linux-kernel - [PATCH] ufs: qcom: Properly clear hba priv on failure

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Message-Id: <1479502542-1136-1-git-send-email-bjorn.andersson@linaro.org>
Date:   Fri, 18 Nov 2016 12:55:42 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Vinayak Holikatti <vinholikatti@...il.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Yaniv Gardi <ygardi@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: [PATCH] ufs: qcom: Properly clear hba priv on failure

In the case where we fail to acquire the phy the hba priv will be set
already, so during cleanup ufs_qcom_setup_clocks() will dereference the
now free, but still "valid looking" pointer "host".

Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index d345434b084f..7bd88ffee47a 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1197,7 +1197,7 @@ static int ufs_qcom_init(struct ufs_hba *hba)
 	if (IS_ERR(host->generic_phy)) {
 		err = PTR_ERR(host->generic_phy);
 		dev_err(dev, "%s: PHY get failed %d\n", __func__, err);
-		goto out;
+		goto out_host_free;
 	}
 
 	err = ufs_qcom_bus_register(host);
-- 
2.5.0