From 7a051e8de3010c2f5f52e0bf305ef96c1f1f19d5 Mon Sep 17 00:00:00 2001
From: Jaejoong Kim <climbbb.kim@gmail.com>
Date: Wed, 4 Jul 2018 13:51:27 +0900
Subject: [PATCH] usb: gadget: storage: Add error handling for no memory

fsg_common_set_num_buffers() may fail due to ENOMEM. So add
error handling for fail case.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Jaejoong Kim <climbbb.kim@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---
 drivers/usb/gadget/function/f_mass_storage.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index acecd13dcbd9..1b580eb3f78f 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -3308,7 +3308,9 @@ static ssize_t fsg_opts_num_buffers_store(struct config_item *item,
 	if (ret)
 		goto end;
 
-	fsg_common_set_num_buffers(opts->common, num);
+	ret = fsg_common_set_num_buffers(opts->common, num);
+	if (ret)
+		goto end;
 	ret = len;
 
 end: