From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Thu, 10 Mar 2022 08:02:57 +0000 (+0800)
Subject: clk: imx: Add check for kcalloc
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ed713e2bc093239ccd380c2ce8ae9e4162f5c037;p=linux.git

clk: imx: Add check for kcalloc

As the potential failure of the kcalloc(),
it should be better to check it in order to
avoid the dereference of the NULL pointer.

Fixes: 379c9a24cc23 ("clk: imx: Fix reparenting of UARTs not associated with stdout")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/20220310080257.1988412-1-jiasheng@iscas.ac.cn
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
---

diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c
index 4bd6ad060eea5..5582f18dd632f 100644
--- a/drivers/clk/imx/clk.c
+++ b/drivers/clk/imx/clk.c
@@ -176,6 +176,8 @@ void imx_register_uart_clocks(unsigned int clk_count)
 		int i;
 
 		imx_uart_clocks = kcalloc(clk_count, sizeof(struct clk *), GFP_KERNEL);
+		if (!imx_uart_clocks)
+			return;
 
 		if (!of_stdout)
 			return;