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usb: renesas_usbhs: care buff alignment when dma handler

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Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kuninori Morimoto 2011-07-03 17:42:19 -07:00 committed by Greg Kroah-Hartman
parent 8d48fdf689
commit 9a12d09765
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/renesas_usbhs/fifo.c
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@ -642,6 +642,9 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
if (len % 4) /* 32bit alignment */ if (len % 4) /* 32bit alignment */
goto usbhsf_pio_prepare_push; goto usbhsf_pio_prepare_push;
if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
goto usbhsf_pio_prepare_push;
/* get enable DMA fifo */ /* get enable DMA fifo */
fifo = usbhsf_get_dma_fifo(priv, pkt); fifo = usbhsf_get_dma_fifo(priv, pkt);
if (!fifo) if (!fifo)
@ -716,6 +719,9 @@ static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done)
if (!fifo) if (!fifo)
goto usbhsf_pio_prepare_pop; 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); ret = usbhsf_fifo_select(pipe, fifo, 0);
if (ret < 0) if (ret < 0)
goto usbhsf_pio_prepare_pop; goto usbhsf_pio_prepare_pop;