- 17 Jan, 2018 5 commits
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Andy Shevchenko authored
Numbers up to 100 snprintf() prints without using a division. Besides that the code looks more readable. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Colin Ian King authored
The function _get_st_from_smid is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol '_get_st_from_smid' was not declared. Should it be static? Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Wei Yongjun authored
Fixes the following sparse warning: drivers/scsi/hisi_sas/hisi_sas_main.c:1691:25: warning: symbol 'host_attrs' was not declared. Should it be static? Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Acked-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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Douglas Gilbert authored
Introduce a state enum into sdebug_defer objects to indicate which, if any, defer method has been used with the associated command. Also add 2 bools to indicate which of the defer methods has been initialized. Those objects are re-used but the initialization only needs to be done once. This simplifies command cancellation handling. Now the delay associated with a deferred response of a command cannot be changed (once started) by changing the delay (and ndelay) parameters in sysfs. Command aborts and driver shutdown are still honoured immediately when received. [mkp: applied by hand] Signed-off-by:
Douglas Gilbert <dgilbert@interlog.com> Reviewed-by:
Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by:
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Rasmus Villemoes authored
This saves a little .text and gets rid of the unmotivated line break and the sizeof(...) style inconsistency. Signed-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by:
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- 11 Jan, 2018 35 commits
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Shivasharan S authored
Signed-off-by:
Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by:
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Shivasharan S authored
No functional changes. This patch is a re-work of DCMD refire code to better manage all the different cases to decide whether to REFIRE or SKIP or COMPLETE certain DCMD. Signed-off-by:
Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by:
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Shivasharan S authored
Expose FW outstanding commands (fw_outstanding) through sysfs interface. This helps in debugging certain performance issues in the field. Signed-off-by:
Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Signed-off-by:
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Shivasharan S authored
Performance improvement: Current driver calls stream detection unconditionally for all IOs. Stream Detection logic is not required for most of the fast path IO. To improve performance, avoid stream detection logic and do it only if required. Below are the cases where stream detection is required in driver: 1. All non-FastPath IOs (IOs going to FW) 2. Fast Path reads sent to ReadAhead capable VDs. Signed-off-by:
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Shivasharan S authored
Issue – There may be some IO accessing incorrect raid map, but driver has checks in IO path to handle those cases. It is always better to move to new raid map only once raid map is populated and validated. No functional defect. Fix is provided as part of review. Fix – Update instance->map_id after driver has populated new driver raid map from firmware raid map. Signed-off-by:
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Shivasharan S authored
scsi: megaraid_sas: Use megasas_wait_for_adapter_operational to detect controller state in IOCTL path In IOCTL path, re-use megasas_wait_for_adapter_operational API to detect controller state. This will make driver to use this API uniformly in all cases where we need to wait for adapter to become operational. Signed-off-by:
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Shivasharan S authored
Driver needs to avoid PCI writes while OCR is in progress. Use reset_mutex to synchronize between firing DCMDs MR_DCMD_PD_GET_INFO and MR_DCMD_DRV_GET_TARGET_PROP while OCR is triggered. Without this fix, if Device/VD add/creation is in progress and at the same time MR Firmware is going through OCR, user may see OCR never completed and it may need system reboot. This scenario is rare to occur. Fix is provided as part of review. Signed-off-by:
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Shivasharan S authored
Issue - Driver returns DID_NO_CONNECT when unload is in progress, indicated using instance->unload flag. In case of dynamic unload of driver, this flag is set before calling scsi_remove_host(). While doing manual driver unload, user will see lots of prints for Sync Cache command with DID_NO_CONNECT status. Fix - Set the instance->unload flag after scsi_remove_host(). Allow device removal process to be completed and do not block any command before that. SCSI commands (like SYNC_CACHE) are received (as part of scsi_remove_host) by driver during unload will be submitted further down to the drives. Signed-off-by:
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Shivasharan S authored
Currently driver does not validate ldcount provided by firmware. If the value is invalid, fail RAID map validation accordingly. This issue is rare to hit in field and is fixed as part of code review. Signed-off-by:
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Shivasharan S authored
Signed-off-by:
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Shivasharan S authored
In megasas_get_seq_num, the status of the DCMD fired to FW is not returned, it always returns success. We could end up registering AEN request with incorrect sequence number if the DCMD failed. Return the DCMD status back to caller. This was discovered during code review and very rare to see issue in field to see AEN request failed bt FW. Signed-off-by:
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Shivasharan S authored
Commit b9637d14 ("scsi: megaraid_sas: Resize MFA frame used for IOC INIT to 4k") increased the size of IOC INIT frame to 4k. Need to use updated size when memsetting init_frame. Signed-off-by:
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Shivasharan S authored
Memory allocated for IOC_INIT command and stream detection array are not zero'd before using. Use kzalloc instead of kmalloc to zero out the memory allocated. Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality but makes the SCSI core source code slightly easier to read. Signed-off-by:
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Raghava Aditya Renukunta authored
The delay for the rescan worker needs to 10 seconds, missed the HZ in there. Fixes: a1367e4a (scsi: aacraid: Reschedule host scan in case of failure) Signed-off-by:
Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by:
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Raghava Aditya Renukunta authored
The correct lun count needs to be divided by 24, missed it in the previous patch set. Fixes: 4b000227 (scsi: aacraid: Create helper functions to get lun info) Signed-off-by:
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Hannes Reinecke authored
For hardware only supporting active/optimized there's no point in ever re-issuing RTPG as the only new state we can possibly read is active/optimized. This avoid spurious errors during path failover on such arrays. Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
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Colin Ian King authored
Use the ARRAY_SIZE macro on array __pciids to determine size of the array. Improvement suggested by coccinelle. Signed-off-by:
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Colin Ian King authored
The initialization of d is redundant as this value is never read and it is overwritten inside the subsequent for-loop. Remove this redundant assignment. Cleans up clang warning: drivers/scsi/qla2xxx/qla_gs.c:3985:29: warning: Value stored to 'd' during its initialization is never read Signed-off-by:
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Himanshu Jha authored
Use dma_zalloc_coherent instead of dma_alloc_coherent followed by memset 0. Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci Suggested-by:
Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by:
Himanshu Jha <himanshujha199640@gmail.com> Acked-by:
Manish Rangankar <Manish.Rangankar@cavium.com> Signed-off-by:
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Himanshu Jha authored
Use dma_zalloc_coherent instead of dma_alloc_coherent followed by memset 0. Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci Suggested-by:
Chad Dupuis <chad.dupuis@cavium.com> Signed-off-by:
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chenxiang authored
According to ATA protocol, SET MAX commands belong to different frame types. So judge features field of SET MAX commands to decide which frame type they belongs to. Signed-off-by:
Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by:
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chenxiang authored
There are two other values for SET MAX feature field according to ata protocol. So definite them. Signed-off-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Steffen Weber authored
If CONFIG_SCSI_SMARTPQI=y then don't build this driver as a module. Signed-off-by:
Steffen Weber <steffen.weber@gmail.com> Signed-off-by:
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Douglas Gilbert authored
Add resp_write_scat() function to support decoding WRITE SCATTERED (16 and 32). Also weave resp_write_scat() into the cdb decoding logic. Signed-off-by:
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Douglas Gilbert authored
Reviewer suggested using the ARRAY_SIZE macro. That reduced one of the subtle inter-dependencies in the parser's tables. It is important that commands which simulate media access, indicate this in the flags for that command. The flag to do that was FF_DIRECT_IO. On reflection FF_MEDIA_IO seems a more accurate description. Signed-off-by:
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Douglas Gilbert authored
WRITE SCATTERED needs to take several "bites" out of the data-out buffer. Expand the do_device_access() function to take a sg_skip argument. Signed-off-by:
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Douglas Gilbert authored
Various cdb masks incorrectly assumed the GROUP NUMBER field was 5 bits long. It is actually 6 bits long. Correct. Also fix mask failure (in same byte) to allow DLD0 in READ(16) and WRITE(16). Signed-off-by:
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Douglas Gilbert authored
Some of my development tools tend to add spaces (my preference) rather than tabs (kernel convention). Running unexpand to clean these spaces up found more of them than checkpatch.pl did. Then checkpatch.pl complained about other style violations in those newly tabbed lines. Signed-off-by:
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Suganath Prabu Subramani authored
Performance improvement using block layer tag. Curent driver gets scsiio tracker and free smid from link list and array based tracking managed by driver. Accessing list in main io path is performance pentaly because of protection using spinlock "scsi_lookup_lock". In this patch: 1. Driver removes all link list access from main io path and use scmd->request->tag to get free smid. 2. Instead of holding 'struct scsiio_tracker' in its own pool driver can embed it into the scsi command. Driver provides cmd_size in scsi_host_template, so that struct scsiio_tracker is preallocated by scsi mid layer for each scsi command. Signed-off-by:
Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by:
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Hannes Reinecke authored
Use 'host_busy' instead of counting outstanding commands by hand. Signed-off-by:
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Hannes Reinecke authored
Move the check for outstanding commands out of the function allowing us to simplify the overall code. Signed-off-by:
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Hannes Reinecke authored
No functional change. Code optimization. One can simply check 'target_busy' or 'device_busy' when figuring out if there are outstanding commands; no need to painstakingly count them by hand. [mkp: tweaked patch description] Signed-off-by:
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Hannes Reinecke authored
ioctl passthrough commands require a SCSIIO smid, but cannot easily integrate with the block layer. But the driver already has reserved some SCSIIO smids and we're only ever allowing one ioctl command at a time we can use the first reserved smid for ioctl commands. Signed-off-by:
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Hannes Reinecke authored
When attempting a command abort we should check the command status prior to sending the abort; the command might've been completed already. Signed-off-by:
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