From e863d68e4881b080267ea2a6f97dfc658f0ad4fb Mon Sep 17 00:00:00 2001 From: Scott Teel Date: Tue, 18 Feb 2014 13:57:05 -0600 Subject: [SCSI] hpsa: rescan devices on ioaccel2 error Allow driver to schedule a rescan whenever a request fails on the ioaccel2 path. This eliminates the possibility of driver getting stuck in non-ioaccel mode. IOaccel mode (HP SSD Smart Path) is disabled by driver upon error detection. Driver relied on idea that request would be retried through normal path, and a subsequent error would occur on that path, and be processed by controller firmware. As part of that process, controller disables ioaccel mode and later reinstates it, signalling driver to change modes. In some error cases, the error will not duplicate on the standard path, so the driver could get stuck in non-ioaccel mode. To avoid that, we allow driver to request a rescan during the next run of the rescan thread. Signed-off-by: Scott Teel Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- drivers/scsi/hpsa.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/scsi/hpsa.h') diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 1d3340dbe310..2e7521fdc344 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -182,6 +182,7 @@ struct ctlr_info { #define HPSATMF_LOG_QRY_ASYNC (1 << 25) u32 events; int acciopath_status; + int drv_req_rescan; /* flag for driver to request rescan event */ }; #define HPSA_ABORT_MSG 0 #define HPSA_DEVICE_RESET_MSG 1 -- cgit v1.2.3-59-g8ed1b