From: Alim Akhtar <alim.akhtar@samsung.com>
Date: Thu, 28 May 2020 06:46:50 +0530
Subject: scsi: ufs: Add quirk to disallow reset of interrupt aggregation
Git-commit: b638b5eb624bd5d0766683b6181d578f414585e9
Patch-mainline: v5.9-rc1
References: bsc#1186992
Some host controllers support interrupt aggregation but don't allow
resetting counter and timer in software.
Link: https://lore.kernel.org/r/20200528011658.71590-3-alim.akhtar@samsung.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Seungwon Jeon <essuuj@gmail.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/ufs/ufshcd.h | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -517,6 +517,12 @@ enum ufshcd_quirks {
* Clear handling for transfer/task request list is just opposite.
*/
UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6,
+
+ /*
+ * This quirk needs to be enabled if host controller doesn't allow
+ * that the interrupt aggregation timer and counter are reset by s/w.
+ */
+ UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7,
};
/**