The driver's memory regions are currently just ioremap()ed, but not reserved through a request. That's not a bug, but having the request is a little more robust. Implement the region-request through the corresponding managed devres-function. Signed-off-by: Philipp Stanner <pstanner@xxxxxxxxxx> --- drivers/gpu/drm/imx/dcss/dcss-dev.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/imx/dcss/dcss-dev.c b/drivers/gpu/drm/imx/dcss/dcss-dev.c index 4f3af0dfb344..63dbb8d9c1b0 100644 --- a/drivers/gpu/drm/imx/dcss/dcss-dev.c +++ b/drivers/gpu/drm/imx/dcss/dcss-dev.c @@ -177,10 +177,11 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output) return ERR_PTR(-ENODEV); } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "cannot get memory resource\n"); - return ERR_PTR(-EINVAL); + res = devm_platform_get_and_request_resource(pdev, IORESOURCE_MEM, + 0, "dcss"); + if (IS_ERR(res)) { + dev_err(dev, "cannot get / request memory resource\n"); + return res; } dcss = kzalloc(sizeof(*dcss), GFP_KERNEL); -- 2.43.0