rsxx: Fix possible kernel panic with invalid config.

[cascardo/linux.git] / drivers / block / rsxx / dev.c

diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c
index d7af441..2284f5d 100644 (file)
--- a/drivers/block/rsxx/dev.c
+++ b/drivers/block/rsxx/dev.c
@@ -295,13 +295,15 @@ int rsxx_setup_dev(struct rsxx_cardinfo *card)
                return -ENOMEM;
        }
 
-       blk_size = card->config.data.block_size;
+       if (card->config_valid) {
+               blk_size = card->config.data.block_size;
+               blk_queue_dma_alignment(card->queue, blk_size - 1);
+               blk_queue_logical_block_size(card->queue, blk_size);
+       }
 
        blk_queue_make_request(card->queue, rsxx_make_request);
        blk_queue_bounce_limit(card->queue, BLK_BOUNCE_ANY);
-       blk_queue_dma_alignment(card->queue, blk_size - 1);
        blk_queue_max_hw_sectors(card->queue, blkdev_max_hw_sectors);
-       blk_queue_logical_block_size(card->queue, blk_size);
        blk_queue_physical_block_size(card->queue, RSXX_HW_BLK_SIZE);
 
        queue_flag_set_unlocked(QUEUE_FLAG_NONROT, card->queue);