[PATCH 4.4 019/112] EDAC/i5100: Fix error handling order in i5100_init_one()

Greg Kroah-Hartman
2020-10-27T18:28:30Z

From: Dinghao Liu <dinghao.liu@zju.edu.cn>

[ Upstream commit 857a3139bd8be4f702c030c8ca06f3fd69c1741a ]

When pci_get_device_func() fails, the driver doesn't need to execute
pci_dev_put(). mci should still be freed, though, to prevent a memory
leak. When pci_enable_device() fails, the error injection PCI device
"einj" doesn't need to be disabled either.

[ bp: Massage commit message, rename label to "bail_mc_free". ]

Fixes: 52608ba205461 ("i5100_edac: probe for device 19 function 0")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200826121437.31606-1-dinghao.liu@zju.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/edac/i5100_edac.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index 40917775dca1c..59d10f48ed6ab 100644
--- a/drivers/edac/i5100_edac.c
+++ b/drivers/edac/i5100_edac.c
@@ -1075,16 +1075,15 @@ 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_mc_free;
}

rc = pci_enable_device(einj);
if (rc < 0) {
ret = rc;
- goto bail_disable_einj;
+ goto bail_einj;
}

-
mci->pdev = &pdev->dev;

priv = mci->pvt_info;
@@ -1151,14 +1150,14 @@ 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_mc_free:
+ edac_mc_free(mci);
+
bail_disable_ch1:
pci_disable_device(ch1mm);

--
2.25.1