sdio: check that addresses are within the address space

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index c8fa095a4488..4eb7825fd1a7 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -76,6 +76,10 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
         BUG_ON(!card);
         BUG_ON(fn > 7);
 
+        /* sanity check */
+        if (addr & ~0x1FFFF)
+                return -EINVAL;
+
         memset(&cmd, 0, sizeof(struct mmc_command));
 
         cmd.opcode = SD_IO_RW_DIRECT;
@@ -125,6 +129,10 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
         WARN_ON(blocks == 0);
         WARN_ON(blksz == 0);
 
+        /* sanity check */
+        if (addr & ~0x1FFFF)
+                return -EINVAL;
+
         memset(&mrq, 0, sizeof(struct mmc_request));
         memset(&cmd, 0, sizeof(struct mmc_command));
         memset(&data, 0, sizeof(struct mmc_data));