drm/panel: nt37801: Fix IS_ERR() vs NULL check in probe()

The devm_drm_panel_alloc() function returns error pointers, it doesn't
return NULL.  Update the check to match.

Fixes: 4fca6849864d ("drm/panel: Add Novatek NT37801 panel driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Link: https://lore.kernel.org/r/aDCdn9r_ZAUTRpWn@stanley.mountain
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

diff --git a/drivers/gpu/drm/panel/panel-novatek-nt37801.c b/drivers/gpu/drm/panel/panel-novatek-nt37801.c
index 84d367e..d6a37d7 100644 (file)
--- a/drivers/gpu/drm/panel/panel-novatek-nt37801.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt37801.c
@@ -257,8 +257,8 @@ static int novatek_nt37801_probe(struct mipi_dsi_device *dsi)
        ctx = devm_drm_panel_alloc(dev, struct novatek_nt37801, panel,
                                   &novatek_nt37801_panel_funcs,
                                   DRM_MODE_CONNECTOR_DSI);
-       if (!ctx)
-               return -ENOMEM;
+       if (IS_ERR(ctx))
+               return PTR_ERR(ctx);
 
        ret = devm_regulator_bulk_get_const(dev,
                                            ARRAY_SIZE(novatek_nt37801_supplies),