[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>

diff --git a/arch/arm/mach-msm/smd.c b/arch/arm/mach-msm/smd.c
index 64d1232..78031c0 100644 (file)
--- 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;