diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-02-11 17:11:04 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-02-17 23:08:41 +0000 |
| commit | e83b366487b5582274374f8226e489cb214ae5a6 (patch) | |
| tree | 2678fe6ad8933a6bc4440d1a2d91e4eac9ba9e4d /drivers/mmc/card | |
| parent | 7c8746a9eb287642deaad0e7c2cdf482dce5e4be (diff) | |
| download | lwn-e83b366487b5582274374f8226e489cb214ae5a6.tar.gz lwn-e83b366487b5582274374f8226e489cb214ae5a6.zip | |
Fix uses of dma_max_pfn() when converting to a limiting address
We must use a 64-bit for this, otherwise overflowed bits get lost, and
that can result in a lower than intended value set.
Fixes: 8e0cb8a1f6ac ("ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations")
Fixes: 7d35496dd982 ("ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations")
Tested-Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mmc/card')
| -rw-r--r-- | drivers/mmc/card/queue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 357bbc54fe4b..3e049c13429c 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -197,7 +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 = dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT; + limit = (u64)dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT; mq->card = card; mq->queue = blk_init_queue(mmc_request_fn, lock); |