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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-04-26 12:03:04 +0300
committerTejun Heo <tj@kernel.org>2016-05-10 19:29:18 +0300
commit6689dfac00ef3118f88d5b06e1f1d13899b79997 (patch)
tree52d6622bc3145f61585513fe6f24736e8ba5e077 /drivers/ata
parenta7e6de544c5c238a06935c96d27151432c94d2e6 (diff)
downloadlinux-6689dfac00ef3118f88d5b06e1f1d13899b79997.tar.xz
ata: sata_dwc_460ex: set dma_boundary to 0x1fff
The original code states: Make sure a LLI block is not created that will span 8K max FIS boundary. If the block spans such a FIS boundary, there is a chance that a DMA burst will cross that boundary -- this results in an error in the host controller. Since we have switched to generic DMAengine API we satisfy above by setting dma_boundary value to 0x1fff. Suggested-by: Mans Rullgard <mans@mansr.com> Tested-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/sata_dwc_460ex.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 7f953892647a..aee887350fa3 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -1151,7 +1151,13 @@ static struct scsi_host_template sata_dwc_sht = {
*/
.sg_tablesize = LIBATA_MAX_PRD,
/* .can_queue = ATA_MAX_QUEUE, */
- .dma_boundary = ATA_DMA_BOUNDARY,
+ /*
+ * Make sure a LLI block is not created that will span 8K max FIS
+ * boundary. If the block spans such a FIS boundary, there is a chance
+ * that a DMA burst will cross that boundary -- this results in an
+ * error in the host controller.
+ */
+ .dma_boundary = 0x1fff /* ATA_DMA_BOUNDARY */,
};
static struct ata_port_operations sata_dwc_ops = {