linux-kernel - [PATCH] gpu: host1x: Fix error handling

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Message-Id: <20170410202922.17665-1-christophe.jaillet@wanadoo.fr>
Date:   Mon, 10 Apr 2017 22:29:22 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     thierry.reding@...il.com
Cc:     dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] gpu: host1x: Fix error handling

If 'devm_reset_control_get' returns an error, then we erroneously return
success because error code is taken from 'host->clk' instead of 
'host->rst'.

Fixes: b386c6b73ac6 ("gpu: host1x: Support module reset")

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/gpu/host1x/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index f05ebb14fa63..ac65f52850a6 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -172,7 +172,7 @@ static int host1x_probe(struct platform_device *pdev)
 
 	host->rst = devm_reset_control_get(&pdev->dev, "host1x");
 	if (IS_ERR(host->rst)) {
-		err = PTR_ERR(host->clk);
+		err = PTR_ERR(host->rst);
 		dev_err(&pdev->dev, "failed to get reset: %d\n", err);
 		return err;
 	}
-- 
2.11.0