[media] of: reserved_mem: restore old behavior when no region is defined

Change return value back to -ENODEV when no region is defined for given
device. This restores old behavior of this function, as some drivers rely
on such error code.

Fixes: 59ce4039727ef40 ("of: reserved_mem: add support for using more than
       one region for given device")

Reported-by: Liviu Dudau <[email protected]>
Signed-off-by: Marek Szyprowski <[email protected]>
Reviewed-by: Sylwester Nawrocki <[email protected]>
Reviewed-by: Liviu Dudau <[email protected]>
Acked-by: Rob Herring <[email protected]>
Reviewed-by: Sumit Semwal <[email protected]>

diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 04e4fe58fb0c82ad125a676a78882d8294969eaf..2b2291bfc38f8409271c735d21ab0a62adcd9179 100644 (file)
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -327,7 +327,7 @@ int of_reserved_mem_device_init_by_idx(struct device *dev,
 
        target = of_parse_phandle(np, "memory-region", idx);
        if (!target)
-               return -EINVAL;
+               return -ENODEV;
 
        rmem = __find_rmem(target);
        of_node_put(target);