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| author | Ingo Molnar <mingo@elte.hu> | 2010-10-14 09:11:43 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-14 09:11:46 +0200 |
| commit | ed859ed3b0f9893c6bce3708e8928341c15699b9 (patch) | |
| tree | 59c507f00bc13becb4accdd64fdc01ece08b4645 /drivers/usb/musb/musb_host.c | |
| parent | tracing/sched: Add sched_pi_setprio tracepoint (diff) | |
| parent | Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/as... (diff) | |
| download | linux-ed859ed3b0f9893c6bce3708e8928341c15699b9.tar.xz linux-ed859ed3b0f9893c6bce3708e8928341c15699b9.zip | |
Merge branch 'linus' into sched/core
Merge reason: update from -rc5 to -almost-final
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/usb/musb/musb_host.c')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 877d20b1dff9..9e65c47cc98b 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -660,6 +660,12 @@ static bool musb_tx_dma_program(struct dma_controller *dma, qh->segsize = length; + /* + * Ensure the data reaches to main memory before starting + * DMA transfer + */ + wmb(); + if (!dma->channel_program(channel, pkt_size, mode, urb->transfer_dma + offset, length)) { dma->channel_release(channel); |