diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0127-panel-raspberrypi-touchscreen-Fix-NULL-deref-if-prob.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0127-panel-raspberrypi-touchscreen-Fix-NULL-deref-if-prob.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0127-panel-raspberrypi-touchscreen-Fix-NULL-deref-if-prob.patch b/target/linux/brcm2708/patches-4.14/950-0127-panel-raspberrypi-touchscreen-Fix-NULL-deref-if-prob.patch new file mode 100644 index 0000000000..37e1c63efe --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0127-panel-raspberrypi-touchscreen-Fix-NULL-deref-if-prob.patch @@ -0,0 +1,27 @@ +From d68d26f7f526fce52e71312501f3d07044a3c996 Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Wed, 12 Apr 2017 17:52:56 -0700 +Subject: [PATCH 127/454] panel-raspberrypi-touchscreen: Fix NULL deref if + probe order goes wrong. + +If the i2c driver hadn't pobed before the panel driver probes, then +the client would be NULL but we were looking for an ERR_PTR in the +error case. + +Signed-off-by: Eric Anholt <eric@anholt.net> +--- + drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 3 +++ + 1 file changed, 3 insertions(+) + +--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c ++++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +@@ -399,6 +399,9 @@ static struct i2c_client *rpi_touchscree + + of_node_put(node); + ++ if (!client) ++ return ERR_PTR(-EPROBE_DEFER); ++ + return client; + } + |