From d862b13bc8cbab9692fbe0ef44c40d0488b81af1 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Wed, 11 Aug 2010 14:17:52 -0700 Subject: [PATCH] memstick: fix hangs on unexpected device removal in mspro_blk mspro_block_remove() is called from detect thread that first calls the mspro_block_stop(), which stops the request queue. If we call del_gendisk() with the queue stopped we get a deadlock. Signed-off-by: Maxim Levitsky Cc: Alex Dubov Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/memstick/core/mspro_block.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c index aa5ac6efd9b9..d3f1a087eced 100644 --- a/drivers/memstick/core/mspro_block.c +++ b/drivers/memstick/core/mspro_block.c @@ -1339,13 +1339,14 @@ static void mspro_block_remove(struct memstick_dev *card) struct mspro_block_data *msb = memstick_get_drvdata(card); unsigned long flags; - del_gendisk(msb->disk); - dev_dbg(&card->dev, "mspro block remove\n"); spin_lock_irqsave(&msb->q_lock, flags); msb->eject = 1; blk_start_queue(msb->queue); spin_unlock_irqrestore(&msb->q_lock, flags); + del_gendisk(msb->disk); + dev_dbg(&card->dev, "mspro block remove\n"); + blk_cleanup_queue(msb->queue); msb->queue = NULL;