linux-kernel - [PATCH AUTOSEL 4.19 3/4] ata: sata_gemini: Check clk

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Message-ID: <20240415100520.3127870-3-sashal@kernel.org>
Date: Mon, 15 Apr 2024 06:05:16 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Chen Ni <nichen@...as.ac.cn>,
	Damien Le Moal <dlemoal@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	linus.walleij@...aro.org,
	cassel@...nel.org,
	linux-ide@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 3/4] ata: sata_gemini: Check clk_enable() result

From: Chen Ni <nichen@...as.ac.cn>

[ Upstream commit e85006ae7430aef780cc4f0849692e266a102ec0 ]

The call to clk_enable() in gemini_sata_start_bridge() can fail.
Add a check to detect such failure.

Signed-off-by: Chen Ni <nichen@...as.ac.cn>
Signed-off-by: Damien Le Moal <dlemoal@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ata/sata_gemini.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/sata_gemini.c b/drivers/ata/sata_gemini.c
index 64b43943f6502..f7b4ed572ce02 100644
--- a/drivers/ata/sata_gemini.c
+++ b/drivers/ata/sata_gemini.c
@@ -200,7 +200,10 @@ int gemini_sata_start_bridge(struct sata_gemini *sg, unsigned int bridge)
 		pclk = sg->sata0_pclk;
 	else
 		pclk = sg->sata1_pclk;
-	clk_enable(pclk);
+	ret = clk_enable(pclk);
+	if (ret)
+		return ret;
+
 	msleep(10);
 
 	/* Do not keep clocking a bridge that is not online */
-- 
2.43.0