diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2011-07-03 17:42:19 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-07-08 15:07:17 -0700 |
| commit | 9a12d09765b72f7e1642f36d0e3ad2ce61fd31b6 (patch) | |
| tree | 12f48117af31b1546da3658d5705b17736b56f50 /drivers/usb | |
| parent | 8d48fdf689fed2c73c493e5146d1463689246442 (diff) | |
usb: renesas_usbhs: care buff alignment when dma handler
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | 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 237e8b1e7027..912ce62279a6 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; |