From: Dan Carpenter <dan.carpenter@oracle.com>
To: Boris Brezillon <boris.brezillon@free-electrons.com>,
Rob Herring <robh@kernel.org>
Cc: David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] drm: atmel-hlcdc: Uninitialized return in atmel_hlcdc_create_outputs()
Date: Sat, 15 Apr 2017 19:21:42 +0000 [thread overview]
Message-ID: <20170415192142.GA6416@mwanda> (raw)
It's not possible for endpoint to be zero so the test doesn't work. If
we break on the first iteration through the loop then endpoint is 1 and
"ret" is uninitialized.
Fixes: ebc944613567 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
index f987b4572d4a..65a3bd7a0c00 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
@@ -221,7 +221,8 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev,
int atmel_hlcdc_create_outputs(struct drm_device *dev)
{
struct device_node *remote;
- int ret, endpoint = 0;
+ int ret = -ENODEV;
+ int endpoint = 0;
while (true) {
/* Loop thru possible multiple connections to the output */
@@ -236,7 +237,5 @@ int atmel_hlcdc_create_outputs(struct drm_device *dev)
return ret;
}
- if (!endpoint)
- return -ENODEV;
return ret;
}
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Boris Brezillon <boris.brezillon@free-electrons.com>,
Rob Herring <robh@kernel.org>
Cc: David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] drm: atmel-hlcdc: Uninitialized return in atmel_hlcdc_create_outputs()
Date: Sat, 15 Apr 2017 22:21:42 +0300 [thread overview]
Message-ID: <20170415192142.GA6416@mwanda> (raw)
It's not possible for endpoint to be zero so the test doesn't work. If
we break on the first iteration through the loop then endpoint is 1 and
"ret" is uninitialized.
Fixes: ebc944613567 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
index f987b4572d4a..65a3bd7a0c00 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
@@ -221,7 +221,8 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev,
int atmel_hlcdc_create_outputs(struct drm_device *dev)
{
struct device_node *remote;
- int ret, endpoint = 0;
+ int ret = -ENODEV;
+ int endpoint = 0;
while (true) {
/* Loop thru possible multiple connections to the output */
@@ -236,7 +237,5 @@ int atmel_hlcdc_create_outputs(struct drm_device *dev)
return ret;
}
- if (!endpoint)
- return -ENODEV;
return ret;
}
next reply other threads:[~2017-04-15 19:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-15 19:21 Dan Carpenter [this message]
2017-04-15 19:21 ` [PATCH] drm: atmel-hlcdc: Uninitialized return in atmel_hlcdc_create_outputs() Dan Carpenter
2017-04-18 8:00 ` Boris Brezillon
2017-04-18 8:00 ` Boris Brezillon
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