mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
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: 2f733d6194
("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>
This commit is contained in:
parent
33b54ea110
commit
85b4587f8e
@ -221,7 +221,7 @@ static struct rpi_touchscreen *panel_to_ts(struct drm_panel *panel)
|
||||
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->i2c, reg);
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user