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mtd: jedec_probe: Fix crash in jedec_read_mfr()
[pandora-kernel.git]
/
drivers
/
mtd
/
chips
/
jedec_probe.c
diff --git
a/drivers/mtd/chips/jedec_probe.c
b/drivers/mtd/chips/jedec_probe.c
index
c443f52
..
88ce823
100644
(file)
--- a/
drivers/mtd/chips/jedec_probe.c
+++ b/
drivers/mtd/chips/jedec_probe.c
@@
-1888,6
+1888,8
@@
static inline u32 jedec_read_mfr(struct map_info *map, uint32_t base,
do {
uint32_t ofs = cfi_build_cmd_addr(0 + (bank << 8), map, cfi);
mask = (1 << (cfi->device_type * 8)) - 1;
+ if (ofs >= map->size)
+ return 0;
result = map_read(map, base + ofs);
bank++;
} while ((result.x[0] & mask) == CFI_MFR_CONTINUATION);