[PATCH] USB: gadget: f_fs: fix error handling

[Robert Baldyga]

This patch add missing error check in ffs_func_bind() function, after
ffs_do_descs() funcion call for hs descriptors. Without this check it's
possible that the module will try dereference incorrect pointer.

Signed-off-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
---
 drivers/usb/gadget/f_fs.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 1a66c5b..fe7d532 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -2264,7 +2264,10 @@ static int ffs_func_bind(struct usb_configuration *c,
 				   data->raw_descs + ret,
 				   (sizeof data->raw_descs) - ret,
 				   __ffs_func_bind_do_descs, func);
+		if (unlikely(ret < 0))
+			goto error;
 	}
+	
 
 	/*
 	 * Now handle interface numbers allocation and interface and
-- 
1.7.9.5

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