[PATCH AUTOSEL 5.11 14/52] platform/x86: amd-pmc: put device on error paths

[PATCH AUTOSEL 5.11 14/52] platform/x86: amd-pmc: put device on error paths

[Sasha Levin]

From: Pan Bian <bianpan2016@163.com>

[ Upstream commit 745ed17a04f966406c8c27c8f992544336c06013 ]

Put the PCI device rdev on error paths to fix potential reference count
leaks.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Link: https://lore.kernel.org/r/20210121045005.73342-1-bianpan2016@163.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/platform/x86/amd-pmc.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
index ef8342572463..b9da58ee9b1e 100644
--- a/drivers/platform/x86/amd-pmc.c
+++ b/drivers/platform/x86/amd-pmc.c
@@ -210,31 +210,39 @@ static int amd_pmc_probe(struct platform_device *pdev)
 	dev->dev = &pdev->dev;
 
 	rdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0, 0));
-	if (!rdev || !pci_match_id(pmc_pci_ids, rdev))
+	if (!rdev || !pci_match_id(pmc_pci_ids, rdev)) {
+		pci_dev_put(rdev);
 		return -ENODEV;
+	}
 
 	dev->cpu_id = rdev->device;
 	err = pci_write_config_dword(rdev, AMD_PMC_SMU_INDEX_ADDRESS, AMD_PMC_BASE_ADDR_LO);
 	if (err) {
 		dev_err(dev->dev, "error writing to 0x%x\n", AMD_PMC_SMU_INDEX_ADDRESS);
+		pci_dev_put(rdev);
 		return pcibios_err_to_errno(err);
 	}
 
 	err = pci_read_config_dword(rdev, AMD_PMC_SMU_INDEX_DATA, &val);
-	if (err)
+	if (err) {
+		pci_dev_put(rdev);
 		return pcibios_err_to_errno(err);
+	}
 
 	base_addr_lo = val & AMD_PMC_BASE_ADDR_HI_MASK;
 
 	err = pci_write_config_dword(rdev, AMD_PMC_SMU_INDEX_ADDRESS, AMD_PMC_BASE_ADDR_HI);
 	if (err) {
 		dev_err(dev->dev, "error writing to 0x%x\n", AMD_PMC_SMU_INDEX_ADDRESS);
+		pci_dev_put(rdev);
 		return pcibios_err_to_errno(err);
 	}
 
 	err = pci_read_config_dword(rdev, AMD_PMC_SMU_INDEX_DATA, &val);
-	if (err)
+	if (err) {
+		pci_dev_put(rdev);
 		return pcibios_err_to_errno(err);
+	}
 
 	base_addr_hi = val & AMD_PMC_BASE_ADDR_LO_MASK;
 	pci_dev_put(rdev);
-- 
2.30.1

[PATCH AUTOSEL 5.11 15/52] Platform: OLPC: Fix probe error handling

[Sasha Levin]

From: Lubomir Rintel <lkundrak@v3.sk>

[ Upstream commit cec551ea0d41c679ed11d758e1a386e20285b29d ]

Reset ec_priv if probe ends unsuccessfully.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210126073740.10232-2-lkundrak@v3.sk
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/platform/olpc/olpc-ec.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c
index f64b82824db2..2db7113383fd 100644
--- a/drivers/platform/olpc/olpc-ec.c
+++ b/drivers/platform/olpc/olpc-ec.c
@@ -426,11 +426,8 @@ static int olpc_ec_probe(struct platform_device *pdev)
 
 	/* get the EC revision */
 	err = olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, &ec->version, 1);
-	if (err) {
-		ec_priv = NULL;
-		kfree(ec);
-		return err;
-	}
+	if (err)
+		goto error;
 
 	config.dev = pdev->dev.parent;
 	config.driver_data = ec;
@@ -440,12 +437,16 @@ static int olpc_ec_probe(struct platform_device *pdev)
 	if (IS_ERR(ec->dcon_rdev)) {
 		dev_err(&pdev->dev, "failed to register DCON regulator\n");
 		err = PTR_ERR(ec->dcon_rdev);
-		kfree(ec);
-		return err;
+		goto error;
 	}
 
 	ec->dbgfs_dir = olpc_ec_setup_debugfs();
 
+	return 0;
+
+error:
+	ec_priv = NULL;
+	kfree(ec);
 	return err;
 }
 
-- 
2.30.1