[ARM] msm: smd: don't crash if the smd channel table doesn't exist

Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/arm/mach-msm/smd.c b/arch/arm/mach-msm/smd.c
index 64d12323995e..78031c0a6db3 100644
--- a/arch/arm/mach-msm/smd.c
+++ b/arch/arm/mach-msm/smd.c
@@ -204,7 +204,10 @@ static void smd_channel_probe_worker(struct work_struct *work)
         unsigned n;
 
         shared = smem_find(ID_CH_ALLOC_TBL, sizeof(*shared) * 64);
-
+        if (!shared) {
+                pr_err("smd: cannot find allocation table\n");
+                return;
+        }
         for (n = 0; n < 64; n++) {
                 if (smd_ch_allocated[n])
                         continue;