diff mbox series

[1/4] amd_sfh: Fix potential NULL pointer dereference

Message ID 20210923122930.3873914-2-Basavaraj.Natikar@amd.com (mailing list archive)
State Mainlined
Commit 601e6baaa21c40292a0135963eda7d9b0afb9674
Delegated to: Jiri Kosina
Headers show
Series Fixes and updates to amd-sfh driver | expand

Commit Message

Basavaraj Natikar Sept. 23, 2021, 12:29 p.m. UTC 
The cl_data field of a privdata must be allocated and updated before
using in amd_sfh_hid_client_init() function.

Hence handling NULL pointer cl_data accordingly.

Fixes: d46ef750ed58 ("HID: amd_sfh: Fix potential NULL pointer dereference")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
---
 drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c
index 076b46251c91..f5e580f598cd 100644
--- a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c
@@ -251,21 +251,17 @@  static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
 		return rc;
 	}
 
-	rc = amd_sfh_hid_client_init(privdata);
-	if (rc)
-		return rc;
-
 	privdata->cl_data = devm_kzalloc(&pdev->dev, sizeof(struct amdtp_cl_data), GFP_KERNEL);
 	if (!privdata->cl_data)
 		return -ENOMEM;
 
-	rc = devm_add_action_or_reset(&pdev->dev, amd_mp2_pci_remove, privdata);
+	mp2_select_ops(privdata);
+
+	rc = amd_sfh_hid_client_init(privdata);
 	if (rc)
 		return rc;
 
-	mp2_select_ops(privdata);
-
-	return 0;
+	return devm_add_action_or_reset(&pdev->dev, amd_mp2_pci_remove, privdata);
 }
 
 static int __maybe_unused amd_mp2_pci_resume(struct device *dev)