From: Dan Williams <dan.j.williams@intel.com>
To: linux-scsi@vger.kernel.org
Cc: linux-ide@vger.kernel.org
Subject: [PATCH v4 05/10] libsas: check for 'gone' expanders in smp_execute_task()
Date: Mon, 16 Jan 2012 21:11:27 -0800 [thread overview]
Message-ID: <20120117051127.22344.52386.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20120117050847.22344.4961.stgit@localhost6.localdomain6>
No sense in issuing or retrying commands to an expander that has been
removed.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
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;
next prev parent reply other threads:[~2012-01-17 5:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-17 5:11 [resend PATCH v4 00/10] libsas: eh reworks (ata-eh vs discovery, races, ...) Dan Williams
2012-01-17 5:11 ` [PATCH v4 01/10] libsas: convert dev->gone to flags Dan Williams
2012-01-17 5:11 ` [PATCH v4 02/10] libsas: prevent domain rediscovery competing with ata error handling Dan Williams
2012-01-17 5:11 ` [PATCH v4 03/10] libsas: fix timeout vs completion race Dan Williams
2012-01-17 5:11 ` [PATCH v4 04/10] libsas: don't mark expanders as gone when a child device is removed Dan Williams
2012-01-17 5:11 ` Dan Williams [this message]
2012-01-17 5:11 ` [PATCH v4 06/10] libsas: fix sas_find_local_phy(), take phy references Dan Williams
2012-01-17 5:11 ` [PATCH v4 07/10] libsas: don't recover 'gone' devices in sas_ata_hard_reset() Dan Williams
2012-01-17 5:11 ` [PATCH v4 08/10] isci: ->lldd_ata_check_ready handler Dan Williams
2012-01-17 5:11 ` [PATCH v4 09/10] libsas: pre-clean commands that won the eh vs completion race Dan Williams
2012-01-17 5:11 ` [PATCH v4 10/10] libsas: feed the scsi_block_when_processing_errors() meter Dan Williams
2012-02-02 8:04 ` Dan Williams
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