From: SongJingyi <u201912584@hust.edu.cn>
Date: Fri, 24 Mar 2023 03:14:06 +0000 (+0800)
Subject: ptp_qoriq: fix memory leak in probe()
X-Git-Tag: v6.6.17~5221^2~30
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f33642224e38d7e0d59336e10e7b4e370b1c4506;p=platform%2Fkernel%2Flinux-rpi.git

ptp_qoriq: fix memory leak in probe()

Smatch complains that:
drivers/ptp/ptp_qoriq.c ptp_qoriq_probe()
warn: 'base' from ioremap() not released.

Fix this by revising the parameter from 'ptp_qoriq->base' to 'base'.
This is only a bug if ptp_qoriq_init() returns on the
first -ENODEV error path.
For other error paths ptp_qoriq->base and base are the same.
And this change makes the code more readable.

Fixes: 7f4399ba405b ("ptp_qoriq: fix NULL access if ptp dt node missing")
Signed-off-by: SongJingyi <u201912584@hust.edu.cn>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Link: https://lore.kernel.org/r/20230324031406.1895159-1-u201912584@hust.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index 6153016..350154e 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -637,7 +637,7 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 	return 0;
 
 no_clock:
-	iounmap(ptp_qoriq->base);
+	iounmap(base);
 no_ioremap:
 	release_resource(ptp_qoriq->rsrc);
 no_resource: