Make sure the sdhost driver doesn't use requests bigger than SWIOTLB can handle. Signed-off-by: Stefan Wahren <wahrenst@xxxxxxx> --- drivers/mmc/host/bcm2835.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c index 7e0d3a4..7ec0d95 100644 --- a/drivers/mmc/host/bcm2835.c +++ b/drivers/mmc/host/bcm2835.c @@ -1314,7 +1314,7 @@ static int bcm2835_add_host(struct bcm2835_host *host) } mmc->max_segs = 128; - mmc->max_req_size = 524288; + mmc->max_req_size = min_t(size_t, 524288, dma_max_mapping_size(dev)); mmc->max_seg_size = mmc->max_req_size; mmc->max_blk_size = 1024; mmc->max_blk_count = 65535; -- 2.7.4
