memstick: fix hangs on unexpected device removal in mspro_blk
commitff794f11b17636c14adf98459dae806c482ab8b1
authorMaxim Levitsky <maximlevitsky@gmail.com>
Wed, 11 Aug 2010 21:17:52 +0000 (11 14:17 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 26 Aug 2010 23:43:11 +0000 (26 16:43 -0700)
tree96d7d2f083b961c98041df42332e473f040dea0d
parent7db3ade7abd16f53abe927c2a467c2f38d731c33
memstick: fix hangs on unexpected device removal in mspro_blk

commit d862b13bc8cbab9692fbe0ef44c40d0488b81af1 upstream.

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 <maximlevitsky@gmail.com>
Cc: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/memstick/core/mspro_block.c