linux-kernel - [PATCH] mmc: sdhci-cadence: Fix an error handling path in sdhci_cdns

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <f61599a9ef23767c2d66e5af9c975f05ef1cec6b.1682430069.git.christophe.jaillet@wanadoo.fr>
Date:   Tue, 25 Apr 2023 15:41:26 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Brad Larson <blarson@....com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-mmc@...r.kernel.org
Subject: [PATCH] mmc: sdhci-cadence: Fix an error handling path in sdhci_cdns_probe()

If devm_reset_control_get_optional_exclusive() fails, some resources still
need to be released. So branch to the error handling path instead of
returning directly.

Fixes: aad53d4ee756 ("mmc: sdhci-cadence: Support mmc hardware reset")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/mmc/host/sdhci-cadence.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index b24aa27da50c..d2f625054689 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -540,9 +540,11 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
 
 	if (host->mmc->caps & MMC_CAP_HW_RESET) {
 		priv->rst_hw = devm_reset_control_get_optional_exclusive(dev, NULL);
-		if (IS_ERR(priv->rst_hw))
-			return dev_err_probe(mmc_dev(host->mmc), PTR_ERR(priv->rst_hw),
-					     "reset controller error\n");
+		if (IS_ERR(priv->rst_hw)) {
+			ret = dev_err_probe(mmc_dev(host->mmc), PTR_ERR(priv->rst_hw),
+					    "reset controller error\n");
+			goto free;
+		}
 		if (priv->rst_hw)
 			host->mmc_host_ops.card_hw_reset = sdhci_cdns_mmc_hw_reset;
 	}
-- 
2.34.1