usb: gadget: f_fs: do not set cancel function on synchronous {read,write}
do not try to set cancel function in synchronous operations in
ffs_epfile_{read,write}_iter.
Cc: <stable@vger.kernel.org> # v4.0+
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 45b8c8b..6e7be91 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -924,7 +924,8 @@
kiocb->private = p;
- kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
+ if (p->aio)
+ kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
res = ffs_epfile_io(kiocb->ki_filp, p);
if (res == -EIOCBQUEUED)
@@ -968,7 +969,8 @@
kiocb->private = p;
- kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
+ if (p->aio)
+ kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
res = ffs_epfile_io(kiocb->ki_filp, p);
if (res == -EIOCBQUEUED)