[PATCH 5.15 519/779] HID: amd_sfh: Add NULL check for hid device

[Greg Kroah-Hartman]

From: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>

[ Upstream commit 06aa2a43c307cf4096f422dcb575e5d2913e528f ]

On removal of hid device during SFH set report may cause NULL pointer
exception. Hence add NULL check for hid device before accessing.

Fixes: 4b2c53d93a4b ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/hid/amd-sfh-hid/amd_sfh_hid.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_hid.c b/drivers/hid/amd-sfh-hid/amd_sfh_hid.c
index a4bda2ac713e..3b0615c6aecf 100644
--- a/drivers/hid/amd-sfh-hid/amd_sfh_hid.c
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_hid.c
@@ -98,11 +98,15 @@ static int amdtp_wait_for_response(struct hid_device *hid)
 
 void amdtp_hid_wakeup(struct hid_device *hid)
 {
-	struct amdtp_hid_data *hid_data = hid->driver_data;
-	struct amdtp_cl_data *cli_data = hid_data->cli_data;
+	struct amdtp_hid_data *hid_data;
+	struct amdtp_cl_data *cli_data;
 
-	cli_data->request_done[cli_data->cur_hid_dev] = true;
-	wake_up_interruptible(&hid_data->hid_wait);
+	if (hid) {
+		hid_data = hid->driver_data;
+		cli_data = hid_data->cli_data;
+		cli_data->request_done[cli_data->cur_hid_dev] = true;
+		wake_up_interruptible(&hid_data->hid_wait);
+	}
 }
 
 static struct hid_ll_driver amdtp_hid_ll_driver = {
-- 
2.35.1