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| author | Joe Lawrence <joe.lawrence@stratus.com> | 2014-08-26 17:12:01 -0400 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-16 09:10:00 -0700 |
| commit | 232792b6b43b1420324e432a0498602b9c8d5a8c (patch) | |
| tree | 8d1b0a950b5a903205202c1212ccece8aa0e62d5 /drivers | |
| parent | c821e0d5b20006acdaca7aa378097a084986e37b (diff) | |
| download | linux-232792b6b43b1420324e432a0498602b9c8d5a8c.tar.gz linux-232792b6b43b1420324e432a0498602b9c8d5a8c.tar.bz2 linux-232792b6b43b1420324e432a0498602b9c8d5a8c.zip | |
qla2xxx: Schedule board_disable only once
There are various callers of qla2x00_check_reg{32,16}_for_disconnect
that may schedule board removal on PCI-disconnect. Test-and-set a
dedicated flag before scheduling board_disable so it is invoked only
once.
Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 3 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 14 |
2 files changed, 11 insertions, 6 deletions
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index b64399153135..4267ec6f3258 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3402,6 +3402,9 @@ typedef struct scsi_qla_host { #define FX00_CRITEMP_RECOVERY 25 #define FX00_HOST_INFO_RESEND 26 + unsigned long pci_flags; +#define PFLG_DISCONNECTED 0 /* PCI device removed */ + uint32_t device_flags; #define SWITCH_FOUND BIT_0 #define DFLG_NO_CABLE BIT_1 diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 016ebed880f5..fd75b9139693 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -117,12 +117,14 @@ qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg) { /* Check for PCI disconnection */ if (reg == 0xffffffff) { - /* - * Schedule this on the default system workqueue so that all the - * adapter workqueues and the DPC thread can be shutdown - * cleanly. - */ - schedule_work(&vha->hw->board_disable); + if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags)) { + /* + * Schedule this (only once) on the default system + * workqueue so that all the adapter workqueues and the + * DPC thread can be shutdown cleanly. + */ + schedule_work(&vha->hw->board_disable); + } return true; } else return false; |