From ed486daad27afdcb24cee4ea0b1c9f44281e74fc Mon Sep 17 00:00:00 2001 From: "Matthew R. Ochs" Date: Wed, 21 Oct 2015 15:14:24 -0500 Subject: cxlflash: Correct behavior in device reset handler following EEH When the device reset handler is entered while a reset operation is taking place, the handler exits without actually sending a reset (TMF) to the targeted device. This behavior is incorrect as the device is not reset. Further complicating matters is the fact that a success is returned even when the TMF was not sent. To fix, the state is rechecked after coming out of the reset state. When the state is normal, a TMF will be sent out. Signed-off-by: Matthew R. Ochs Signed-off-by: Manoj N. Kumar Reviewed-by: Brian King Reviewed-by: Tomas Henzl Signed-off-by: James Bottomley diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index d0b9972..89bd4c3 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -1920,6 +1920,7 @@ static int cxlflash_eh_device_reset_handler(struct scsi_cmnd *scp) get_unaligned_be32(&((u32 *)scp->cmnd)[2]), get_unaligned_be32(&((u32 *)scp->cmnd)[3])); +retry: switch (cfg->state) { case STATE_NORMAL: rcr = send_tmf(afu, scp, TMF_LUN_RESET); @@ -1928,9 +1929,7 @@ static int cxlflash_eh_device_reset_handler(struct scsi_cmnd *scp) break; case STATE_RESET: wait_event(cfg->reset_waitq, cfg->state != STATE_RESET); - if (cfg->state == STATE_NORMAL) - break; - /* fall through */ + goto retry; default: rc = FAILED; break; -- cgit v0.10.2