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* uio: Fix an Oops on loadDan Carpenter2018-11-271-2/+5
| | | | | | | | | | | | | | | | | | | | commit 432798195bbce1f8cd33d1c0284d0538835e25fb upstream. I was trying to solve a double free but I introduced a more serious NULL dereference bug. The problem is that if there is an IRQ which triggers immediately, then we need "info->uio_dev" but it's not set yet. This patch puts the original initialization back to how it was and just sets info->uio_dev to NULL on the error path so it should solve both the Oops and the double free. Fixes: f019f07ecf6a ("uio: potential double frees if __uio_register_device() fails") Reported-by: Mathias Thore <Mathias.Thore@infinera.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: stable <stable@vger.kernel.org> Tested-by: Mathias Thore <Mathias.Thore@infinera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: ensure class is registered before devicesAlexandre Belloni2018-11-221-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit ae61cf5b9913027c6953a79ed3894da4f47061bd ] When both uio and the uio drivers are built in the kernel, it is possible for a driver to register devices before the uio class is registered. This may result in a NULL pointer dereference later on in get_device_parent() when accessing the class glue_dirs spinlock. The trace looks like that: Unable to handle kernel NULL pointer dereference at virtual address 00000140 [...] [<ffff0000089cc234>] _raw_spin_lock+0x14/0x48 [<ffff0000084f56bc>] device_add+0x154/0x6a0 [<ffff0000084f5e48>] device_create_groups_vargs+0x120/0x128 [<ffff0000084f5edc>] device_create+0x54/0x60 [<ffff0000086e72c0>] __uio_register_device+0x120/0x4a8 [<ffff000008528b7c>] jaguar2_pci_probe+0x2d4/0x558 [<ffff0000083fc18c>] local_pci_probe+0x3c/0xb8 [<ffff0000083fd81c>] pci_device_probe+0x11c/0x180 [<ffff0000084f88bc>] driver_probe_device+0x22c/0x2d8 [<ffff0000084f8a24>] __driver_attach+0xbc/0xc0 [<ffff0000084f69fc>] bus_for_each_dev+0x4c/0x98 [<ffff0000084f81b8>] driver_attach+0x20/0x28 [<ffff0000084f7d08>] bus_add_driver+0x1b8/0x228 [<ffff0000084f93c0>] driver_register+0x60/0xf8 [<ffff0000083fb918>] __pci_register_driver+0x40/0x48 Return EPROBE_DEFER in that case so the driver can register the device later. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: potential double frees if __uio_register_device() failsDan Carpenter2018-09-261-2/+1
| | | | | | | | | | | | | | | | | | [ Upstream commit f019f07ecf6a6b8bd6d7853bce70925d90af02d1 ] The uio_unregister_device() function assumes that if "info->uio_dev" is non-NULL that means "info" is fully allocated. Setting info->uio_de has to be the last thing in the function. In the current code, if request_threaded_irq() fails then we return with info->uio_dev set to non-NULL but info is not fully allocated and it can lead to double frees. Fixes: beafc54c4e2f ("UIO: Add the User IO core code") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: Export definition of struct uio_deviceAndy Grover2014-10-021-12/+0
| | | | | | | | | | In order to prevent a O(n) search of the filesystem to link up its uio node with its target configuration, TCMU needs to know the minor number that UIO assigned. Expose the definition of this struct so TCMU can access this field. Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* Merge 3.16-rc5 into char-misc-nextGreg Kroah-Hartman2014-07-131-1/+1
|\ | | | | | | | | | | | | This resolves a number of merge issues with changes in this tree and Linus's tree at the same time. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * Revert "uio: fix vma io range check in mmap"Greg Kroah-Hartman2014-06-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit ddb09754e6c7239e302c7b675df9bbd415f8de5d. Linus objected to this originally, I can see why it might be needed, but given that no one spoke up defending this patch, I'm going to revert it. If you have hardware that requires this change, please speak up in the future and defend the patch. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Bin Wang <binw@marvell.com> Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Cc: Norbert Ciosek <norbertciosek@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio: uio_pruss: use struct deviceAndre Heider2014-07-091-18/+19
|/ | | | | | | | Get rid of the repeating &dev->dev constructs and prevent introducing new ones. Signed-off-by: Andre Heider <a.heider@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: fix vma io range check in mmapBin Wang2014-05-271-1/+1
| | | | | | | | | | | | | | | | | the vma range size is always page size aligned in mmap, while the real io space range may not be page aligned, thus leading to range check failure in the uio_mmap_physical(). for example, in a case of io range size "mem->size == 1KB", and we have (vma->vm_end - vma->vm_start) == 4KB, due to "len" is aligned to page size in do_mmap_pgoff(). now fix this issue by align mem->size to page size in the check. Signed-off-by: Bin Wang <binw@marvell.com> Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers: uio_dmem_genirq: Fix memory leak in uio_dmem_genirq_probe()Daeseok Youn2014-05-271-2/+2
| | | | | | | | | | | | | When platform_get_irq() is failed after "priv" allocated, it need to free "priv". But the label of bad0 doesn't try to free about "priv". So this patch changes that lable to "bad1". But "bad1" has pm_runtime_disable() call, this function should be called when uio_register_device() is failed. So it is moved into handling error for uio_register_device(). Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Signed-off-by: Hans J. Koch <hjk@hansjkoch.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: fix devm_request_irq usageAaro Koskinen2013-12-201-1/+1
| | | | | | | | | | | | | Commit e6789cd3dfb553077606ccafeb05e0043f072481 (uio: Simplify uio error path by using devres functions) converted uio to use devm_request_irq(). This introduced a change in behaviour since the IRQ is associated with the parent device instead of the created UIO device. The IRQ will remain active after uio_unregister_device() is called, and some drivers will crash because of this. The patch fixes this. Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com> Cc: stable <stable@vger.kernel.org> # 3.13 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge 3.13-rc4 into char-misc-nextGreg Kroah-Hartman2013-12-161-0/+2
|\ | | | | | | We want these fixes in here.
| * uio: we cannot mmap unaligned page contentsLinus Torvalds2013-12-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 7314e613d5ff ("Fix a few incorrectly checked [io_]remap_pfn_range() calls") the uio driver started more properly checking the passed-in user mapping arguments against the size of the actual uio driver data. That in turn exposed that some driver authors apparently didn't realize that mmap can only work on a page granularity, and had tried to use it with smaller mappings, with the new size check catching that out. So since it's not just the user mmap() arguments that can be confused, make the uio mmap code also verify that the uio driver has the memory allocated at page boundaries in order for mmap to work. If the device memory isn't properly aligned, we return [ENODEV] The fildes argument refers to a file whose type is not supported by mmap(). as per the open group documentation on mmap. Reported-by: Holger Brunck <holger.brunck@keymile.com> Acked-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | uio: uio_mf624: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han2013-12-081-1/+1
|/ | | | | | | | Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers/uio/uio_pruss.c: use gen_pool_dma_alloc() to allocate sram memoryNicolin Chen2013-11-131-4/+2
| | | | | | | | | | Since gen_pool_dma_alloc() is introduced, we implement it to simplify code. Signed-off-by: Nicolin Chen <b42378@freescale.com> Cc: "Hans J. Koch" <hjk@hansjkoch.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'char-misc-3.13-rc1' of ↵Linus Torvalds2013-11-077-51/+30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc patches from Greg KH: "Here's the big char/misc driver patchset for 3.13-rc1. Lots of stuff in here, including some new drivers for Intel's "MIC" co-processor devices, and a new eeprom driver. Other things include the driver attribute cleanups, extcon driver updates, hyperv updates, and a raft of other miscellaneous driver fixes. All of these have been in linux-next for a while" * tag 'char-misc-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (121 commits) misc: mic: Fixes for randconfig build errors and warnings. tifm: fix error return code in tifm_7xx1_probe() w1-gpio: Use devm_* functions w1-gpio: Detect of_gpio_error for first gpio uio: Pass pointers to virt_to_page(), not integers uio: fix memory leak misc/at24: avoid infinite loop on write() misc/93xx46: avoid infinite loop on write() misc: atmel_pwm: add deferred-probing support mei: wd: host_init propagate error codes from called functions mei: replace stray pr_debug with dev_dbg mei: bus: propagate error code returned by mei_me_cl_by_id mei: mei_cl_link remove duplicated check for open_handle_count mei: print correct device state during unexpected reset mei: nfc: fix memory leak in error path lkdtm: add tests for additional page permissions lkdtm: adjust recursion size to avoid warnings lkdtm: isolate stack corruption test mei: move host_clients_map cleanup to device init mei: me: downgrade two errors to debug level ...
| * uio: Pass pointers to virt_to_page(), not integersBen Hutchings2013-10-291-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | Most architectures define virt_to_page() as a macro that casts its argument such that an argument of type unsigned long will be accepted without complaint. However, the proper type is void *, and passing unsigned long results in a warning on MIPS. Compile-tested only. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: fix memory leakCong Ding2013-10-291-6/+10
| | | | | | | | | | | | | | | | | | we have to call kobject_put() to clean up the kobject after function kobject_init(), kobject_add(), or kobject_uevent() is called. Signed-off-by: Cong Ding <dinggnu@gmail.com> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: uio_sercos3: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: uio_netx: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: uio_mf624: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: uio_cif: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: uio_aec: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: Simplify uio error path by using devres functionsMichal Simek2013-09-262-36/+14
| | | | | | | | | | | | | | | | | | | | Using devres functions simplify driver error path. - Use devm_kzalloc - Use devm_request_irq Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * drivers: uio: mf624_disable_interrupt() can be staticFengguang Wu2013-09-261-2/+2
| | | | | | | | | | | | Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Rostislav Lisovy <lisovy@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Fix a few incorrectly checked [io_]remap_pfn_range() callsLinus Torvalds2013-10-291-2/+15
|/ | | | | | | | | | | | Nico Golde reports a few straggling uses of [io_]remap_pfn_range() that really should use the vm_iomap_memory() helper. This trivially converts two of them to the helper, and comments about why the third one really needs to continue to use remap_pfn_range(), and adds the missing size check. Reported-by: Nico Golde <nico@ngolde.de> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org.
* Merge tag 'driver-core-3.12-rc1' of ↵Linus Torvalds2013-09-031-9/+13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core patches from Greg KH: "Here's the big driver core pull request for 3.12-rc1. Lots of tiny changes here fixing up the way sysfs attributes are created, to try to make drivers simpler, and fix a whole class race conditions with creations of device attributes after the device was announced to userspace. All the various pieces are acked by the different subsystem maintainers" * tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits) firmware loader: fix pending_fw_head list corruption drivers/base/memory.c: introduce help macro to_memory_block dynamic debug: line queries failing due to uninitialized local variable sysfs: sysfs_create_groups returns a value. debugfs: provide debugfs_create_x64() when disabled rbd: convert bus code to use bus_groups firmware: dcdbas: use binary attribute groups sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled driver core: add #include <linux/sysfs.h> to core files. HID: convert bus code to use dev_groups Input: serio: convert bus code to use drv_groups Input: gameport: convert bus code to use drv_groups driver core: firmware: use __ATTR_RW() driver core: core: use DEVICE_ATTR_RO driver core: bus: use DRIVER_ATTR_WO() driver core: create write-only attribute macros for devices and drivers sysfs: create __ATTR_WO() driver-core: platform: convert bus code to use dev_groups workqueue: convert bus code to use dev_groups MEI: convert bus code to use dev_groups ...
| * UIO: convert class code to use dev_groupsGreg Kroah-Hartman2013-07-241-9/+13
| | | | | | | | | | | | | | | | | | The dev_attrs field of struct class is going away soon, dev_groups should be used instead. This converts the uio class code to use the correct field. Cc: Hans J. Koch <hjk@hansjkoch.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: uio: Kconfig: add MMU dependancy for UIOChen Gang2013-08-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The User space I/O drivers are useful, only when user space meaningful (MMU must be enabled). So need let it depend on MMU, or can not pass compiling, the related error (allmodconfig for H8300): CC [M] drivers/uio/uio.o drivers/uio/uio.c: In function 'uio_mmap_physical': drivers/uio/uio.c:650:2: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] drivers/uio/uio.c:650:20: error: incompatible types when assigning to type 'pgprot_t' from type 'int' Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: uio: Add driver for Humusoft MF624 DAQ PCI cardRostislav Lisovy2013-08-303-0/+261
| | | | | | | | | | Signed-off-by: Rostislav Lisovy <lisovy@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: uio_pdrv_genirq: use dev_get_platdata()Jingoo Han2013-08-301-1/+1
| | | | | | | | | | | | | | | | | | Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: uio_pruss: use dev_get_platdata()Jingoo Han2013-08-301-1/+1
| | | | | | | | | | | | | | | | | | Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: uio_dmem_genirq: use dev_get_platdata()Jingoo Han2013-08-301-1/+1
| | | | | | | | | | | | | | | | | | Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio: uio_pruss: remove unnecessary platform_set_drvdata()Jingoo Han2013-08-271-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio: drop unused vma_count member in uio_device structUwe Kleine-König2013-08-121-16/+0
| | | | | | | | | | | | | | vma_count is used write-only and so fails to be useful. So remove it. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio: provide vm access to UIO_MEM_PHYS mapsUwe Kleine-König2013-08-121-9/+17
| | | | | | | | | | | | | | | | | | | | | | This makes it possible to let gdb access mappings of the process that is being debugged. uio_mmap_logical was moved and uio_vm_ops renamed to group related code and differentiate to new stuff. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio: Remove uio_pdrv and use uio_pdrv_genirq insteadMichal Simek2013-07-263-121/+0
|/ | | | | | | | | | | | | | | The patch "UIO: fix uio_pdrv_genirq with device tree but no interrupt" (sha1: e3a3c3a205554e564751cd9c0276b2af813d7a92) add support to use this driver with no interrupts. uio_pdrv_genirq also supports device-tree binding which is not available in uio_pdrv. That's why this uio_pdrv driver can be just removed. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Vitalii Demianets <vitas@nppfactor.kiev.ua> Reviewed-by: Pavel Machek <pavel@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFTLibin2013-07-031-1/+1
| | | | | | | | | (*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented as a inline funcion vma_pages() in linux/mm.h, so using it. Signed-off-by: Libin <huawei.libin@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers: uio_pdrv_genirq: Use of_match_ptr() macroSachin Kamat2013-06-251-4/+1
| | | | | | | | This eliminates having an #ifdef returning NULL for the case when OF is disabled. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* UIO: Fix concurrency issueVitalii Demianets2013-06-241-5/+13
| | | | | | | | | | | | | | | In a SMP case there was a race condition issue between uio_pdrv_genirq_irqcontrol() running on one CPU and irq handler on another CPU. Fix it by spin_locking shared resources access inside irq handler. Also: - Change disable_irq to disable_irq_nosync to avoid deadlock, because disable_irq waits for the completion of the irq handler; - Change atomic bit-manipulation routines to their non-atomic counterparts as we already are guarding the code by spinlock. Signed-off-by: Vitalii Demianets <vitas@nppfactor.kiev.ua> Reviewed-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers: uio_dmem_genirq: Use of_match_ptr() macroSachin Kamat2013-06-241-3/+1
| | | | | | | | | This eliminates having an #ifdef returning NULL for the case when OF is disabled. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Damian Hobson-Garcia <dhobsong@igel.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* UIO: fix uio_pdrv_genirq with device tree but no interruptPavel Machek2013-06-181-15/+10
| | | | | | | | | | | | | | | | | If device is initialized from device tree, but has no interrupt assigned, uio will still try to request and interrupt old way, fails, and fails registration. This is wrong; don't try initializing irq using platform data if device tree is available. Simplified code based on suggestion by Grant Likely. Fixed memory leak in "irq can not be registered" error path. Signed-off-by: Pavel Machek <pavel@denx.de> Reported-by: Detlev Zundel <dzu@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* UIO: allow binding uio_pdrv_genirq.c to devices using command line optionPavel Machek2013-06-181-2/+6
| | | | | | | | | | This adds ability to bind uio driver to given open firmware device using command line option. Thus, userspace driver can be developed and used without modifying the kernel. Signed-off-by: Pavel Machek <pavel@denx.de> Tested-by: Detlev Zundel <dzu@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* uio: uio_pruss: Fix potential NULL pointer dereferenceEmil Goode2013-06-061-1/+1
| | | | | | | | | In function pruss_probe we free gdev and try to use it on the next line. I have moved the dereference to above the kfree of gdev. Signed-off-by: Emil Goode <emilgoode@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge 3.10-rc3 into char-misc-nextGreg Kroah-Hartman2013-05-271-0/+1
|\ | | | | | | | | | | We want the changes in here. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * uio: UIO_DMEM_GENIRQ should depend on HAS_DMAGeert Uytterhoeven2013-05-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If NO_DMA=y: drivers/built-in.o: In function `uio_dmem_genirq_release': drivers/uio/uio_dmem_genirq.c:95: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `uio_dmem_genirq_open': drivers/uio/uio_dmem_genirq.c:61: undefined reference to `dma_alloc_coherent' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hans J. Koch <hjk@hansjkoch.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio/uio_pci_generic: Use module_pci_driver to register driverPeter Huewe2013-05-211-15/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Removing some boilerplate by using module_pci_driver instead of calling register and unregister in the otherwise empty init/exit functions. It removes a pr_info showing some details about the driver, but these infos can also be retrieved by using modinfo. The name of the pci_driver struct had to be changed in order to prevent a build failure. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio/uio_cif: Use module_pci_driver to register driverPeter Huewe2013-05-211-13/+1
| | | | | | | | | | | | | | | | Removing some boilerplate by using module_pci_driver instead of calling register and unregister in the otherwise empty init/exit functions. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio/uio_netx: Use module_pci_driver to register driverPeter Huewe2013-05-211-13/+1
| | | | | | | | | | | | | | | | Removing some boilerplate by using module_pci_driver instead of calling register and unregister in the otherwise empty init/exit functions. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio/uio_sercos3: Use module_pci_driver to register driverPeter Huewe2013-05-211-13/+1
| | | | | | | | | | | | | | | | Removing some boilerplate by using module_pci_driver instead of calling register and unregister in the otherwise empty init/exit functions. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | uio/uio_aec: Use module_pci_driver to register driverPeter Huewe2013-05-211-13/+1
|/ | | | | | | | Removing some boilerplate by using module_pci_driver instead of calling register and unregister in the otherwise empty init/exit functions. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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