usb: common: silence dubious errors

Both dr_mode and maximum-speed properties are usually optional. Drivers
will still try to fetch the properties nonetheless, which leads to error
messages, although they are no errors. Change pr_err() to pr_debug().

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index 43564c9..ee0c064 100644 (file)
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -29,7 +29,7 @@ enum usb_dr_mode usb_get_dr_mode(ofnode node)
 
        dr_mode = ofnode_read_string(node, "dr_mode");
        if (!dr_mode) {
-               pr_err("usb dr_mode not found\n");
+               pr_debug("usb dr_mode not found\n");
                return USB_DR_MODE_UNKNOWN;
        }
 
@@ -64,7 +64,7 @@ enum usb_device_speed usb_get_maximum_speed(ofnode node)
 
        max_speed = ofnode_read_string(node, "maximum-speed");
        if (!max_speed) {
-               pr_err("usb maximum-speed not found\n");
+               pr_debug("usb maximum-speed not found\n");
                return USB_SPEED_UNKNOWN;
        }