From: Bodo Stroesser Date: Thu, 9 Apr 2020 10:10:26 +0000 (+0200) Subject: scsi: target: tcmu: reset_ring should reset TCMU_DEV_BIT_BROKEN X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=066f79a5fd6d1b9a5cc57b5cd445b3e4bb68a5b2;p=linux.git scsi: target: tcmu: reset_ring should reset TCMU_DEV_BIT_BROKEN In case command ring buffer becomes inconsistent, tcmu sets device flag TCMU_DEV_BIT_BROKEN. If the bit is set, tcmu rejects new commands from LIO core with TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, and no longer processes completions from the ring. The reset_ring attribute can be used to completely clean up the command ring, so after reset_ring the ring no longer is inconsistent. Therefore reset_ring also should reset bit TCMU_DEV_BIT_BROKEN to allow normal processing. Link: https://lore.kernel.org/r/20200409101026.17872-1-bstroesser@ts.fujitsu.com Acked-by: Mike Christie Signed-off-by: Bodo Stroesser Signed-off-by: Martin K. Petersen --- diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 0b9dfa6b17bc7..f769bb1e37356 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -2073,6 +2073,7 @@ static void tcmu_reset_ring(struct tcmu_dev *udev, u8 err_level) mb->cmd_tail = 0; mb->cmd_head = 0; tcmu_flush_dcache_range(mb, sizeof(*mb)); + clear_bit(TCMU_DEV_BIT_BROKEN, &udev->flags); del_timer(&udev->cmd_timer);