This is a note to let you know that I've just added the patch titled
usb: gadget: f_fs: do not set cancel function on synchronous
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 4088acf1e845aba35f30fb91dee10649edbd0e84 Mon Sep 17 00:00:00 2001
From: Rui Miguel Silva <rui.silva@xxxxxxxxxx>
Date: Mon, 18 May 2015 16:02:07 +0100
Subject: 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@xxxxxxxxxxxxxxx> # v4.0+
Acked-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Rui Miguel Silva <rui.silva@xxxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/gadget/function/f_fs.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 45b8c8b338df..6e7be91e6097 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -924,7 +924,8 @@ static ssize_t ffs_epfile_write_iter(struct kiocb *kiocb, struct iov_iter *from)
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 @@ static ssize_t ffs_epfile_read_iter(struct kiocb *kiocb, struct iov_iter *to)
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)
--
2.4.5
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