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* [PATCH] bus: fsl-mc: Fix test for end of loop
@ 2021-02-01 12:28 Dan Carpenter
  2021-02-02 12:36 ` Ioana Ciornei
  2021-02-08 14:18 ` Ioana Ciornei
  0 siblings, 2 replies; 5+ messages in thread
From: Dan Carpenter @ 2021-02-01 12:28 UTC (permalink / raw)
  To: Stuart Yoder, Ioana Ciornei
  Cc: Laurentiu Tudor, linux-kernel, kernel-janitors

The "desc" pointer can't possibly be NULL here.  If we can't find the
correct "desc" then tt points to the last element of the
fsl_mc_accepted_cmds[] array.  Fix this by testing if
"i == FSL_MC_NUM_ACCEPTED_CMDS" instead.

Fixes: 2cf1e703f066 ("bus: fsl-mc: add fsl-mc userspace support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/bus/fsl-mc/fsl-mc-uapi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/fsl-mc/fsl-mc-uapi.c b/drivers/bus/fsl-mc/fsl-mc-uapi.c
index eeb988c9f4bb..bdcd9d983a78 100644
--- a/drivers/bus/fsl-mc/fsl-mc-uapi.c
+++ b/drivers/bus/fsl-mc/fsl-mc-uapi.c
@@ -338,7 +338,7 @@ static int fsl_mc_command_check(struct fsl_mc_device *mc_dev,
 		if ((cmdid & desc->cmdid_mask) == desc->cmdid_value)
 			break;
 	}
-	if (!desc) {
+	if (i == FSL_MC_NUM_ACCEPTED_CMDS) {
 		dev_err(&mc_dev->dev, "MC command 0x%04x: cmdid not accepted\n", cmdid);
 		return -EACCES;
 	}
-- 
2.29.2


^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2021-02-08 18:26 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2021-02-01 12:28 [PATCH] bus: fsl-mc: Fix test for end of loop Dan Carpenter
2021-02-02 12:36 ` Ioana Ciornei
2021-02-08 14:18 ` Ioana Ciornei
2021-02-08 15:11   ` Dan Carpenter
2021-02-08 15:49     ` Ioana Ciornei

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