linux-kernel - [PATCH 3/4] dmaengine: ste_dma40: Remove unneeded ERROR and NULL check in ste

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Date:   Mon, 16 May 2022 16:41:38 +0800
From:   Wan Jiabing <wanjiabing@...o.com>
To:     Vinod Koul <vkoul@...nel.org>, Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Wan Jiabing <wanjiabing@...o.com>
Subject: [PATCH 3/4] dmaengine: ste_dma40: Remove unneeded ERROR and NULL check in ste_dma40

clk_put() already checks ERROR by using IS_ERR.
clk_disable_unprepare() already checks NULL by using IS_ERR_OR_NULL.
Remove unneeded NULL check for clk_ret and ERROR check for clk.

Signed-off-by: Wan Jiabing <wanjiabing@...o.com>
---
 drivers/dma/ste_dma40.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index e1827393143f..7d1bf4ae4495 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -3119,7 +3119,7 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
 	clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
 		d40_err(&pdev->dev, "No matching clock found\n");
-		goto check_prepare_enabled;
+		goto disable_unprepare;
 	}
 
 	clk_ret = clk_prepare_enable(clk);
@@ -3305,12 +3305,10 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
 	iounmap(virtbase);
  release_region:
 	release_mem_region(res->start, resource_size(res));
- check_prepare_enabled:
-	if (!clk_ret)
  disable_unprepare:
-		clk_disable_unprepare(clk);
-	if (!IS_ERR(clk))
-		clk_put(clk);
+	clk_disable_unprepare(clk);
+	clk_put(clk);
+
 	return NULL;
 }
 
-- 
2.36.1