From 53ffa6a9f83b2170c60591da1ead8791d5a42e81 Mon Sep 17 00:00:00 2001 From: Jiasheng Jiang Date: Tue, 20 Dec 2022 10:49:21 +0800 Subject: [PATCH] HID: amd_sfh: Add missing check for dma_alloc_coherent 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 Acked-by: Basavaraj Natikar Signed-off-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20221220024921.21992-1-jiasheng@iscas.ac.cn --- 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 8275bba6..ab125f7 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; -- 2.7.4