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path: root/drivers/block/mtip32xx
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2013-05-08Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block driver updates from Jens Axboe: "It might look big in volume, but when categorized, not a lot of drivers are touched. The pull request contains: - mtip32xx fixes from Micron. - A slew of drbd updates, this time in a nicer series. - bcache, a flash/ssd caching framework from Kent. - Fixes for cciss" * 'for-3.10/drivers' of git://git.kernel.dk/linux-block: (66 commits) bcache: Use bd_link_disk_holder() bcache: Allocator cleanup/fixes cciss: bug fix to prevent cciss from loading in kdump crash kernel cciss: add cciss_allow_hpsa module parameter drivers/block/mg_disk.c: add CONFIG_PM_SLEEP to suspend/resume functions mtip32xx: Workaround for unaligned writes bcache: Make sure blocksize isn't smaller than device blocksize bcache: Fix merge_bvec_fn usage for when it modifies the bvm bcache: Correctly check against BIO_MAX_PAGES bcache: Hack around stuff that clones up to bi_max_vecs bcache: Set ra_pages based on backing device's ra_pages bcache: Take data offset from the bdev superblock. mtip32xx: mtip32xx: Disable TRIM support mtip32xx: fix a smatch warning bcache: Disable broken btree fuzz tester bcache: Fix a format string overflow bcache: Fix a minor memory leak on device teardown bcache: Documentation updates bcache: Use WARN_ONCE() instead of __WARN() bcache: Add missing #include <linux/prefetch.h> ...
2013-04-29mtip32xx: Workaround for unaligned writesAsai Thambi S P
Workaround for handling unaligned writes: limit number of outstanding unaligned writes Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-04-14mtip32xx: mtip32xx: Disable TRIM supportAsai Thambi S P
Temporarily disabling TRIM support until TRIM related issues are addressed in the firmware. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-04-14mtip32xx: fix a smatch warningAsai Thambi S P
Reported smatch warning: drivers/block/mtip32xx/mtip32xx.c:4163 mtip_block_shutdown() warn: variable dereferenced before check 'dd->disk' (see line 4159) dd->disk->disk_name accessed before the check if dd->disk is NULL. Fixed this and access of dd->queue/dd->disk->queue. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-04-04mtip32xx: fix two smatch warningsJens Axboe
Dan reports: New smatch warnings: drivers/block/mtip32xx/mtip32xx.c:2728 show_device_status() warn: variable dereferenced before check 'dd' (see line 2727) drivers/block/mtip32xx/mtip32xx.c:2758 show_device_status() warn: variable dereferenced before check 'dd' (see line 2757) which are checking if dd == NULL, in a list_for_each_entry() type loop. Get rid of the check, dd can never be NULL here. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-04-03mtip32xx: Add debugfs entry device_statusAsai Thambi S P
This patch adds a new debugfs entry 'device_status' in /sys/kernel/debug/rssd. The value of this entry shows devices online and those in the process of removing. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-04-03mtip32xx: return 0 from pci probe in case of rebuildAsai Thambi S P
Fix to return 0 from pci probe in case of rebuild. If not, pci consider probe has failed, and crash during rmmod. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-04-03mtip32xx: recovery from command timeoutAsai Thambi S P
To recover from command timeouts, reset the device. In addition to that improved timeout handling of PIO commands. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-22mtip32xx: fix error return code in mtip_pci_probe()Wei Yongjun
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-02-20Merge branch 'stable/for-jens-3.9' of ↵Jens Axboe
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-3.9/drivers Konrad writes: Please git pull the following branch: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-jens-3.9 which has bug-fixes that did not make it in v3.8. They all are marked as material for the stable tree as well. There are two bug-fixes for the code that has been in there for some time (that is the Jan's fix and one of mine). And there are two bug-fixes for the persistent grant feature that debuted in v3.8 for xen blk[back|front]end.
2013-02-07drivers/block/mtip32xx: add missing GENERIC_HARDIRQS dependencyHeiko Carstens
The MTIP32XX driver calls devm_request_irq() and therefore needs a GENERIC_HARDIRQS dependency to prevent building it on s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-01-12drivers/block/mtip32xx/mtip32xx.c:1726:5: sparse: symbol 'mtip_send_trim' ↵Fengguang Wu
was not declared. Should it be static? Hi Asai, FYI, there are new sparse warnings show up in tree: git://git.kernel.dk/linux-block.git for-3.9/drivers head: 3d6a87430e764cf4132710538139c10970929189 commit: 152834694dcb90d3088bc77fa436755c66553929 [2/3] mtip32xx: add trim support >> drivers/block/mtip32xx/mtip32xx.c:1726:5: sparse: symbol 'mtip_send_trim' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:3348:17: sparse: cast to restricted __le32 drivers/block/mtip32xx/mtip32xx.c:4125:1: sparse: symbol 'mtip_workq_sdbf0' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4126:1: sparse: symbol 'mtip_workq_sdbf1' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4127:1: sparse: symbol 'mtip_workq_sdbf2' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4128:1: sparse: symbol 'mtip_workq_sdbf3' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4129:1: sparse: symbol 'mtip_workq_sdbf4' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4130:1: sparse: symbol 'mtip_workq_sdbf5' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4131:1: sparse: symbol 'mtip_workq_sdbf6' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c:4132:1: sparse: symbol 'mtip_workq_sdbf7' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c: In function 'mtip_hw_read_flags': drivers/block/mtip32xx/mtip32xx.c:2804:1: warning: the frame size of 1036 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/block/mtip32xx/mtip32xx.c: In function 'mtip_hw_read_registers': drivers/block/mtip32xx/mtip32xx.c:2781:1: warning: the frame size of 1044 bytes is larger than 1024 bytes [-Wframe-larger-than=] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-01-12drivers/block/mtip32xx/mtip32xx.c:4029:1: sparse: symbol 'mtip_workq_sdbf0' ↵Fengguang Wu
was not declared. Should it be static? Hi Asai, FYI, there are new sparse warnings show up in tree: git://git.kernel.dk/linux-block.git for-3.9/drivers head: 3d6a87430e764cf4132710538139c10970929189 commit: 16c906e51c6f08a15763a85b5686e1ded35e77ab [1/3] mtip32xx: Add workqueue and NUMA support drivers/block/mtip32xx/mtip32xx.c:3267:17: sparse: cast to restricted __le32 >> drivers/block/mtip32xx/mtip32xx.c:4029:1: sparse: symbol 'mtip_workq_sdbf0' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4030:1: sparse: symbol 'mtip_workq_sdbf1' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4031:1: sparse: symbol 'mtip_workq_sdbf2' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4032:1: sparse: symbol 'mtip_workq_sdbf3' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4033:1: sparse: symbol 'mtip_workq_sdbf4' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4034:1: sparse: symbol 'mtip_workq_sdbf5' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4035:1: sparse: symbol 'mtip_workq_sdbf6' was not declared. Should it be static? >> drivers/block/mtip32xx/mtip32xx.c:4036:1: sparse: symbol 'mtip_workq_sdbf7' was not declared. Should it be static? drivers/block/mtip32xx/mtip32xx.c: In function 'mtip_hw_read_flags': drivers/block/mtip32xx/mtip32xx.c:2723:1: warning: the frame size of 1036 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/block/mtip32xx/mtip32xx.c: In function 'mtip_hw_read_registers': drivers/block/mtip32xx/mtip32xx.c:2700:1: warning: the frame size of 1044 bytes is larger than 1024 bytes [-Wframe-larger-than=] Please consider folding the below diff :-) Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-01-11mtip32xx: add trim supportAsai Thambi S P
TRIM support added through vendor unique command. Signed-off-by: Sam Bradshaw < sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-01-11mtip32xx: Add workqueue and NUMA supportAsai Thambi S P
This patch contains * parallel command completion using workers * bind the workers to the chosen numa node * bind isr to the chosen numa node * allocating memory in the chosen numa node Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-01-11mtip32xx: fix for crash when the device surprise removed during rebuildAsai Thambi S P
When rebuild is in progress, disk->queue is yet to be created. Surprise removing the device will call remove()-> del_gendisk(). del_gendisk() expect disk->queue be not NULL. Fix is to call put_disk() when disk_queue is NULL. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-01-11mtip32xx: fix for driver hang after a command timeoutAsai Thambi S P
If an I/O command times out when a PIO command is active, MTIP_PF_EH_ACTIVE_BIT is not cleared. This results in I/O hang in the driver. Fix is to clear this bit. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-11-23mtip32xx: Fix padding issueSelvan Mani
Hi Jens, Another tiny patch. Removed __packed before the struct smart_attr and added __packed at end of the structure to fix padding issue. Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-11-23mtip32xx: fix potential NULL pointer dereference in mtip_timeout_function()Wei Yongjun
The dereference to port should be moved below the NULL test. dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-11-23mtip32xx: fix shift larger than type warningJens Axboe
If we're building a 32-bit kernel and CONFIG_LBADF isn't set, sector_t is 32-bits wide. The shifts by 32 and 40 are thus larger than we support. Cast the sector offset to a u64 to avoid these warnings. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-11-23mtip32xx: Fix incorrect mask used for erase modeSelvan Mani
Previous commit use value 3 for erasemode mask. Changing the mask to correct value to 2 Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-11-23mtip32xx: Fix to make lba address correct in big-endian systemsSelvan Mani
Earlier lba address was assigned directly to lba_low and lba_low_ex, which would result in a different number (bytes reversed) in big-endian systems. Now assigning lba address byte-by-byte to fis. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-11-23mtip32xx: fix potential crash on SEC_ERASE_UNITSelvan Mani
The mtip driver lifted this code from elsewhere and then added a special handling check for SEC_ERASE_UNIT. If the caller tries to do a security erase but passes no output data for the command then outbuf is not allocated and the driver duly explodes. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-10-30mtip32xx:Added appropriate timeout value for secure eraseSelvan Mani
Added appropriate timeout value for secure erase based on identify device data Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: fix user_buffer check in exec_drive_commandDavid Milburn
Current user_buffer check is incorrect and causes hdparm to fail # hdparm -I /dev/rssda HDIO_DRIVE_CMD(identify) failed: Input/output error /dev/rssda: Patching linux-3.6-rc5 hdparm works as expected # hdparm -I /dev/rssda /dev/rssda: ATA device, with non-removable media Model Number: DELL_P320h-MTFDGAL350SAH Serial Number: 00000000121302025F01 Firmware Revision: B1442808 <snip> Reported-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: Remove dead codeAsai Thambi S P
Removed the dead code in mtip_hw_read_registers() and mtip_hw_read_flags(). Reported-by: Coverity Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: Change printk to pr_xxxxAsai Thambi S P
Changed printk to be compliant with latest style changes Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: Proper reporting of write protect status on big-endianAsai Thambi S P
Proper reporting of write protect status on big-endian Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: Increase timeout for standby commandAsai Thambi S P
Increased timeout for standby command to work with larger capacity drives Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: Handle NCQ commands during the security locked stateAsai Thambi S P
Return error for NCQ commands when the drive is in security locked state Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-09-12mtip32xx: Add support for new devicesAsai Thambi S P
Added supported device IDs in pci table Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-06-05mtip32xx: Create debugfs entries for troubleshootingAsai Thambi S P
On module load, creates a debugfs parent 'rssd' in debugfs root. Then for each device, create a new node with corresponding disk name. Under the new node, two entries 'registers' and 'flags' are created. NOTE: These entries were removed from sysfs in the previous patch Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-06-05mtip32xx: Remove 'registers' and 'flags' from sysfsAsai Thambi S P
This patch removes entries 'registers' and 'flags' from sysfs. Updated ABI file to reflect this change. Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-06-04mtip32xx: Remove version.h header file inclusionSachin Kamat
version.h header file inclusion is no longer required. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
2012-05-31mtip32xx: Changes to sysfs entriesAsai Thambi S P
* Formatted the output of 'registers' entry * Added "Commands in Q' to output of 'registers' entry * Added a new entry 'flags' Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Convert macro definitions for flag bits to enumAsai Thambi S P
Convert macro definitions for flags bits to enum Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: minor performance tweakAsai Thambi S P
When checking for command completions if the register value is zero, proceed to next register. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Fix to support more than one sector in exec_drive_command()Asai Thambi S P
Fix to support more than one sector in exec_drive_command(). Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Use plain spinlock for 'cmd_issue_lock'Asai Thambi S P
'cmd_issue_lock' is for only acquiring a free slot, and it is not used in interrupt context. So replaced irq version with non-irq version of spinlock. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Set block queue boundary variablesAsai Thambi S P
Set the following block queue boundary variables * max_hw_sectors * max_segment_size Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Removed setting of q->nr_requests. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Fix to handle TFE for PIO(IOCTL/internal) commandsAsai Thambi S P
If a PIO (IOCTL/internal) command resulted in TFE, signal the wait event or break out of polling. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Change HDIO_GET_IDENTITY to return stored dataAsai Thambi S P
For the ioctl command HDIO_GET_IDENTITY, return the stored copy of IDENTIFY DATA instead of sending the command to the device - similar to libata. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: Set custom timeouts for PIO commandsAsai Thambi S P
This change sets custom timeouts depending on PIO command. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31mtip32xx: fix clearing an incorrect register in mtip_init_portAsai Thambi S P
Fix clearing an incorrect register in mtip_init_port Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-11mtip32xx: release the semaphore on an error pathAsai Thambi S P
Release the semaphore in an error path in mtip_hw_get_scatterlist(). This fixes the smatch warning inconsistent returns. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-12block: mtip32xx: remove HOTPLUG_PCI_PCIE dependancyGreg Kroah-Hartman
This removes the HOTPLUG_PCI_PCIE dependency on the driver and makes it depend on PCI. Cc: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: dump tagmap on failureAsai Thambi S P
Dump tagmap on failure, instead of individual tags. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: fix handling of commands in various scenariosAsai Thambi S P
* If a ncq command time out and a non-ncq command is active, skip restart port * Queue(pause) ncq commands during operations spanning more than one non-ncq commands - secure erase, download microcode * When a non-ncq command is active, allow incoming non-ncq commands to wait instead of failing back * Changed timeout for download microcode and smart commands * If the device in write protect mode, fail all writes (do not send to device) * Set maximum retries to 2 Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: Shorten macro namesAsai Thambi S P
Shortened macros used to represent mtip_port->flags and dd->dd_flag Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: misc changesAsai Thambi S P
* Handle the interrupt completion of polled internal commands * Do not check remove pending flag for standby command * On rebuild failure, - set corresponding bit dd_flag - do not send standby command * Free ida index in remove path Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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