The slot->response value may not be aligned, so should be read using the appropriate kernel "unaligned" accessor.
Signed-off-by: Chris Metcalf <[email protected]> --- drivers/scsi/mvsas/mv_sas.c | 5 +++-- drivers/scsi/mvsas/mv_sas.h | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index f14665a..66aaa87 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -1858,10 +1858,11 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) } /* error info record present */ - if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) { + if (unlikely((rx_desc & RXQ_ERR) && + get_unaligned_le64((u64 *) slot->response))) { mv_dprintk("port %d slot %d rx_desc %X has error info" "%016llX.\n", slot->port->sas_port.id, slot_idx, - rx_desc, (u64)(*(u64 *)slot->response)); + rx_desc, get_unaligned_le64((u64 *)slot->response)); tstat->stat = mvs_slot_err(mvi, task, slot_idx); tstat->resp = SAS_TASK_COMPLETE; goto out; diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h index 60e2fb7..d6b19dc 100644 --- a/drivers/scsi/mvsas/mv_sas.h +++ b/drivers/scsi/mvsas/mv_sas.h @@ -39,6 +39,7 @@ #include <linux/irq.h> #include <linux/slab.h> #include <linux/vmalloc.h> +#include <asm/unaligned.h> #include <scsi/libsas.h> #include <scsi/scsi.h> #include <scsi/scsi_tcq.h> -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
