serial: ns16550: Handle -ENOENT when requesting clock
When calling clk_get_by_index(), fall back to the legacy method of
getting the clock if -ENOENT is returned.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 765499d..29d5471 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -408,7 +408,7 @@
err = clk_get_rate(&clk);
if (!IS_ERR_VALUE(err))
plat->clock = err;
- } else if (err != -ENODEV && err != -ENOSYS) {
+ } else if (err != -ENOENT && err != -ENODEV && err != -ENOSYS) {
debug("ns16550 failed to get clock\n");
return err;
}