This is a note to let you know that I've just added the patch titled
usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
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 6124607acc88fffeaadf3aacfeb3cc1304c87387 Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Date: Wed, 27 Sep 2017 18:47:12 +0900
Subject: usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
This patch fixes an issue that the driver sets the BCLR bit of
{C,Dn}FIFOCTR register to 1 even when it's non-DCP pipe and
the FRDY bit of {C,Dn}FIFOCTR register is set to 1.
Fixes: e8d548d54968 ("usb: renesas_usbhs: fifo became independent from pipe.")
Cc: <stable@xxxxxxxxxxxxxxx> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
---
drivers/usb/renesas_usbhs/fifo.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index d1af831f43eb..03cac07f57b5 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -282,11 +282,17 @@ static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ int ret = 0;
if (!usbhs_pipe_is_dcp(pipe))
- usbhsf_fifo_barrier(priv, fifo);
+ ret = usbhsf_fifo_barrier(priv, fifo);
- usbhs_write(priv, fifo->ctr, BCLR);
+ /*
+ * if non-DCP pipe, this driver should set BCLR when
+ * usbhsf_fifo_barrier() returns 0.
+ */
+ if (!ret)
+ usbhs_write(priv, fifo->ctr, BCLR);
}
static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv,
--
2.14.1