Commit 342f39a6 authored May 20, 2015 by Rui Miguel Silva Committed by Felipe Balbi May 26, 2015

usb: gadget: f_fs: fix check in read operation



when copying to iter the size can be different then the iov count,
the check for full iov is wrong and make any read on request which
is not the exactly size of iov to return -EFAULT.

So, just check the success of the copy.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent da96cfc1

drivers/usb/gadget/function/f_fs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -846,7 +846,7 @@ static ssize_t ffs_epfile_io(struct file file, struct ffs_io_data io_data)
		ret = ep->status;
		if (io_data->read && ret > 0) {
		ret = copy_to_iter(data, ret, &io_data->data);
		if (unlikely(iov_iter_count(&io_data->data)))
		if (!ret)
		ret = -EFAULT;
		}
		}