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hpsa: do not ack controller events on controllers that do not support it 

Acking controller events on controllers that do not support
it can cause such controllers to lock up.

Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Stephen Cameron 2015-01-23 16:44:07 -06:00 committed by James Bottomley
parent 6f99a9160f
commit e4aa3e6ae2
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/hpsa.c
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@ -6674,6 +6674,9 @@ static void hpsa_ack_ctlr_events(struct ctlr_info *h)
int i;
char *event_type;
if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
return;
/* Ask the controller to clear the events we're handling. */
if ((h->transMethod & (CFGTBL_Trans_io_accel1
| CFGTBL_Trans_io_accel2)) &&