Commit 203c8018 authored Jun 05, 2008 by Ben Collins Committed by Linus Torvalds Jun 05, 2008

mmc: Fix crash in mmc_block on 64-bit



Fairly simple. "dev_use" was being allocated as a zero length array
because of bad math on 64-bit systems, causing a crash in
find_first_zero_bit(). One-liner follows:

Signed-off-by: Ben Collins <ben.collins@canonical.com>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent b2ab26ab

drivers/mmc/card/block.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -46,7 +46,7 @@
	#define MMC_SHIFT 3		#define MMC_SHIFT 3
	#define MMC_NUM_MINORS (256 >> MMC_SHIFT)		#define MMC_NUM_MINORS (256 >> MMC_SHIFT)

	static unsigned long dev_use[MMC_NUM_MINORS/(8*sizeof(unsigned long))];		static DECLARE_BITMAP(dev_use, MMC_NUM_MINORS);

	/*		/*
	* There is one mmc_blk_data per slot.		* There is one mmc_blk_data per slot.