | | | Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: check for A64 overflow in vme_check_window()Dmitry Kalinkin2015-06-121-4/+2
| | | | | | Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: stop DMA transfer on interruptionDmitry Kalinkin2015-06-122-5/+27
| | | | | | Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: tsi148: fix first DMA item mappingDmitry Kalinkin2015-06-121-11/+12
| | | | | | | | | | | | | This moves DMA mapping of the first list element to vme_list_add, the same place where other elements mappings occur. This prevents extra mapping or over-unmapping in the cases when vme_list_exec is called more or less than one time respectively. Also adds dma_mapping_error check. Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* vme: tsi148: fix DMA lists longer that one itemDmitry Kalinkin2015-06-121-2/+2
| | | | | | | | | | | DMA lists on tsi148 weren't processed further than the first item because of the broken logic. This regression was introduced in: ac1a4f2caf7b071 "Staging: VME: Ensure TSI148 link list descriptors..." Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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