[PATCH] MIPS: ath25: check for kzalloc allocation failure

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

Currently there is no null check on a failed allocation of board_data,
and hence a null pointer dereference will occurr.  Fix this by checking
for the out of memory null pointer.

Fixes: a7473717483e ("MIPS: ath25: add board configuration detection")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 arch/mips/ath25/board.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/ath25/board.c b/arch/mips/ath25/board.c
index 9ab48ff80c1c..6d11ae581ea7 100644
--- a/arch/mips/ath25/board.c
+++ b/arch/mips/ath25/board.c
@@ -135,6 +135,8 @@ int __init ath25_find_config(phys_addr_t base, unsigned 
long size)
        }
 
        board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+       if (!board_data)
+               goto error;
        ath25_board.config = (struct ath25_boarddata *)board_data;
        memcpy_fromio(board_data, bcfg, 0x100);
        if (broken_boarddata) {
-- 
2.15.1