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@redhat.com>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240124111904.18261-3-pstanner@redhat.com
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) {
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);