[PATCH 6.1 0935/1146] HID: amd_sfh: Add missing check for dma_alloc_coherent

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From: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>

[ Upstream commit 53ffa6a9f83b2170c60591da1ead8791d5a42e81 ]

Add check for the return value of the dma_alloc_coherent since
it may return NULL pointer if allocation fails.

Fixes: 4b2c53d93a4b ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Acked-by: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221220024921.21992-1-jiasheng@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/hid/amd-sfh-hid/amd_sfh_client.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_client.c b/drivers/hid/amd-sfh-hid/amd_sfh_client.c
index 8275bba63611..ab125f79408f 100644
--- a/drivers/hid/amd-sfh-hid/amd_sfh_client.c
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_client.c
@@ -237,6 +237,10 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
 		in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
 								  &cl_data->sensor_dma_addr[i],
 								  GFP_KERNEL);
+		if (!in_data->sensor_virt_addr[i]) {
+			rc = -ENOMEM;
+			goto cleanup;
+		}
 		cl_data->sensor_sts[i] = SENSOR_DISABLED;
 		cl_data->sensor_requested_cnt[i] = 0;
 		cl_data->cur_hid_dev = i;
-- 
2.35.1






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