From 6689dfac00ef3118f88d5b06e1f1d13899b79997 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 26 Apr 2016 12:03:04 +0300 Subject: 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 Tested-by: Christian Lamparter Signed-off-by: Andy Shevchenko Signed-off-by: Tejun Heo --- drivers/ata/sata_dwc_460ex.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/ata') 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 = { -- cgit v1.2.3