[PATCH v4 05/10] libsas: check for 'gone' expanders in smp_execute_task()
From: Dan Williams <hidden>
Date: 2012-01-17 05:11:28
Also in:
linux-scsi
Subsystem:
scsi libsas subsystem, scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
No sense in issuing or retrying commands to an expander that has been removed. Signed-off-by: Dan Williams <redacted> --- drivers/scsi/libsas/sas_expander.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 7701ab5..6fb1f3a 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c@@ -74,6 +74,11 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size, mutex_lock(&dev->ex_dev.cmd_mutex); for (retry = 0; retry < 3; retry++) { + if (test_bit(SAS_DEV_GONE, &dev->state)) { + res = -ECOMM; + break; + } + task = sas_alloc_task(GFP_KERNEL); if (!task) { res = -ENOMEM;