diff options
| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2013-07-29 17:20:15 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-31 18:49:27 +0400 |
| commit | 8e0cb8a1f6acf673ef9ab573087020ebafa8da51 (patch) | |
| tree | ca8e25ec4b7c887abba2d7d2d9a6d2a81c330cf5 /drivers | |
| parent | 7d35496dd98229cdf923238367fd3b3833fbde52 (diff) | |
| download | linux-8e0cb8a1f6acf673ef9ab573087020ebafa8da51.tar.xz | |
ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations
DMA bounce limit is the maximum direct DMA'able memory beyond which
bounce buffers has to be used to perform dma operations. MMC queue layr
relies on dma_mask but its calculation is based on max_*pfn which
don't have uniform meaning across architectures. So make use of
dma_max_pfn() which is expected to return the DMAable maximum pfn
value across architectures.
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/card/queue.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index fa9632eb63f1..357bbc54fe4b 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -15,6 +15,7 @@ #include <linux/freezer.h> #include <linux/kthread.h> #include <linux/scatterlist.h> +#include <linux/dma-mapping.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> @@ -196,7 +197,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, struct mmc_queue_req *mqrq_prev = &mq->mqrq[1]; if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask) - limit = *mmc_dev(host)->dma_mask; + limit = dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT; mq->card = card; mq->queue = blk_init_queue(mmc_request_fn, lock); |