* [PATCH] scsi: ufs: make ufshcd_print_trs() consider UFSHCD_QUIRK_PRDT_BYTE_GRAN
@ 2020-08-26 2:10 Eric Biggers
2020-09-09 2:09 ` Martin K. Petersen
0 siblings, 1 reply; 2+ messages in thread
From: Eric Biggers @ 2020-08-26 2:10 UTC (permalink / raw)
To: linux-scsi, Avri Altman, Alim Akhtar; +Cc: Kiwoong Kim
From: Eric Biggers <ebiggers@google.com>
Fix ufshcd_print_trs() to consider UFSHCD_QUIRK_PRDT_BYTE_GRAN when
using utp_transfer_req_desc::prd_table_length, so that it doesn't treat
the number of bytes as the number of entries.
Originally from Kiwoong Kim
(https://lkml.kernel.org/r/20200218233115.8185-1-kwmad.kim@samsung.com).
Fixes: 26f968d7de82 ("scsi: ufs: Introduce UFSHCD_QUIRK_PRDT_BYTE_GRAN quirk")
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
drivers/scsi/ufs/ufshcd.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 1d157ff58d817..316b861305eae 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -474,6 +474,9 @@ void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
prdt_length = le16_to_cpu(
lrbp->utr_descriptor_ptr->prd_table_length);
+ if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
+ prdt_length /= sizeof(struct ufshcd_sg_entry);
+
dev_err(hba->dev,
"UPIU[%d] - PRDT - %d entries phys@0x%llx\n",
tag, prdt_length,
--
2.28.0
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2020-08-26 2:10 [PATCH] scsi: ufs: make ufshcd_print_trs() consider UFSHCD_QUIRK_PRDT_BYTE_GRAN Eric Biggers
2020-09-09 2:09 ` Martin K. Petersen
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