From 8c49a77ca451541938f90008f419fca965b76b72 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Fri, 18 Oct 2013 17:12:35 -0500 Subject: rsxx: Fix possible kernel panic with invalid config. This patch fixes a possible Kernel Panic on driver load if the configuration on the card is messed up or not yet set. The driver could possible give a 32 bit unsigned all Fs to the kernel as the device's block size. Now we only write the block size to the kernel if the configuration from the card is valid. Also, driver version is being updated. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/dev.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/block/rsxx/dev.c') diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c index d7af441880be..2284f5d3a54a 100644 --- 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); -- cgit v1.2.3