Use the proper API to query the max mapping size instead of guessing
it based on swiotlb internals.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/mmc/host/sdhci.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 646823ddd31715..2d73407ee52ec7 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -20,7 +20,6 @@
#include <linux/slab.h>
#include <linux/scatterlist.h>
#include <linux/sizes.h>
-#include <linux/swiotlb.h>
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
@@ -4582,12 +4581,8 @@ int sdhci_setup_host(struct sdhci_host *host)
mmc->max_segs = SDHCI_MAX_SEGS;
} else if (host->flags & SDHCI_USE_SDMA) {
mmc->max_segs = 1;
- if (swiotlb_max_segment()) {
- unsigned int max_req_size = (1 << IO_TLB_SHIFT) *
- IO_TLB_SEGSIZE;
- mmc->max_req_size = min(mmc->max_req_size,
- max_req_size);
- }
+ mmc->max_req_size = min_t(size_t, mmc->max_req_size,
+ dma_max_mapping_size(mmc_dev(mmc)));
} else { /* PIO */
mmc->max_segs = SDHCI_MAX_SEGS;
}
--
2.29.2
