From 3a9c5560f677690f65038f399f4f598c79b83186 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 21 Dec 2011 15:19:56 -0800 Subject: [SCSI] libsas: check for 'gone' expanders in smp_execute_task() No sense in issuing or retrying commands to an expander that has been removed. Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/scsi') diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 7701ab588404..6fb1f3afd1e0 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; -- cgit v1.2.3-55-g7522