Commit 061d2c1d authored Jan 11, 2020 by Shubhrajyoti Datta Committed by Michal Simek Feb 04, 2020

microblaze: Prevent the overflow of the start



In case the start + cache size is more than the max int the
start overflows.
Prevent the same.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

parent 2602276d

arch/microblaze/kernel/cpu/cache.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -92,6 +92,7 @@ static inline void __disable_dcache_nomsr(void)
		#define CACHE_LOOP_LIMITS(start, end, cache_line_length, cache_size) \
		do { \
		int align = ~(cache_line_length - 1); \
		if (start < UINT_MAX - cache_size) \
		end = min(start + cache_size, end); \
		start &= align; \
		} while (0)

Admin message