linux-kernel - [PATCH 5.4 415/453] spi: atmel-quadspi: Disable clock in probe error path

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Message-Id: <20201228124957.190111003@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:50:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lukas Wunner <lukas@...ner.de>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 5.4 415/453] spi: atmel-quadspi: Disable clock in probe error path

From: Lukas Wunner <lukas@...ner.de>

commit 0e685017c7ba1a2fe9f6f1e7a9302890747d934c upstream.

If the call to of_device_get_match_data() fails on probe of the Atmel
QuadSPI driver, the clock "aq->pclk" is erroneously not unprepared and
disabled.  Fix it.

Fixes: 2e5c88887358 ("spi: atmel-quadspi: add support for sam9x60 qspi controller")
Signed-off-by: Lukas Wunner <lukas@...ner.de>
Cc: <stable@...r.kernel.org> # v5.1+
Cc: Tudor Ambarus <tudor.ambarus@...rochip.com>
Cc: Boris Brezillon <boris.brezillon@...labora.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
Link: https://lore.kernel.org/r/8f8dc2815aa97b2378528f08f923bf81e19611f0.1604874488.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/spi/atmel-quadspi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -510,7 +510,7 @@ static int atmel_qspi_probe(struct platf
 	if (!aq->caps) {
 		dev_err(&pdev->dev, "Could not retrieve QSPI caps\n");
 		err = -EINVAL;
-		goto exit;
+		goto disable_pclk;
 	}
 
 	if (aq->caps->has_qspick) {