From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Arvind Yadav To: mturquette@baylibre.com, sboyd@codeaurora.org, heiko@sntech.de Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Arvind Yadav Subject: [v.1] clk:clk-rockchip:-of_iomap failed to remap then abort clock initialization. Date: Sat, 13 Aug 2016 20:56:18 +0530 Message-Id: <1471101978-1881-1-git-send-email-arvind.yadav.cs@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: -check return of 'of_iomap'.if It's falied to remap then abort. -Unmap a region obtained by remap. iounmap frees the mapping when failed to allocate the memory. Signed-off-by: Arvind Yadav --- drivers/clk/rockchip/clk-rockchip.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clk/rockchip/clk-rockchip.c b/drivers/clk/rockchip/clk-rockchip.c index 4cf838d5..2c9bb81 100644 --- a/drivers/clk/rockchip/clk-rockchip.c +++ b/drivers/clk/rockchip/clk-rockchip.c @@ -49,14 +49,19 @@ static void __init rk2928_gate_clk_init(struct device_node *node) } reg = of_iomap(node, 0); + if (!reg) + return; clk_data = kzalloc(sizeof(struct clk_onecell_data), GFP_KERNEL); - if (!clk_data) + if (!clk_data) { + iounmap(reg); return; + } clk_data->clks = kzalloc(qty * sizeof(struct clk *), GFP_KERNEL); if (!clk_data->clks) { kfree(clk_data); + iounmap(reg); return; } -- 2.7.4