diff options
| author | Kiwoong Kim <[email protected]> | 2020-05-28 06:46:53 +0530 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2020-06-15 14:04:10 -0400 |
| commit | d779a6e90e189f4883ce6f900da02995fb000df5 (patch) | |
| tree | 5fdcd04eeb41a7707f40c8cb2eb315a71aad6059 | |
| parent | 26f968d7de823ba4974a8f25c8bd8ee2df6ab74b (diff) | |
scsi: ufs: Add quirk to fix abnormal ocs fatal error
Some controller like Exynos determines if FATAL ERROR (0x7) in OCS field in
UTRD occurs for values other than GOOD (0x0) in STATUS field in response
upiu as well as errors that a host controller can't cover. This patch is
to prevent from reporting command results in those cases.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Avri Altman <[email protected]>
Signed-off-by: Kiwoong Kim <[email protected]>
Signed-off-by: Alim Akhtar <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 52206d5c2ca2..e83afcc56f88 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -4819,6 +4819,12 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) /* overall command status of utrd */ ocs = ufshcd_get_tr_ocs(lrbp); + if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) { + if (be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_1) & + MASK_RSP_UPIU_RESULT) + ocs = OCS_SUCCESS; + } + switch (ocs) { case OCS_SUCCESS: result = ufshcd_get_req_rsp(lrbp->ucd_rsp_ptr); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 519a9e82ab95..84842003c7ac 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -543,6 +543,12 @@ enum ufshcd_quirks { * resolution of the values of PRDTO and PRDTL in UTRD as byte. */ UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9, + + /* + * This quirk needs to be enabled if the host controller reports + * OCS FATAL ERROR with device error through sense data + */ + UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10, }; enum ufshcd_caps { |