[PATCH 107/115] usb: renesas_usbhs: care buff alignment when dma handler

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From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 drivers/usb/renesas_usbhs/fifo.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 237e8b1..912ce62 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -642,6 +642,9 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
 	if (len % 4) /* 32bit alignment */
 		goto usbhsf_pio_prepare_push;
 
+	if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
+		goto usbhsf_pio_prepare_push;
+
 	/* get enable DMA fifo */
 	fifo = usbhsf_get_dma_fifo(priv, pkt);
 	if (!fifo)
@@ -716,6 +719,9 @@ static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done)
 	if (!fifo)
 		goto usbhsf_pio_prepare_pop;
 
+	if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
+		goto usbhsf_pio_prepare_pop;
+
 	ret = usbhsf_fifo_select(pipe, fifo, 0);
 	if (ret < 0)
 		goto usbhsf_pio_prepare_pop;
-- 
1.7.6

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