driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7BNF8 CVE: NA
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When the FIO is running and the dump is triggered continuously, some SATA I/Os fail to be returned to the upper layer due to the setting of HISI_SAS_REJECT_CMD_BIT. The SCSI layer invokes the error processing thread. However, sas_ata_hard_reset() also fails to be reset due to the setting of HISI_SAS_REJECT_CMD_BIT. As a result, the device is disabled. Call scsi_block_requests() and wait command complete before setting HISI_SAS_REJECT_CMD_BIT to avoid SATA I/O failures.
Signed-off-by: Yihang Li liyihang9@huawei.com Signed-off-by: xiabing xiabing12@h-partners.com --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 8fcca9af507b..c89b30a89735 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -3074,21 +3074,24 @@ static const struct hisi_sas_debugfs_reg debugfs_ras_reg = {
static void debugfs_snapshot_prepare_v3_hw(struct hisi_hba *hisi_hba) { - set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); - - hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0); + struct Scsi_Host *shost = hisi_hba->shost;
+ scsi_block_requests(shost); wait_cmds_complete_timeout_v3_hw(hisi_hba, 100, 5000); - + set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); hisi_sas_sync_irqs(hisi_hba); + hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0); }
static void debugfs_snapshot_restore_v3_hw(struct hisi_hba *hisi_hba) { + struct Scsi_Host *shost = hisi_hba->shost; + hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, (u32)((1ULL << hisi_hba->queue_count) - 1));
clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); + scsi_unblock_requests(shost); }
static void read_iost_itct_cache_v3_hw(struct hisi_hba *hisi_hba,