shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

FROMLIST: ufs: fix a bug on printing PRDT

Browse Source 
In some architectures, an unit of PRDTO and PRDTL
in UFSHCI spec assume bytes, not double word specified
in the spec. W/o this patch, when the driver executes
this, kernel panic occurres because of abnormal accesses.

Bug: 149797634
Link: https://lore.kernel.org/linux-scsi/20200218224307.8017-1-kwmad.kim@samsung.com/
Change-Id: I58ffa07535df8011b8d357135b80030833e725f9
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Kiwoong Kim
2020-02-19 10:16:33 +09:00
committed by Greg Kroah-Hartman
parent bb6f25851f
commit 8ec7bddd87
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/ufs/ufshcd.c
View File

@@ -464,8 +464,11 @@ void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
ufshcd_hex_dump("UPIU RSP: ", lrbp->ucd_rsp_ptr,
sizeof(struct utp_upiu_rsp));
prdt_length = le16_to_cpu(
lrbp->utr_descriptor_ptr->prd_table_length);
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,