From: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
There's no point in trying since it can't work, and if you do
try, it will just hang the system on shutdown.
Signed-off-by: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
---
drivers/scsi/hpsa.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 1264b51..20fc598 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4884,6 +4884,15 @@ static void hpsa_flush_cache(struct ctlr_info *h)
{
char *flush_buf;
struct CommandList *c;
+ unsigned long flags;
+
+ /* Don't bother trying to flush the cache if locked up */
+ spin_lock_irqsave(&h->lock, flags);
+ if (unlikely(h->lockup_detected)) {
+ spin_unlock_irqrestore(&h->lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&h->lock, flags);
flush_buf = kzalloc(4, GFP_KERNEL);
if (!flush_buf)
--
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