From: Subhash Jadavani <subhashj@codeaurora.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Vinayak Holikatti <vinholikatti@gmail.com>,
"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Yaniv Gardi <ygardi@codeaurora.org>,
Vivek Gautam <vivek.gautam@codeaurora.org>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org, linux-scsi-owner@vger.kernel.org
Subject: Re: [PATCH] ufs: qcom: Properly clear hba priv on failure
Date: Sat, 19 Nov 2016 12:30:24 -0800 [thread overview]
Message-ID: <99d75f263b7b973ddbe5031d8500048c@codeaurora.org> (raw)
In-Reply-To: <1479502542-1136-1-git-send-email-bjorn.andersson@linaro.org>
On 2016-11-18 12:55, Bjorn Andersson wrote:
> 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".
host (ufs_qcom_host) was allocated with devm_kzalloc() so i am not sure
why it would be freed up before probe() returns failure.
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.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);
--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2016-11-19 20:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-18 20:55 [PATCH] ufs: qcom: Properly clear hba priv on failure Bjorn Andersson
2016-11-19 20:30 ` Subhash Jadavani [this message]
2016-11-20 6:15 ` Bjorn Andersson
2016-11-21 18:32 ` Subhash Jadavani
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