linux-kernel - [PATCH 4.9 200/212] clk: clk-atlas6: fix return value check in atlas6_clk

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Date:   Thu, 20 Aug 2020 11:22:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Xu Wang <vulab@...as.ac.cn>,
        Barry Song <baohua@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 200/212] clk: clk-atlas6: fix return value check in atlas6_clk_init()

From: Xu Wang <vulab@...as.ac.cn>

[ Upstream commit 12b90b40854a8461a02ef19f6f4474cc88d64b66 ]

In case of error, the function clk_register() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().

Signed-off-by: Xu Wang <vulab@...as.ac.cn>
Link: https://lore.kernel.org/r/20200713032143.21362-1-vulab@iscas.ac.cn
Acked-by: Barry Song <baohua@...nel.org>
Fixes: 7bf21bc81f28 ("clk: sirf: re-arch to make the codes support both prima2 and atlas6")
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/sirf/clk-atlas6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/sirf/clk-atlas6.c b/drivers/clk/sirf/clk-atlas6.c
index 665fa681b2e1e..1e6bdf22c3b64 100644
--- a/drivers/clk/sirf/clk-atlas6.c
+++ b/drivers/clk/sirf/clk-atlas6.c
@@ -136,7 +136,7 @@ static void __init atlas6_clk_init(struct device_node *np)
 
 	for (i = pll1; i < maxclk; i++) {
 		atlas6_clks[i] = clk_register(NULL, atlas6_clk_hw_array[i]);
-		BUG_ON(!atlas6_clks[i]);
+		BUG_ON(IS_ERR(atlas6_clks[i]));
 	}
 	clk_register_clkdev(atlas6_clks[cpu], NULL, "cpu");
 	clk_register_clkdev(atlas6_clks[io],  NULL, "io");
-- 
2.25.1