linux/drivers/ata, branch v4.7

Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

2016-07-23T02:46:59Z

Pull libata fix from Tejun Heo: "Another fallout from max_sectors bump a couple years ago. The lite-on optical drive times out on large requests" * 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: libata: LITE-ON CX1-JB256-HP needs lower max_sectors

libata: LITE-ON CX1-JB256-HP needs lower max_sectors

2016-07-18T22:40:00Z

Since 34b48db66e08 ("block: remove artifical max_hw_sectors cap"), max_sectors is no longer limited to BLK_DEF_MAX_SECTORS and LITE-ON CX1-JB256-HP keeps timing out with higher max_sectors. Revert it to the previous value. Signed-off-by: Tejun Heo Reported-by: dgerasimov@gmail.com Link: https://bugzilla.kernel.org/show_bug.cgi?id=121671 Cc: stable@vger.kernel.org # v3.19+ Fixes: 34b48db66e08 ("block: remove artifical max_hw_sectors cap") Signed-off-by: Tejun Heo

Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

2016-06-28T19:11:31Z

Pull libata fixes from Tejun Heo: "Two trivial fixes - one for a bug in the allocation failure path and the other a compiler warning fix" * 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ata: sata_mv: fix mis-conversion in mv_write_cached_reg() ata: fix return value check in ahci_seattle_get_port_info()

Merge remote-tracking branch 'mkp-scsi/4.7/scsi-fixes' into fixes

2016-06-18T18:59:01Z

ata: sata_mv: fix mis-conversion in mv_write_cached_reg()

2016-06-17T16:15:17Z

Fix the signed issue in mv_write_cached_reg() where the laddr is assigned from a (long)addr instead of (unsigned long)addr. Fixes the following warnings: drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression Signed-off-by: Ben Dooks Signed-off-by: Tejun Heo

ata: fix return value check in ahci_seattle_get_port_info()

2016-06-15T18:26:41Z

In case of error, the function devm_kzalloc() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun Acked-by: Brijesh Singh Signed-off-by: Tejun Heo

scsi: fix race between simultaneous decrements of ->host_failed

2016-06-09T03:08:04Z

sas_ata_strategy_handler() adds the works of the ata error handler to system_unbound_wq. This workqueue asynchronously runs work items, so the ata error handler will be performed concurrently on different CPUs. In this case, ->host_failed will be decreased simultaneously in scsi_eh_finish_cmd() on different CPUs, and become abnormal. It will lead to permanently inequality between ->host_failed and ->host_busy, and scsi error handler thread won't start running. IO errors after that won't be handled. Since all scmds must have been handled in the strategy handler, just remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after the strategy handler to fix this race. Fixes: 50824d6c5657 ("[SCSI] libsas: async ata-eh") Cc: stable@vger.kernel.org Signed-off-by: Wei Fang Reviewed-by: James Bottomley Signed-off-by: Martin K. Petersen

remove lots of IS_ERR_VALUE abuses

2016-05-27T22:26:11Z

Most users of IS_ERR_VALUE() in the kernel are wrong, as they pass an 'int' into a function that takes an 'unsigned long' argument. This happens to work because the type is sign-extended on 64-bit architectures before it gets converted into an unsigned type. However, anything that passes an 'unsigned short' or 'unsigned int' argument into IS_ERR_VALUE() is guaranteed to be broken, as are 8-bit integers and types that are wider than 'unsigned long'. Andrzej Hajda has already fixed a lot of the worst abusers that were causing actual bugs, but it would be nice to prevent any users that are not passing 'unsigned long' arguments. This patch changes all users of IS_ERR_VALUE() that I could find on 32-bit ARM randconfig builds and x86 allmodconfig. For the moment, this doesn't change the definition of IS_ERR_VALUE() because there are probably still architecture specific users elsewhere. Almost all the warnings I got are for files that are better off using 'if (err)' or 'if (err < 0)'. The only legitimate user I could find that we get a warning for is the (32-bit only) freescale fman driver, so I did not remove the IS_ERR_VALUE() there but changed the type to 'unsigned long'. For 9pfs, I just worked around one user whose calling conventions are so obscure that I did not dare change the behavior. I was using this definition for testing: #define IS_ERR_VALUE(x) ((unsigned long*)NULL == (typeof (x)*)NULL && \ unlikely((unsigned long long)(x) >= (unsigned long long)(typeof(x))-MAX_ERRNO)) which ends up making all 16-bit or wider types work correctly with the most plausible interpretation of what IS_ERR_VALUE() was supposed to return according to its users, but also causes a compile-time warning for any users that do not pass an 'unsigned long' argument. I suggested this approach earlier this year, but back then we ended up deciding to just fix the users that are obviously broken. After the initial warning that caused me to get involved in the discussion (fs/gfs2/dir.c) showed up again in the mainline kernel, Linus asked me to send the whole thing again. [ Updated the 9p parts as per Al Viro - Linus ] Signed-off-by: Arnd Bergmann Cc: Andrzej Hajda Cc: Andrew Morton Link: https://lkml.org/lkml/2016/1/7/363 Link: https://lkml.org/lkml/2016/5/27/486 Acked-by: Srinivas Kandagatla # For nvmem part Signed-off-by: Linus Torvalds

Merge branch 'for-4.7-dw' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

2016-05-24T01:19:21Z

Pull libata sata_dwc_460ex updates from Tejun Heo: "Patches to bring sata_dwc_460ex up to snuff. It was a separate pull request because it depends on dmaengine dw platform changes which are now in mainline" * 'for-4.7-dw' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (24 commits) ata: dwc: add DMADEVICES dependency powerpc/4xx: Device tree update for the 460ex DWC SATA ata: sata_dwc_460ex: make debug messages neat ata: sata_dwc_460ex: supply physical address of FIFO to DMA ata: sata_dwc_460ex: use devm_ioremap ata: sata_dwc_460ex: tidy up sata_dwc_clear_dmacr() ata: sata_dwc_460ex: use readl/writel_relaxed() ata: sata_dwc_460ex: switch to new dmaengine_terminate_* API ata: sata_dwc_460ex: add __iomem to register base pointer ata: sata_dwc_460ex: get rid of incorrect cast ata: sata_dwc_460ex: get rid of some pointless casts ata: sata_dwc_460ex: remove empty libata callback ata: sata_dwc_460ex: correct HOSTDEV{P}_FROM_*() macros ata: sata_dwc_460ex: get rid of global data ata: sata_dwc_460ex: add phy support ata: sata_dwc_460ex: use "dmas" DT property to find dma channel ata: sata_dwc_460ex: don't call ata_sff_qc_issue() on DMA commands ata: sata_dwc_460ex: skip dma setup for non-dma commands ata: sata_dwc_460ex: select only core part of DMA driver ata: sata_dwc_460ex: DMA is always a flow controller ...

Merge branch 'for-4.7-zac' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

2016-05-24T00:53:39Z

Pull libata ZAC support from Tejun Heo: "This contains Zone ATA Command support for Shingled Magnetic Recording devices. In addition to sending the new commands down to the device, as ZAC commands depend on getting a lot of responses from the device, piping up responses is beefed up too. However, it doesn't involve changes to libata core mechanism or its interaction with upper layers, so I'm not expecting too many fallouts. Kudos to Hannes for driving SMR support" * 'for-4.7-zac' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (28 commits) libata: support host-aware and host-managed ZAC devices libata: support device-managed ZAC devices libata: NCQ encapsulation for ZAC MANAGEMENT OUT libata: Implement ZBC OUT translation libata: implement ZBC IN translation libata: fixup ZAC device disabling libata-scsi: Generate sense code for disabled devices libata-trace: decode subcommands libata: Check log page directory before accessing pages libata: Add command definitions for NCQ Encapsulation for READ LOG DMA EXT libata: Separate out ata_dev_config_ncq_send_recv() libata/libsas: Define ATA_CMD_NCQ_NON_DATA libsas: enable FPDMA SEND/RECEIVE libata: do not attempt to retrieve sense code twice libata-scsi: Set information sense field for invalid parameter libata-scsi: set bit pointer for sense code information libata-scsi: Set field pointer in sense code scsi: add scsi_set_sense_field_pointer() libata: Implement control mode page to select sense format libata-scsi: generate correct ATA pass-through sense ...