greybus: es1: allow the debug log to be stopped

If you write 0 to the debugfs file, the log will stop being updated.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/staging/greybus/es1.c b/drivers/staging/greybus/es1.c
index 53d2d47..8aad4fb 100644 (file)
--- a/drivers/staging/greybus/es1.c
+++ b/drivers/staging/greybus/es1.c
@@ -592,14 +592,12 @@ static ssize_t apb1_log_enable_write(struct file *f, const char __user *buf,
        if (retval)
                return retval;
 
-       if (enable) {
+       if (enable)
                usb_log_enable(es1);
-               retval = count;
-       } else {
-               retval = -EINVAL;
-       }
+       else
+               usb_log_disable(es1);
 
-       return retval;
+       return count;
 }
 
 static const struct file_operations apb1_log_enable_fops = {