Commit 90393c9b authored by Philipp Stanner's avatar Philipp Stanner Committed by Laurentiu Palcu
Browse files

drm/imx/dcss: request memory region 



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: default avatarPhilipp Stanner <pstanner@redhat.com>
Reviewed-by: default avatarLaurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Signed-off-by: default avatarLaurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240124111904.18261-3-pstanner@redhat.com
parent 041261ac

drivers/gpu/drm/imx/dcss/dcss-dev.c

+7 −0
Original line number Diff line number Diff line
@@ -170,6 +170,7 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output) 
	struct resource *res;

	struct dcss_dev *dcss;

	const struct dcss_type_data *devtype;

	resource_size_t res_len;



	devtype = of_device_get_match_data(dev);

	if (!devtype) {
@@ -183,6 +184,12 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output) 
		return ERR_PTR(-EINVAL);

	}



	res_len = res->end - res->start;

	if (!devm_request_mem_region(dev, res->start, res_len, "dcss")) {

		dev_err(dev, "cannot request memory region\n");

		return ERR_PTR(-EBUSY);

	}



	dcss = kzalloc(sizeof(*dcss), GFP_KERNEL);

	if (!dcss)

		return ERR_PTR(-ENOMEM);