From: Brian Swetland <swetland@google.com>
Date: Thu, 29 Jan 2009 04:25:40 +0000 (-0800)
Subject: [ARM] msm: smd: don't crash if the smd channel table doesn't exist
X-Git-Tag: firefly_0821_release~9833^2~2111^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4d4fb2660ddd2d8131ebc3314e4c648fc0f4b8dd;p=firefly-linux-kernel-4.4.55.git

[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 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;