linux-kernel - [PATCH] EDAC: i5100_edac: Fix error handling code in i5100_init

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Message-Id: <20200826121437.31606-1-dinghao.liu@zju.edu.cn>
Date:   Wed, 26 Aug 2020 20:14:37 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rrichter@...vell.com>,
        Niklas Söderlund <niklas.soderlund@...csson.com>,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] EDAC: i5100_edac: Fix error handling code in i5100_init_one

When pci_get_device_func() fails, we don't need to execute
pci_dev_put(). But mci should be freed to prevent memleak.
When pci_enable_device() fails, we don't need to disable
einj either.

Fixes: 52608ba205461 ("i5100_edac: probe for device 19 function 0")
Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/edac/i5100_edac.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index 191aa7c19ded..410bbe55cd3f 100644
--- a/drivers/edac/i5100_edac.c
+++ b/drivers/edac/i5100_edac.c
@@ -1061,13 +1061,13 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 				    PCI_DEVICE_ID_INTEL_5100_19, 0);
 	if (!einj) {
 		ret = -ENODEV;
-		goto bail_einj;
+		goto bail_free;
 	}
 
 	rc = pci_enable_device(einj);
 	if (rc < 0) {
 		ret = rc;
-		goto bail_disable_einj;
+		goto bail_einj;
 	}
 
 
@@ -1136,14 +1136,14 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 bail_scrub:
 	priv->scrub_enable = 0;
 	cancel_delayed_work_sync(&(priv->i5100_scrubbing));
-	edac_mc_free(mci);
-
-bail_disable_einj:
 	pci_disable_device(einj);
 
 bail_einj:
 	pci_dev_put(einj);
 
+bail_free:
+	edac_mc_free(mci);
+
 bail_disable_ch1:
 	pci_disable_device(ch1mm);
 
-- 
2.17.1