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* scsi: disable automatic target scanHannes Reinecke2016-04-1112-28/+60
| | | | | | | | | | | | | | | | | On larger installations it is useful to disable automatic LUN scanning, and only add the required LUNs via udev rules. This can speed up bootup dramatically. This patch introduces a new scan module parameter value 'manual', which works like 'none', but can be overridden by setting the 'rescan' value from scsi_scan_target to 'SCSI_SCAN_MANUAL'. And it updates all relevant callers to set the 'rescan' value to 'SCSI_SCAN_MANUAL' if invoked via the 'scan' option in sysfs. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Tested-by: Laurence Oberman <loberman@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Call complete_cmd() for disconnected commands on bus resetFinn Thain2016-04-111-1/+1
| | | | | | | | | | | | | | | I'm told that some targets are liable to disconnect a REQUEST SENSE command. Theoretically this would cause a command undergoing autosense to be moved onto the disconnected list. The bus reset handler must call complete_cmd() for these commands, otherwise the hostdata->sensing pointer will not get cleared. That would cause autosense processing to stall and a timeout or an incorrect scsi_eh_restore_cmnd() would eventually follow. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reported-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mac_scsi: Fix pseudo DMA implementationFinn Thain2016-04-112-95/+119
| | | | | | | | | | | | | | | Fix various issues: Comments about bus errors are incorrect. The PDMA asm must return the size of the memory access that faulted so the transfer count can be adjusted accordingly. A phase change may cause a bus error but should not be treated as failure. A bus error does not always imply a phase change and generally the transfer may continue. Scatter/gather doesn't seem to work with PDMA due to overruns. This is a pity because peak throughput seems to double with SG_ALL. Tested on a Mac LC III and a PowerBook 520. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* atari_scsi: Allow can_queue to be increased for FalconFinn Thain2016-04-111-61/+22
| | | | | | | | | | | | | | The benefit of limiting can_queue to 1 is that atari_scsi shares the ST DMA chip more fairly with other drivers (e.g. falcon-ide). Unfortunately, this can limit SCSI bus utilization. On systems without IDE, atari_scsi should issue SCSI commands whenever it can arbitrate for the bus. Make that possible by making can_queue configurable. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* atari_scsi: Set a reasonable default for cmd_per_lunFinn Thain2016-04-111-2/+1
| | | | | | | | | This setting does not need to be conditional on Atari ST or TT. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Update usage documentationFinn Thain2016-04-113-48/+16
| | | | | | | | | Update kernel parameter documentation for atari_scsi, mac_scsi and g_NCR5380 drivers. Remove duplication. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove DONT_USE_INTR and AUTOPROBE_IRQ macrosFinn Thain2016-04-118-32/+4
| | | | | | | | Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove remaining register storage qualifiersFinn Thain2016-04-111-3/+3
| | | | | | | | Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Fix register decoding for debuggingFinn Thain2016-04-111-17/+25
| | | | | | | | | | | | Decode all bits in the chip registers. They are all useful at times. Fix printk severity so that this output can be suppressed along with the other debugging output. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* dmx3191d: Drop max_sectors limitFinn Thain2016-04-111-1/+0
| | | | | | | | | | The dmx3191d driver is not capable of DMA or PDMA so all transfers use PIO. Now that large slow PIO transfers periodically stop and call cond_resched(), the max_sectors limit can go away. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Reduce max_lun limitFinn Thain2016-04-111-0/+2
| | | | | | | | | | | | The driver has a limit of eight LUs because of the byte-sized bitfield that is used for busy flags. That means the maximum LUN is 7. The default is 8. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove disused atari_NCR5380.c core driverFinn Thain2016-04-116-2699/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that atari_scsi and sun3_scsi have been converted to use the NCR5380.c core driver, remove atari_NCR5380.c. Also remove the last vestiges of its Tagged Command Queueing implementation from the wrapper drivers. The TCQ support in atari_NCR5380.c is abandoned by this patch. It is not merged into the remaining core driver because, 1) atari_scsi defines SUPPORT_TAGS but leaves FLAG_TAGGED_QUEUING disabled by default, which indicates that it is mostly undesirable. 2) I'm told that it doesn't work correctly when enabled. 3) The algorithm does not make use of block layer tags which it will have to do because scmd->tag is deprecated. 4) sun3_scsi doesn't define SUPPORT_TAGS at all, yet the the SUPPORT_TAGS macro interacts with the CONFIG_SUN3 macro in 'interesting' ways. 5) Compile-time configuration with macros like SUPPORT_TAGS caused the configuration space to explode, leading to untestable and unmaintainable code that is too hard to reason about. The merge_contiguous_buffers() code is also abandoned. This was unused by sun3_scsi. Only atari_scsi used it and then only on TT, because only TT supports scatter/gather. I suspect that the TT would work fine with ENABLE_CLUSTERING instead. If someone can benchmark the difference then perhaps the merge_contiguous_buffers() code can be be justified. Until then we are better off without the extra complexity. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* sun3_scsi: Adopt NCR5380.c core driverFinn Thain2016-04-112-15/+124
| | | | | | | | | | | Add support for the custom Sun 3 DMA logic to the NCR5380.c core driver. This code is copied from atari_NCR5380.c. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* atari_scsi: Adopt NCR5380.c core driverFinn Thain2016-04-112-3/+35
| | | | | | | | | | | Add support for the Atari ST DMA chip to the NCR5380.c core driver. This code is copied from atari_NCR5380.c. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Merge DMA implementation from atari_NCR5380 core driverFinn Thain2016-04-1113-40/+152
| | | | | | | | | | | | Adopt the DMA implementation from atari_NCR5380.c. This means that atari_scsi and sun3_scsi can make use of the NCR5380.c core driver and the atari_NCR5380.c driver fork can be made redundant. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Adopt uniform DMA setup conventionFinn Thain2016-04-114-18/+20
| | | | | | | | | | | | | | | | | | | | | | | Standardize the DMA setup hooks so that the DMA implementation in atari_NCR5380.c can be reconciled with pseudo DMA implementation in NCR5380.c. Calls to NCR5380_dma_recv_setup() and NCR5380_dma_send_setup() return a negative value on failure, zero on PDMA transfer success and a positive byte count for DMA setup success. This convention is not entirely new, but is now applied consistently. Also remove a pointless Status Register access: the *phase assignment is redundant because after NCR5380_transfer_dma() returns control to NCR5380_information_transfer(), that routine then returns control to NCR5380_main(), which means *phase is dead. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Use DMA hooks for PDMAFinn Thain2016-04-1113-41/+50
| | | | | | | | | | | | | | | | | Those wrapper drivers which use DMA define the REAL_DMA macro and those which use pseudo DMA define PSEUDO_DMA. These macros need to be removed for a number of reasons, not least of which is to have drivers share more code. Redefine the PDMA send and receive hooks as DMA setup hooks, so that the DMA code can be shared by all 5380 wrapper drivers. This will help to reunify the forked core driver. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove BOARD_REQUIRES_NO_DELAY macroFinn Thain2016-04-114-10/+14
| | | | | | | | | | | | | | | The io_recovery_delay macro is intended to insert a microsecond delay between the chip register accesses that begin a DMA operation. This is reportedly needed for some ISA boards. Reverse the sense of the macro test so that in the common case, where no delay is required, drivers need not define the macro. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove PSEUDO_DMA macroFinn Thain2016-04-1114-78/+6
| | | | | | | | | | | | | | For those wrapper drivers which only implement Programmed IO, have NCR5380_dma_xfer_len() evaluate to zero. That allows PDMA to be easily disabled at run-time and so the PSEUDO_DMA macro is no longer needed. Also remove the spin counters used for debugging pseudo DMA drivers. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Disable the DMA errata workaround flag by defaultFinn Thain2016-04-118-20/+14
| | | | | | | | | | | | | | | | | The only chip that needs the workarounds enabled is an early NMOS device. That means that the common case is to disable them. Unfortunately the sense of the flag is such that it has to be set for the common case. Rename the flag so that zero can be used to mean "no errata workarounds needed". This simplifies the code. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* atari_NCR5380: Remove DMA_MIN_SIZE macroFinn Thain2016-04-113-19/+22
| | | | | | | | | | | | | Only the atari_scsi and sun3_scsi drivers define DMA_MIN_SIZE. Both drivers also define NCR5380_dma_xfer_len, which means DMA_MIN_SIZE can be removed from the core driver. This removes another discrepancy between the two core drivers. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove REAL_DMA and REAL_DMA_POLL macrosFinn Thain2016-04-115-415/+22
| | | | | | | | | | | | | | | For the NCR5380.c core driver, these macros are never used. If REAL_DMA were to be defined, compilation would fail. For the atari_NCR5380.c core driver, REAL_DMA is always defined. Hence these macros are pointless. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ncr5380: Remove FLAG_NO_PSEUDO_DMA where possibleFinn Thain2016-04-115-6/+23
| | | | | | | | | | | | | | | Drivers that define PSEUDO_DMA also define NCR5380_dma_xfer_len. The core driver must call NCR5380_dma_xfer_len which means FLAG_NO_PSEUDO_DMA can be eradicated from the core driver. dmx3191d doesn't define PSEUDO_DMA and has no use for FLAG_NO_PSEUDO_DMA, so remove it there also. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* g_ncr5380: Remove CONFIG_SCSI_GENERIC_NCR53C400Finn Thain2016-04-113-77/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change brings a number of improvements: fewer macros, better test coverage, simpler code and sane Kconfig options. The downside is a small chance of incompatibility (which seems unavoidable). CONFIG_SCSI_GENERIC_NCR53C400 exists to enable or inhibit pseudo DMA transfers when the driver is used with 53C400-compatible cards. Thanks to Ondrej Zary's patches, PDMA now works which means it can be enabled unconditionally. Due to bad design, CONFIG_SCSI_GENERIC_NCR53C400 ties together unrelated functionality as it sets both PSEUDO_DMA and BIOSPARAM macros. This patch effectively enables PSEUDO_DMA and disables BIOSPARAM. The defconfigs and the Kconfig default leave CONFIG_SCSI_GENERIC_NCR53C400 undefined. Red Hat 9 and CentOS 2.1 were the same. This leaves both PSEUDO_DMA and BIOSPARAM disabled. The effect of this patch should be better performance from enabling PSEUDO_DMA. On the other hand, Debian 4 and SLES 10 had CONFIG_SCSI_GENERIC_NCR53C400 enabled, so both PSEUDO_DMA and BIOSPARAM were enabled. This patch might affect configurations like this by disabling BIOSPARAM. My best guess is that this could be a problem only in the vanishingly rare case that 1) the CHS values stored in the boot device partition table are wrong and 2) a 5380 card is in use (because PDMA on 53C400 used to be broken). Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: reduce CONFIG_SCSI_CONSTANTS=y impact by 8kRasmus Villemoes2016-04-112-7/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | On 64 bit, struct error_info has 6 bytes of padding, which amounts to over 4k of wasted space in the additional[] array. We could easily get rid of that by instead using separate arrays for the codes and the pointers. However, we can do even better than that and save an additional 6 bytes per entry: In the table, just store the sizeof() the corresponding string literal. The cumulative sum of these is then the appropriate offset into additional_text, which is built from the concatenation (with '\0's inbetween) of the strings. $ scripts/bloat-o-meter /tmp/vmlinux vmlinux add/remove: 0/0 grow/shrink: 1/1 up/down: 24/-8488 (-8464) function old new delta scsi_extd_sense_format 136 160 +24 additional 11312 2824 -8488 The Kconfig help text used to say that CONFIG_SCSI_CONSTANTS=y costs around 75 KB, but that was a little exaggerated. The actual number was closer to 44K, and 36K with this patch. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Douglas Gilbert <dgilbert@interlog.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: move Additional Sense Codes to separate fileRasmus Villemoes2016-04-112-827/+829
| | | | | | | | | | | This is a purely mechanical move of the list of additional sense codes to a separate file, in preparation for reducing the impact of choosing CONFIG_SCSI_CONSTANTS=y by about 8k. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: make some Additional Sense strings more grep'ableRasmus Villemoes2016-04-111-18/+9
| | | | | | | | | There's little point in breaking these strings over multiple lines. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2016-04-1110-73/+164
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid Pull HID fixes from Jiri Kosina: - fix for how scaling linearization is computed in wiimote driver, by Cyan Ogilvie - endless retry loop fix in generic USB HID core reset-resume handling, by Alan Stern - two functional fixes affecting particular devices, and oops fix for wacom driver, by Jason Gerecke - multitouch slot numbering fix from Gabriele Mazzotta - a couple more small fixes on top * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: wacom: Support switching from vendor-defined device mode on G9 and G11 HID: wacom: Initialize hid_data.inputmode to -1 HID: microsoft: add support for 3 more devices HID: multitouch: Synchronize MT frame on reset_resume HID: wacom: fix Bamboo ONE oops HID: lenovo: Don't use stack variables for DMA buffers HID: usbhid: fix inconsistent reset/resume/reset-resume behavior HID: wiimote: Fix wiimote mp scale linearization
| * HID: wacom: Support switching from vendor-defined device mode on G9 and G11Jason Gerecke2016-04-052-28/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A tablet PC booted into Windows may have its pen/touch hardware switched into "Wacom mode" similar to what we do with explicitly-supported hardware. Some devices appear to maintain this state across reboots, preventing their use with the generic HID driver. This patch adds support for detecting the presence of the mode switch feature report used by devices based on the G9 and G11 chips and has the HID codepath always attempt to reset the device back to sending standard HID reports. Fixes: https://sourceforge.net/p/linuxwacom/bugs/307/ Fixes: https://sourceforge.net/p/linuxwacom/bugs/310/ Fixes: https://github.com/linuxwacom/input-wacom/issues/15 Co-authored-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: wacom: Initialize hid_data.inputmode to -1Jason Gerecke2016-04-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | Commit 5ae6e89 introduced hid_data.inputmode with a comment that it would have the value -1 if undefined, but then forgot to actually perform the initialization. Although this doesn't appear to have caused any problems in practice, it should still be remedied. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: microsoft: add support for 3 more devicesAlistair Leslie-Hughes2016-04-043-0/+12
| | | | | | | | | | | | | | | | | | | | | | Adds support for the Micrsift Digital 4K, Media 600 and Media 3000 V1 Keyboards, which have the same quirks as the already existing hardware MS_NE4K. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=52841 [jkosina@suse.cz: rephrase changelog] Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: multitouch: Synchronize MT frame on reset_resumeGabriele Mazzotta2016-04-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | input_mt_get_slot_by_key() requires input_mt_sync_frame() to be called at each frame. Do it when releasing the touches, or else we won't get a proper slot number after mt_reset_resume(). Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com> Reviewed-by: Benson Leung <bleung@chromium.org> Reviewed-by: Benjamin TIssoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: wacom: fix Bamboo ONE oopsBenjamin Tissoires2016-03-291-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Looks like recent changes in the Wacom driver made the Bamboo ONE crashes. The tablet behaves as if it was a regular Bamboo device with pen, touch and pad, but there is no physical pad connected to it. The weird part is that the pad is still sending events and given that there is no input node connected to it, we get anull pointer exception. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1317116 Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Cc: stable@vger.kernel.org Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: lenovo: Don't use stack variables for DMA buffersJosh Boyer2016-03-291-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lenovo_send_cmd_cptkbd function uses a stack variable to submit commands via hid_hw_raw_request. Eventually this gets to the usb_hcd_map_urb_for_dma function, which causes a warning to be thrown if the CONFIG_DMA_API_DEBUG option is enabled. Fix this by allocating a temporary buffer instead. [jkosina@suse.cz: no need to NULL-initialize buf, spotted by Benjamin] Reported-by: lejeczek <peljasz@yahoo.co.uk> Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: usbhid: fix inconsistent reset/resume/reset-resume behaviorAlan Stern2016-03-241-36/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The usbhid driver has inconsistently duplicated code in its post-reset, resume, and reset-resume pathways. reset-resume doesn't check HID_STARTED before trying to restart the I/O queues. resume fails to clear the HID_SUSPENDED flag if HID_STARTED isn't set. resume calls usbhid_restart_queues() with usbhid->lock held and the others call it without holding the lock. The first item in particular causes a problem following a reset-resume if the driver hasn't started up its I/O. URB submission fails because usbhid->urbin is NULL, and this triggers an unending reset-retry loop. This patch fixes the problem by creating a new subroutine, hid_restart_io(), to carry out all the common activities. It also adds some checks that were missing in the original code: After a reset, there's no need to clear any halted endpoints. After a resume, if a reset is pending there's no need to restart any I/O until the reset is finished. After a resume, if the interrupt-IN endpoint is halted there's no need to submit the input URB until the halt has been cleared. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Daniel Fraga <fragabr@gmail.com> Tested-by: Daniel Fraga <fragabr@gmail.com> CC: <stable@vger.kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * HID: wiimote: Fix wiimote mp scale linearizationCyan Ogilvie2016-03-181-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The wiimote motion plus gyros use two scales to report fast and slow rotation - below 440 deg/s uses 8192/440 units / deg/s, and above uses 8192/2000 units / deg/s. Previously this driver attempted to linearize the two by scaling the fast rate by 18 and the slow by 9, but this results in a scale of 8192*9/440 = ~167.564 for slow and 8192*18/2000 = 73.728 for fast. Correct the fast motion scale factor so that both report ~167.564 units / deg/s Signed-off-by: Cyan Ogilvie <cyan.ogilvie@gmail.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | Merge branch 'for-linus' of ↵Linus Torvalds2016-04-1115-85/+77
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull m68k update from Geert Uytterhoeven. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k/defconfig: Update defconfigs for v4.6-rc2 m68k: Wire up preadv2 and pwritev2
| * | m68k/defconfig: Update defconfigs for v4.6-rc2Geert Uytterhoeven2016-04-0712-84/+72
| | | | | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
| * | m68k: Wire up preadv2 and pwritev2Geert Uytterhoeven2016-04-073-1/+5
| | | | | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
* | | Merge tag 'arc-4.6-rc4-fixes' of ↵Linus Torvalds2016-04-115-9/+21
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: - fix Kconfig splat due to pcie rework - make ethernet work again on axs103 - provide fb_pgprotect() for future video driver integration * tag 'arc-4.6-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: [plat-axs103] Enable loop block devices Revert "ARC: [plat-axs10x] add Ethernet PHY description in .dts" arc: Add our own implementation of fb_pgprotect() ARC: Don't source drivers/pci/pcie/Kconfig ourselves
| * | | ARC: [plat-axs103] Enable loop block devicesAlexey Brodkin2016-04-072-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As mentioned in LTP's README.ARC: ------------->8------------ Requirements for the environment * Linux must be built with support of loop block devices. Thus it's necessary to enable these Linux kernel options: CONFIG_BLK_DEV CONFIG_BLK_DEV_LOOP ------------->8------------ enabling loop block devices. That among other things lead to additional 10 fatal signals appearing during LTP run. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | Revert "ARC: [plat-axs10x] add Ethernet PHY description in .dts"Vineet Gupta2016-04-071-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 667a490bdb6e27db0887d2ca515b907d6aa87118. This is needed to get ethernet(stmmac) working in 4.6-rc2 on axs103. 4.5 needed this fix, but apprently stmmac has gained some fixes which warrant reversal of this. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | arc: Add our own implementation of fb_pgprotect()Alexey Brodkin2016-04-071-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During mmaping of frame-buffer pages to user-space fb_protect() is called to set proper page settings. In case of ARC we need to mark pages that are mmaped to user as uncached because of 2 reasons: * Huge amount of data if passing through data cache will thrash cache a lot making cache almost useless for other less traffic hungry processes. * Data written by user in FB will be immediately available for hardware (such as PGU etc) without requirements to flush data cache regularly. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: linux-snps-arc@lists.infradead.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | ARC: Don't source drivers/pci/pcie/Kconfig ourselvesAndreas Ziegler2016-04-071-1/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5f8fc43217a0 ("PCI: Include pci/pcie/Kconfig directly from pci/Kconfig") in linux-next changed drivers/pci/Kconfig to include drivers/pci/pcie/Kconfig itself, so that architectures do not need to source both files themselves. ARC just recently gained PCI support through commit 6b3fb77998dd ("ARC: Add PCI support"), but this change was based on the old behaviour of the Kconfig files. This makes Kconfig now spit out the following warnings: drivers/pci/pcie/Kconfig:61:warning: choice value used outside its choice group drivers/pci/pcie/Kconfig:67:warning: choice value used outside its choice group drivers/pci/pcie/Kconfig:74:warning: choice value used outside its choice group This change updates the Kconfig file for ARC, dropping the now unnecessary 'source' statement, which makes the warning disappear. Signed-off-by: Andreas Ziegler <andreas.ziegler@fau.de> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | | Linux 4.6-rc3v4.6-rc3Linus Torvalds2016-04-101-1/+1
| | |
* | | Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds2016-04-105-7/+13
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM fixes from Russell King: "A couple of small fixes, and wiring up the new syscalls which appeared during the merge window" * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: 8550/1: protect idiv patching against undefined gcc behavior ARM: wire up preadv2 and pwritev2 syscalls ARM: SMP enable of cache maintanence broadcast
| * | | ARM: 8550/1: protect idiv patching against undefined gcc behaviorNicolas Pitre2016-04-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was reported that a kernel with CONFIG_ARM_PATCH_IDIV=y stopped booting when compiled with the upcoming gcc 6. Turns out that turning a function address into a writable array is undefined and gcc 6 decided it was OK to omit the store to the first word of the function while still preserving the store to the second word. Even though gcc 6 is now fixed to behave more coherently, it is a mystery that gcc 4 and gcc 5 actually produce wanted code in the kernel. And in fact the reduced test case to illustrate the issue does indeed break with gcc < 6 as well. In any case, let's guard the kernel against undefined compiler behavior by hiding the nature of the array location as suggested by gcc developers. Reference: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70128 Signed-off-by: Nicolas Pitre <nico@linaro.org> Reported-by: Marcin Juszkiewicz <mjuszkiewicz@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: stable@vger.kernel.org # v4.5 Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | ARM: wire up preadv2 and pwritev2 syscallsRussell King2016-04-073-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | Wire up the preadv2 and pwritev2 syscalls for ARM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | ARM: SMP enable of cache maintanence broadcastRussell King2016-04-011-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Masahiro Yamada reports that we can fail to set the FW bit in the auxiliary control register, which enables broadcasting the cache maintanence operations. This occurs because we only check that the SMP/nAMP bit is set, rather than checking whether all the bits we want to be set are set. Rearrange the code to ensure that all desired bits are set, and only update the register if we discover some required bits are not set. Tested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* | | | Merge tag 'mmc-v4.6-rc1' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds2016-04-105-9/+84
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MMC fixes from Ulf Hansson: "Here are a couple of mmc fixes intended for v4.6 rc3: MMC host: - sdhci: Fix regression setting power on Trats2 board - sdhci-pci: Add support and PCI IDs for more Broxton host controllers" * tag 'mmc-v4.6-rc1' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: sdhci-pci: Add support and PCI IDs for more Broxton host controllers mmc: sdhci: Fix regression setting power on Trats2 board
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