* [PATCH] drm/panel/raspberrypi-touchscreen: Add check for mipi_dsi_driver_register
@ 2022-06-01 2:19 Jiasheng Jiang
0 siblings, 0 replies; only message in thread
From: Jiasheng Jiang @ 2022-06-01 2:19 UTC (permalink / raw)
To: thierry.reding, sam, airlied, daniel, nsaenz, bcm-kernel-feedback-list
Cc: dri-devel, linux-rpi-kernel, linux-arm-kernel, linux-kernel,
Jiasheng Jiang
As mipi_dsi_driver_register could return error if fails,
it should be better to check the return value and return error
if fails.
Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index 145047e19394..cc90afbf4b3e 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
@@ -498,7 +498,12 @@ static struct i2c_driver rpi_touchscreen_driver = {
static int __init rpi_touchscreen_init(void)
{
- mipi_dsi_driver_register(&rpi_touchscreen_dsi_driver);
+ int ret;
+
+ ret = mipi_dsi_driver_register(&rpi_touchscreen_dsi_driver);
+ if (ret)
+ return ret;
+
return i2c_add_driver(&rpi_touchscreen_driver);
}
module_init(rpi_touchscreen_init);
--
2.25.1
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