Messages in this thread Patch in this message | | | From | Ondrej Zary <> | Subject | [PATCH] wd719x: remove dma_cache_sync call | Date | Wed, 26 Nov 2014 21:37:57 +0100 |
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dma_cache_sync() call breaks build on some architectures and Arnd Bergmann said: > dma_cache_sync only makes sense with buffers allocated through > dma_alloc_noncoherent(), which this one is not. I suspect we can just > remove the call to dma_cache_sync here, in particular since the > buffer is passed to the device next, and dma_map_single has > already done all the necessary synchronization.
Remove dma_cache_sync call to fix build on other architectures. Driver still works fine on x86 without that.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> --- drivers/scsi/wd719x.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/scsi/wd719x.c b/drivers/scsi/wd719x.c index 23bb5a3..170f228 100644 --- a/drivers/scsi/wd719x.c +++ b/drivers/scsi/wd719x.c @@ -243,8 +243,6 @@ static int wd719x_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) scb->sense_buf_length = SCSI_SENSE_BUFFERSIZE; cmd->SCp.dma_handle = dma_map_single(&wd->pdev->dev, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); - dma_cache_sync(&wd->pdev->dev, cmd->sense_buffer, - SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); scb->sense_buf = cpu_to_le32(cmd->SCp.dma_handle); /* request autosense */ -- Ondrej Zary
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