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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-08-22 18:01:13 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-05 16:52:08 -0700 |
| commit | a651684c100d47b34acb815d56c0c258565296dc (patch) | |
| tree | 5cad8beb6faafd0eec74fc77590397521b8585f6 /drivers/usb/renesas_usbhs | |
| parent | 3735ba8db8e6ea22ad3ff524328926d8d780a884 (diff) | |
| download | linux-a651684c100d47b34acb815d56c0c258565296dc.tar.gz linux-a651684c100d47b34acb815d56c0c258565296dc.tar.bz2 linux-a651684c100d47b34acb815d56c0c258565296dc.zip | |
usb: renesas_usbhs: fixup DMA transport data alignment
renesas_usbhs dma can transport 8byte alignment data, not 4byte.
This patch fixup it.
Reported-by: Sugnan Prabhu S <sugnan.prabhu@renesasmobile.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/renesas_usbhs')
| -rw-r--r-- | drivers/usb/renesas_usbhs/fifo.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index ecd173032fd4..143c4e9e1be4 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -818,7 +818,7 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done) usbhs_pipe_is_dcp(pipe)) goto usbhsf_pio_prepare_push; - if (len % 4) /* 32bit alignment */ + if (len & 0x7) /* 8byte alignment */ goto usbhsf_pio_prepare_push; if ((uintptr_t)(pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */ @@ -905,7 +905,7 @@ static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done) /* use PIO if packet is less than pio_dma_border */ len = usbhsf_fifo_rcv_len(priv, fifo); len = min(pkt->length - pkt->actual, len); - if (len % 4) /* 32bit alignment */ + if (len & 0x7) /* 8byte alignment */ goto usbhsf_pio_prepare_pop_unselect; if (len < usbhs_get_dparam(priv, pio_dma_border)) |