From 5d806f9fc8e63d7a44e0fd1ef26a7c27efae0e51 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Fri, 3 Feb 2017 12:43:11 -0800 Subject: [PATCH] clk: sunxi-ng: Check kzalloc() for errors and cleanup error path This kzalloc() could fail. Let's bail out with -ENOMEM here instead of NULL dereferencing. That silences static checkers. We should also cleanup on the error path even though this function returning an error probably means the system won't boot. Cc: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Stephen Boyd --- drivers/clk/sunxi-ng/ccu_common.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c index 6986e11e..8a47baf 100644 --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -75,6 +75,11 @@ int sunxi_ccu_probe(struct device_node *node, void __iomem *reg, goto err_clk_unreg; reset = kzalloc(sizeof(*reset), GFP_KERNEL); + if (!reset) { + ret = -ENOMEM; + goto err_alloc_reset; + } + reset->rcdev.of_node = node; reset->rcdev.ops = &ccu_reset_ops; reset->rcdev.owner = THIS_MODULE; @@ -90,6 +95,16 @@ int sunxi_ccu_probe(struct device_node *node, void __iomem *reg, return 0; err_of_clk_unreg: + kfree(reset); +err_alloc_reset: + of_clk_del_provider(node); err_clk_unreg: + while (--i >= 0) { + struct clk_hw *hw = desc->hw_clks->hws[i]; + + if (!hw) + continue; + clk_hw_unregister(hw); + } return ret; } -- 2.7.4