Messages in this thread Patch in this message | | | From | Jiri Slaby <> | Subject | [PATCH 3.12 032/124] usb: renesas_usbhs: Fix fifo unclear in usbhsf_prepare_pop | Date | Tue, 28 Jul 2015 11:42:46 +0200 |
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From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
3.12-stable review patch. If anyone has any objections, please let me know.
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commit e73d42f15f90614538edeb5d4102f847105f86f2 upstream.
This patch fixes an issue for control write. When usbhsf_prepare_pop() is called after this driver called a gadget setup function, this controller doesn't receive the control write data. So, this patch adds a code to clear the fifo for control write in usbhsf_prepare_pop().
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- drivers/usb/renesas_usbhs/fifo.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 45b94019aec8..47848da64084 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -585,6 +585,8 @@ struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = { static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done) { struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); if (usbhs_pipe_is_busy(pipe)) return 0; @@ -595,6 +597,9 @@ static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done) usbhs_pipe_data_sequence(pipe, pkt->sequence); pkt->sequence = -1; /* -1 sequence will be ignored */ + if (usbhs_pipe_is_dcp(pipe)) + usbhsf_fifo_clear(pipe, fifo); + usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); usbhs_pipe_enable(pipe); usbhsf_rx_irq_ctrl(pipe, 1); -- 2.4.6
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