diff options
| author | Narsimhulu Musini <nmusini@cisco.com> | 2016-03-17 10:51:15 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 23:57:09 +0300 |
| commit | 0da8519b2b1f08113cda65af88a4c9e35157dd53 (patch) | |
| tree | d5f7c8416191b86837c800460e4972a3e5d28a72 /drivers/scsi/snic | |
| parent | c9747821f9bbff6c07fa36087b003d89d05245c8 (diff) | |
| download | linux-0da8519b2b1f08113cda65af88a4c9e35157dd53.tar.xz | |
snic: Fixing race in the hba reset and IO/TM completion
While HBA reset is in progress, if IO/TM completion is received for the
same IO then IO/TM completion path releases the driver private resources
associated with IO. This fix prevents releasing the resources in
IO and TM completion path if HBA reset is in progress.
Signed-off-by: Narsimhulu Musini <nmusini@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/snic')
| -rw-r--r-- | drivers/scsi/snic/snic.h | 5 | ||||
| -rw-r--r-- | drivers/scsi/snic/snic_scsi.c | 11 |
2 files changed, 15 insertions, 1 deletions
diff --git a/drivers/scsi/snic/snic.h b/drivers/scsi/snic/snic.h index d7f5ba6ba84c..8ed778d4dbb9 100644 --- a/drivers/scsi/snic/snic.h +++ b/drivers/scsi/snic/snic.h @@ -95,6 +95,8 @@ #define SNIC_DEV_RST_NOTSUP BIT(25) #define SNIC_SCSI_CLEANUP BIT(26) #define SNIC_HOST_RESET_ISSUED BIT(27) +#define SNIC_HOST_RESET_CMD_TERM \ + (SNIC_DEV_RST_NOTSUP | SNIC_SCSI_CLEANUP | SNIC_HOST_RESET_ISSUED) #define SNIC_ABTS_TIMEOUT 30000 /* msec */ #define SNIC_LUN_RESET_TIMEOUT 30000 /* msec */ @@ -216,9 +218,10 @@ enum snic_msix_intr_index { SNIC_MSIX_INTR_MAX, }; +#define SNIC_INTRHDLR_NAMSZ (2 * IFNAMSIZ) struct snic_msix_entry { int requested; - char devname[IFNAMSIZ]; + char devname[SNIC_INTRHDLR_NAMSZ]; irqreturn_t (*isr)(int, void *); void *devid; }; diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index 5a709ebdb282..abada16b375b 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -601,6 +601,12 @@ snic_icmnd_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) sc->device->lun, sc, sc->cmnd[0], snic_cmd_tag(sc), CMD_FLAGS(sc), rqi); + if (CMD_FLAGS(sc) & SNIC_HOST_RESET_CMD_TERM) { + spin_unlock_irqrestore(io_lock, flags); + + return; + } + SNIC_BUG_ON(rqi != (struct snic_req_info *)ctx); WARN_ON_ONCE(req); if (!rqi) { @@ -782,6 +788,11 @@ snic_process_itmf_cmpl(struct snic *snic, io_lock = snic_io_lock_hash(snic, sc); spin_lock_irqsave(io_lock, flags); + if (CMD_FLAGS(sc) & SNIC_HOST_RESET_CMD_TERM) { + spin_unlock_irqrestore(io_lock, flags); + + return ret; + } rqi = (struct snic_req_info *) CMD_SP(sc); WARN_ON_ONCE(!rqi); |