From: Todd Poynor <toddpoynor@google.com>
Date: Tue, 17 Jul 2018 20:56:47 +0000 (-0700)
Subject: staging: gasket: Return EBUSY on mapping create when already in use
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cf2865a0c70c645c50d2665ca66228872e225ed0;p=openwrt%2Fstaging%2Fblogic.git

staging: gasket: Return EBUSY on mapping create when already in use

gasket_sysfs_create_mapping() return EBUSY if sysfs mapping already in
use, as a more appropriate error code than the current return of EINVAL,
which would indicate invalid parameters.

Signed-off-by: Zhongze Hu <frankhu@chromium.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/gasket/gasket_sysfs.c b/drivers/staging/gasket/gasket_sysfs.c
index e3d770630961..dd4d3aaa57e2 100644
--- a/drivers/staging/gasket/gasket_sysfs.c
+++ b/drivers/staging/gasket/gasket_sysfs.c
@@ -194,7 +194,7 @@ int gasket_sysfs_create_mapping(
 			"0x%p.", device);
 		put_mapping(mapping);
 		mutex_unlock(&function_mutex);
-		return -EINVAL;
+		return -EBUSY;
 	}
 
 	/* Find the first empty entry in the array. */