- May 29, 2014
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Jayamohan Kallickal authored
Before probe for function was completed, iSCSI Daemon had initiated login to target while OS was coming up. The targets which had node.startup=automatic, login process was initiated.Since function specific initialization was still in progress this lead to kernel panic. Fixed the issue by moving iscsi_host_add() call after adapter initialization is done. Signed-off-by:
John Soni Jose <sony.john-n@emulex.com> Signed-off-by:
Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by:
Christoph Hellwig <hch@lst.de>
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Jayamohan Kallickal authored
Getting WRB for MCCQ posting was done before looking if tag is available or not. This lead to increase phba->ctrl.mcc_obj.q.used variable and the WARN_ON message was coming from wrb_from_mccq(). Moved getting wrb from mccq after checking for the tag. In wrb_from_mccq(), memset is done before returning wrb ptr. Removed memset of mccq wrb from all other functions. Signed-off-by:
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- May 28, 2014
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Sujit Reddy Thumma authored
Error handling in UFS driver is broken and resets the host controller for fatal errors without re-initialization. Correct the fatal error handling sequence according to UFS Host Controller Interface (HCI) v1.1 specification. o Processed requests which are completed w/wo error are reported to SCSI layer and any pending commands that are not started are aborted in the controller and re-queued into scsi mid-layer queue. o Upon determining fatal error condition the host controller may hang forever until a reset is applied. Block SCSI layer for sending new requests and apply reset in a separate error handling work. o SCSI is informed about the expected Unit-Attention exception from the device for the immediate command after a reset so that the SCSI layer take necessary steps to establish communication with the device. Signed-off-by:
Sujit Reddy Thumma <sthumma@codeaurora.org> Reviewed-by:
Yaniv Gardi <ygardi@codeaurora.org> Tested-by:
Dolev Raviv <draviv@codeaurora.org> Acked-by:
Vinayak Holikatti <vinholikatti@gmail.com> Signed-off-by:
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Sujit Reddy Thumma authored
As of now SCSI initiated error handling is broken because, the reset APIs don't try to bring back the device initialized and ready for further transfers. In case of timeouts, the scsi error handler takes care of handling aborts and resets. Improve the error handling in such scenario by resetting the device and host and re-initializing them in proper manner. Signed-off-by:
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Sujit Reddy Thumma authored
There is a possible race condition in the hardware when the abort command is issued to terminate the ongoing SCSI command as described below: - A bit in the door-bell register is set in the controller for a new SCSI command. - In some rare situations, before controller get a chance to issue the command to the device, the software issued an abort command. - If the device recieves abort command first then it returns success because the command itself is not present. - Now if the controller commits the command to device it will be processed. - Software thinks that command is aborted and proceed while still the device is processing it. - The software, controller and device may go out of sync because of this race condition. To avoid this, query task presence in the device before sending abort task command so that after the abort operation, the command is guaranteed to be non-existent in both controller and the device. Signed-off-by:
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Sujit Reddy Thumma authored
Currently, sending Task Management (TM) command to the card might be broken in some scenarios as listed below: Problem: If there are more than 8 TM commands the implementation returns error to the caller. Fix: Wait for one of the slots to be emptied and send the command. Problem: Sometimes it is necessary for the caller to know the TM service response code to determine the task status. Fix: Propogate the service response to the caller. Problem: If the TM command times out no proper error recovery is implemented. Fix: Clear the command in the controller door-bell register, so that further commands for the same slot don't fail. Problem: While preparing the TM command descriptor, the task tag used should be unique across SCSI/NOP/QUERY/TM commands and not the task tag of the command which the TM command is trying to manage. Fix: Use a unique task tag instead of task tag of SCSI command. Problem: Since the TM command involves H/W communication, abruptly ending the request on kill interrupt signal might cause h/w malfunction. Fix: Wait for hardware completion interrupt with TASK_UNINTERRUPTIBLE set. Signed-off-by: -
Sujit Reddy Thumma authored
Make undeclared functions static and declare exported symbols to suppress warnings from sparse tool. Signed-off-by:
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Sujit Reddy Thumma authored
Fix many warnings with incorrect endian assumptions which makes the code unportable to new architectures. The UFS specification defines the byte order as big-endian for UPIU structure and little-endian for the host controller transfer/task management descriptors. Signed-off-by:
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Joe Handzik authored
rescan_hba_mode was defined as a u8 so could never be less than zero: rescan_hba_mode = hpsa_hba_mode_enabled(h); if (rescan_hba_mode < 0) goto out; Signed-off-by:Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by:
Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Finn Thain authored
The sun3 drivers suffer from a whole bunch of duplicated code. Fix this by following the g_NCR5380_mmio example. (Notionally, sun3_scsi relates to sun3_scsi_vme in the same way that g_NCR5380 relates to g_NCR5380_mmio.) Dead code is also removed: we now have working debug macros so SUN3_SCSI_DEBUG is undesirable. Dead code within #ifdef OLD_DMA is also dropped, consistent with sun3_scsi_vme.c. Signed-off-by:
Finn Thain <fthain@telegraphics.com.au> Acked-by:
Sam Creasey <sammy@sammy.net> Signed-off-by:
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Finn Thain authored
Move the #include "NCR5380.h" out of the sun3_scsi.h header file and into the driver .c files, like all the other NCR5380 drivers in the tree. This improves uniformity and reduces the depth of nested includes. The sequence of #include's, #define's and #if's no longer does my head in. Signed-off-by:
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Finn Thain authored
Remove the unused (and divergent) debugging macro definitions from the sun3_NCR5380 and atari_NCR5380 drivers. These drivers have been converted to use the common macros in NCR5380.h. Signed-off-by:
Michael Schmitz <schmitz@debian.org> Signed-off-by:
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Finn Thain authored
All three NCR5380 core driver implementations share the same NCR5380.h header file so they need to agree on certain macro definitions. The flag bit used by the NDEBUG_MERGING macro in atari_NCR5380 and sun3_NCR5380 collides with the bit used by NDEBUG_LISTS. Moreover, NDEBUG_ABORT appears in NCR5380.c so it should be defined in NCR5380.h rather than in each of the many drivers using that core. An undefined NDEBUG_ABORT macro caused compiler errors and led to dodgy workarounds in the core driver that can now be removed. (See commits f566a576 and 185a7a1c .) Move all of the NDEBUG_ABORT, NDEBUG_TAGS and NDEBUG_MERGING macro definitions into NCR5380.h where all the other NDEBUG macros live. Also, incorrect "#ifdef NDEBUG" becomes "#if NDEBUG" to fix the warning: drivers/scsi/mac_scsi.c: At top level: drivers/scsi/NCR5380.c:418: warning: 'NCR5380_print' defined but not used drivers/scsi/NCR5380.c:459: warning: 'NCR5380_print_phase' defined but not used The debugging code is now enabled when NDEBUG != 0. Signed-off-by:
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Finn Thain authored
All NCR5380 drivers already include the NCR5380.h header. Better to adopt those macros rather than have three variations on them. Moreover, the macros in NCR5380.h are preferable because the atari_NCR5380 and sun3_NCR5380 versions are inflexible. For example, they can't accomodate dprintk(NDEBUG_MAIN | NDEBUG_QUEUES, ...) Replace the *_PRINTK macros from atari_NCR5380.h and sun3_NCR5380.h with the equivalent macros from NCR5380.h. Signed-off-by:
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Finn Thain authored
All NCR5380 drivers already include the NCR5380.h header. Better to adopt those macros rather than have three variations on them. Moreover, the macros in NCR5380.h are preferable anyway: the atari_NCR5380 and sun3_NCR5380 versions are inflexible. For example, they can't accomodate NCR5380_dprint(NDEBUG_MAIN | NDEBUG_QUEUES, ...) Replace the NCR_PRINT* macros from atari_NCR5380.h and sun3_NCR5380.h with the equivalent macros from NCR5380.h. Signed-off-by:
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Finn Thain authored
There are three implementations of the core NCR5380 driver and three sets of debugging macro definitions. And all three implementations use the NCR5380.h header as well. Two of the definitions of the dprintk macro accept a variable argument list whereas the third does not. Standardize on the variable argument list. Signed-off-by:
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Finn Thain authored
The change from cmd->target to cmd->device->id was apparently the purpose of commit a7f251228390e87d86c5e3846f99a455517fdd8e in kernel/git/tglx/history.git but some instances have been missed. Also fix the "NDEBUG_LAST_WRITE_SENT" and "NDEBUG_ALL" typo's. Also fix some format strings (%ul becomes %lu) that caused compiler warnings. Signed-off-by:
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Finn Thain authored
Only the NCR5380_dprint() macro should invoke the NCR5380_print() function. That's why NCR5380.c only defines the function #if NDEBUG. Use the standard macro. Signed-off-by:
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Finn Thain authored
Signed-off-by:
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Finn Thain authored
HOSTS_C is always undefined. There is no hosts.c anymore. Signed-off-by:
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Finn Thain authored
BOARD_NORMAL is completely unused and BOARD_NCR53C400 is used only by g_NCR5380 internally. Remove the unused definitions. Signed-off-by:
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- May 20, 2014
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Christoph Hellwig authored
Add an option to only transfer half the data for every n-th command. Signed-off-by:
Douglas Gilbert <dgilbert@interlog.com> Reviewed-by:
Nicholas Bellinger <nab@linux-iscsi.org>
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Christoph Hellwig authored
Taken almost entirely from Nicholas Bellinger's scsi-mq conversion. Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Reviewed-by:
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Maurizio Lombardi authored
In case of error, the bnx2fc_allocate_hash_table() didn't free all the memory it allocated. Signed-off-by:
Maurizio Lombardi <mlombard@redhat.com> Acked-by:
Eddie Wai <eddie.wai@broadcom.com> Signed-off-by:
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Maurizio Lombardi authored
If bnx2fc_allocate_hash_table() for some reasons fails, it is possible that the hash_tbl_segments or the hash_tbl_pbl pointers are NULL. In this case bnx2fc_free_hash_table() will panic the system. this patch also fixes a memory leak, the hash_tbl_segments pointer was never freed. Signed-off-by:
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Maurizio Lombardi authored
hash_table_size is not used by the bnx2fc_free_hash_table() function. Signed-off-by:
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Joe Handzik authored
Signed-off-by:
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Joe Handzik authored
And while we're at it fix a magic number Signed-off-by:
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Joe Handzik authored
Signed-off-by:
Scott Teel <scott.teel@hp.com> Signed-off-by:
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Joe Handzik authored
Checking for a NULL return from a kzalloc call in hpsa_get_pdisk_of_ioaccel2. Signed-off-by:
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Suresh Thiagarajan authored
Checking return value for the memory allocattion and freeing it while exiting the function Signed-off-by:
Viswas G <Viswas.G@pmcs.com> Signed-off-by:
Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by:
Tomas Henzl <thenzl@redhat.com> Acked-by:
Jack Wang <xjtuwjp@gmail.com> Signed-off-by:
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Ming Lei authored
Access to tgt->req_vq is strictly serialized by spin_lock of tgt->tgt_lock, so the ACCESS_ONCE() isn't necessary. smp_read_barrier_depends() in virtscsi_req_done was introduced to order reading req_vq and decreasing tgt->reqs, but it isn't needed now because req_vq is read from scsi->req_vqs[vq->index - VIRTIO_SCSI_VQ_BASE] instead of tgt->req_vq, so remove the unnecessary barrier. Also remove related comment about the barrier. Signed-off-by:
Ming Lei <tom.leiming@gmail.com> Acked-by:
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James Smart authored
Add a memory barrier to ensure the valid bit is read before any of the cqe payload is read. This fixes an issue seen on Power where the cqe payload was getting loaded before the valid bit. When this occurred, we saw an iotag out of range error when a command completed, but since the iotag looked invalid the command didn't get completed to scsi core. Later we hit the command timeout, attempted to abort the command, then waited for the aborted command to get returned. Since the adapter already returned the command, we timeout waiting, and end up escalating EEH all the way to host reset. This patch fixes this issue. Signed-off-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
James Smart <james.smart@emulex.com> --- lpfc_sli.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) Signed-off-by:
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Finn Thain authored
Signed-off-by:
Michael Schmitz <schmitzmic@gmail.com> Signed-off-by:
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Michael Schmitz authored
[Resend of earlier patch - added equivalent changes to sun3 NCR5380 code] The abort/reset lowlevel return codes had changed with the new error SCSI handling - update Atari and Sun3 NCR5380 drivers to reflect this. Change reset handling for Atari to clear queues only, do not attempt to call done() on each command aborted by the reset. The EH code should do that for us. Queues _must_ be cleared, otherwise atari_scsi_bus_reset will not release the ST-DMA lock, deadlocking further error recovery. Update the Sun3 NCR5380 driver as well - the Sun3 driver was derived from the Atari one. Kudos to Finn Thain for the Sun3 part and cleaning up the header files. After the header cleanup, the initio.h include (!) can be dropped from sun3_scsi.h now. Signed-off-by:
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Mathias Krause authored
The format strings for various printk()s make use of a temporary variable that is declared 'static'. This is probably not intended, so fix those. Found in the PaX patch, written by the PaX Team. Signed-off-by:
Mathias Krause <minipli@googlemail.com> Acked-by:
Hannes Reinecke <hare@suse.de> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: PaX Team <pageexec@freemail.hu> Signed-off-by:
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Marek Vasut authored
Minor fix for a message in the driver so that it matches the function name. Signed-off-by:
Marek Vasut <marex@denx.de> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by:
Bradley Grove <bgrove@attotech.com> Signed-off-by:
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Alexey Khoroshilov authored
bfa_fcb_pbc_vport_create() is called only from bfa_fcs_pbc_vport_init(), that is called only from bfad_drv_start() with bfad_lock spinlock held. So the patch replaces GFP_KERNEL with GFP_ATOMIC to avoid sleeping in atomic spinlock context. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by:
Anil Gurumurthy <anil.gurumurthy@qlogic.com> Signed-off-by:
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Vikas Chaudhary authored
Signed-off-by:
Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Adheer Chandravanshi authored
Signed-off-by:
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