From 3163c79efa653ea9832acb8efe55efd34a5f4ae6 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Mon, 4 Jan 2016 21:28:34 +0100 Subject: [PATCH] usb: f_fs: fix ffs_epfile_io returning success on req alloc failure MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit In the AIO path, if allocating of a request failse, the function simply goes to the error_lock path whose end result is returning value of ret. However, at this point ret’s value is zero (assigned as return value from ffs_mutex_lock). Fix by adding ‘ret = -ENOMEM’ statement. Signed-off-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index d1a4a86..1384220 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -793,8 +793,10 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) if (io_data->aio) { req = usb_ep_alloc_request(ep->ep, GFP_KERNEL); - if (unlikely(!req)) + if (unlikely(!req)) { + ret = -ENOMEM; goto error_lock; + } req->buf = data; req->length = data_len; -- 2.7.4