diff mbox series

[v5,4/7] scsi: ufs: Fix register dump caused sleep in atomic context

Message ID 1573798172-20534-5-git-send-email-cang@codeaurora.org (mailing list archive)
State Mainlined
Commit cddaebaf3d81584180d647e9cbda4ecbf8e8e71c
Headers show
Series UFS driver general fixes bundle 3 | expand

Commit Message

Can Guo Nov. 15, 2019, 6:09 a.m. UTC 
ufshcd_print_host_regs() can be called by interrupt handler, but it may
sleep due to ufshcd_dump_regs() allocates the dump buffer memory with flag
GFP_KERNEL. Fix it by changing GFP_KERNEL to GFP_ATMOIC.

Signed-off-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
---
 drivers/scsi/ufs/ufshcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9bc2cad..e70ec47 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -117,7 +117,7 @@  int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
 	if (offset % 4 != 0 || len % 4 != 0) /* keep readl happy */
 		return -EINVAL;
 
-	regs = kzalloc(len, GFP_KERNEL);
+	regs = kzalloc(len, GFP_ATOMIC);
 	if (!regs)
 		return -ENOMEM;