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authorAndy Whitcroft <apw@shadowen.org>2007-05-06 14:49:33 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:12:53 -0700
commit543691a6cd70b606dd9bed5e77b120c5d9c5c506 (patch)
tree91d1033d6699e28393c7a2cae63727ac22db92ac /mm/Makefile
parentb5637e65ee2cecd344b1f8ff750013f697d3ae16 (diff)
tty_register_driver: only allocate tty instances when defined
If device->num is zero we attempt to kmalloc() zero bytes. When SLUB is enabled this returns a null pointer and take that as an allocation failure and fail the device register. Check for no devices and avoid the allocation. [akpm: opportunistic kzalloc() conversion] Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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