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rsxx: Fix possible kernel panic with invalid config.

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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 <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Philip J Kelleher 2013-10-18 17:12:35 -05:00 committed by Jens Axboe
parent e35f38bf73
commit 8c49a77ca4
2 changed files with 6 additions and 4 deletions
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8
drivers/block/rsxx/dev.c
View file

@ -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);

2
drivers/block/rsxx/rsxx_priv.h
View file

@ -52,7 +52,7 @@ struct proc_cmd;
#define RS70_PCI_REV_SUPPORTED 4
#define DRIVER_NAME "rsxx"
#define DRIVER_VERSION "4.0.2.2510"
#define DRIVER_VERSION "4.0.3.2516"
/* Block size is 4096 */
#define RSXX_HW_BLK_SHIFT 12