From: trix@redhat.com
To: b.zolnierkie@samsung.com, jhubbard@nvidia.com, sam@ravnborg.org,
daniel.vetter@ffwll.ch, gustavo@embeddedor.com, arnd@arndb.de,
jani.nikula@intel.com
Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
linux-kernel@vger.kernel.org, Tom Rix <trix@redhat.com>
Subject: [PATCH] video: fbdev: pvr2fb: initialize variables
Date: Mon, 20 Jul 2020 12:18:45 -0700 [thread overview]
Message-ID: <20200720191845.20115-1-trix@redhat.com> (raw)
From: Tom Rix <trix@redhat.com>
clang static analysis reports this repesentative error
pvr2fb.c:1049:2: warning: 1st function call argument
is an uninitialized value [core.CallAndMessage]
if (*cable_arg)
^~~~~~~~~~~~~~~
Problem is that cable_arg depends on the input loop to
set the cable_arg[0]. If it does not, then some random
value from the stack is used.
A similar problem exists for output_arg.
So initialize cable_arg and output_arg.
Signed-off-by: Tom Rix <trix@redhat.com>
---
drivers/video/fbdev/pvr2fb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index 2d9f69b93392..f4add36cb5f4 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -1028,6 +1028,8 @@ static int __init pvr2fb_setup(char *options)
if (!options || !*options)
return 0;
+ cable_arg[0] = output_arg[0] = 0;
+
while ((this_opt = strsep(&options, ","))) {
if (!*this_opt)
continue;
--
2.18.1
next reply other threads:[~2020-07-20 19:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 19:18 trix [this message]
2020-07-20 19:27 ` [PATCH] video: fbdev: pvr2fb: initialize variables Arnd Bergmann
2020-08-03 19:44 ` Sam Ravnborg
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