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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-04-26 12:03:04 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-05-10 12:29:18 -0400 |
| commit | 6689dfac00ef3118f88d5b06e1f1d13899b79997 (patch) | |
| tree | 52d6622bc3145f61585513fe6f24736e8ba5e077 /drivers/ata | |
| parent | a7e6de544c5c238a06935c96d27151432c94d2e6 (diff) | |
| download | linux-6689dfac00ef3118f88d5b06e1f1d13899b79997.tar.gz | |
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.c | 8 |
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 = { |