6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Yingliang yangyingliang@huawei.com
[ Upstream commit f8fd0968eff52cf092c0d517d17507ea2f6e5ea5 ]
mipi_dsi_device_register_full() never returns NULL pointer, it will return ERR_PTR() when it fails, so replace the check with IS_ERR().
Fixes: 623a3531e9cf ("drm/panel: Add driver for Novatek NT35950 DSI DriverIC panels") Signed-off-by: Yang Yingliang yangyingliang@huawei.com Reviewed-by: Neil Armstrong neil.armstrong@linaro.org Link: https://lore.kernel.org/r/20241029123957.1588-1-yangyingliang@huaweicloud.co... Signed-off-by: Neil Armstrong neil.armstrong@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20241029123957.1588-1-yangying... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/panel/panel-novatek-nt35950.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt35950.c b/drivers/gpu/drm/panel/panel-novatek-nt35950.c index ec2780be74d1..a92a7cd697f4 100644 --- a/drivers/gpu/drm/panel/panel-novatek-nt35950.c +++ b/drivers/gpu/drm/panel/panel-novatek-nt35950.c @@ -577,9 +577,9 @@ static int nt35950_probe(struct mipi_dsi_device *dsi) return dev_err_probe(dev, -EPROBE_DEFER, "Cannot get secondary DSI host\n");
nt->dsi[1] = mipi_dsi_device_register_full(dsi_r_host, info); - if (!nt->dsi[1]) { + if (IS_ERR(nt->dsi[1])) { dev_err(dev, "Cannot get secondary DSI node\n"); - return -ENODEV; + return PTR_ERR(nt->dsi[1]); } num_dsis++; }