From: Stephen Boyd <sboyd@codeaurora.org>
Date: Wed, 15 Jul 2015 18:55:42 +0000 (-0700)
Subject: clk: ti: Check kzalloc() for failures
X-Git-Tag: firefly_0821_release~176^2~908^2~109
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f645f72d876586c4950dcd5bf516744db0aeb30b;p=firefly-linux-kernel-4.4.55.git

clk: ti: Check kzalloc() for failures

smatch reports a failure to check kzalloc() here:

drivers/clk/ti/clk.c:232
omap2_clk_provider_init() error: potential null dereference 'io'.
(kzalloc returns null)

Check for an allocation failure and return -ENOMEM.

Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---

diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index 3343bde47fe4..521e330e3046 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -227,6 +227,8 @@ int __init omap2_clk_provider_init(struct device_node *parent, int index,
 	clocks_node_ptr[index] = clocks;
 
 	io = kzalloc(sizeof(*io), GFP_KERNEL);
+	if (!io)
+		return -ENOMEM;
 
 	io->regmap = syscon;
 	io->mem = mem;