diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0201-drm-panel-rpi-touchscreen-propagate-errors-in-rpi_to.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0201-drm-panel-rpi-touchscreen-propagate-errors-in-rpi_to.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0201-drm-panel-rpi-touchscreen-propagate-errors-in-rpi_to.patch b/target/linux/brcm2708/patches-4.14/950-0201-drm-panel-rpi-touchscreen-propagate-errors-in-rpi_to.patch new file mode 100644 index 0000000000..923cdf2439 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0201-drm-panel-rpi-touchscreen-propagate-errors-in-rpi_to.patch @@ -0,0 +1,32 @@ +From 5659b5b9d46a236f53217e6686209863960442e3 Mon Sep 17 00:00:00 2001 +From: Dan Carpenter <dan.carpenter@oracle.com> +Date: Fri, 20 Oct 2017 03:28:45 +0300 +Subject: [PATCH 201/454] drm/panel: rpi-touchscreen: propagate errors in + rpi_touchscreen_i2c_read() + +There is one caller which checks whether rpi_touchscreen_i2c_read() +returns negative error codes. Currently it can't because negative +error codes are truncated to u8, but that's easy to fix if we change the +type to int. + +Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") +Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> +Signed-off-by: Eric Anholt <eric@anholt.net> +Link: https://patchwork.freedesktop.org/patch/msgid/20171020002845.kar2wg7gqxg7tzqi@mwanda +Reviewed-by: Eric Anholt <eric@anholt.net> +(cherry picked from commit 85b4587f8e94143bafb8b6a4003a5187b9a8753d) +--- + drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c ++++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +@@ -243,7 +243,7 @@ static struct rpi_touchscreen *panel_to_ + return container_of(panel, struct rpi_touchscreen, base); + } + +-static u8 rpi_touchscreen_i2c_read(struct rpi_touchscreen *ts, u8 reg) ++static int rpi_touchscreen_i2c_read(struct rpi_touchscreen *ts, u8 reg) + { + return i2c_smbus_read_byte_data(ts->bridge_i2c, reg); + } |