HID: amd_sfh: Use devm_kzalloc() instead of kzalloc()

Replace kzalloc with devm_kzalloc in driver initialization sequence. The
allocation can be tied to the lifetime of the amd_sfh driver. This cleans
up an exit & error paths, since the objects does not need to be
explicitly freed anymore.

Fixes: 4b2c53d93a4b ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_client.c b/drivers/hid/amd-sfh-hid/amd_sfh_client.c
index 2ab38b7..d04d6bd 100644 (file)
--- a/drivers/hid/amd-sfh-hid/amd_sfh_client.c
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_client.c
@@ -142,7 +142,7 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
        int rc, i;
 
        dev = &privdata->pdev->dev;
-       cl_data = kzalloc(sizeof(*cl_data), GFP_KERNEL);
+       cl_data = devm_kzalloc(dev, sizeof(*cl_data), GFP_KERNEL);
        if (!cl_data)
                return -ENOMEM;
 
@@ -175,12 +175,12 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
                        rc = -EINVAL;
                        goto cleanup;
                }
-               cl_data->feature_report[i] = kzalloc(feature_report_size, GFP_KERNEL);
+               cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);
                if (!cl_data->feature_report[i]) {
                        rc = -ENOMEM;
                        goto cleanup;
                }
-               cl_data->input_report[i] = kzalloc(input_report_size, GFP_KERNEL);
+               cl_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);
                if (!cl_data->input_report[i]) {
                        rc = -ENOMEM;
                        goto cleanup;
@@ -189,7 +189,8 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
                info.sensor_idx = cl_idx;
                info.dma_address = cl_data->sensor_dma_addr[i];
 
-               cl_data->report_descr[i] = kzalloc(cl_data->report_descr_sz[i], GFP_KERNEL);
+               cl_data->report_descr[i] =
+                       devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);
                if (!cl_data->report_descr[i]) {
                        rc = -ENOMEM;
                        goto cleanup;
@@ -214,11 +215,11 @@ cleanup:
                                          cl_data->sensor_virt_addr[i],
                                          cl_data->sensor_dma_addr[i]);
                }
-               kfree(cl_data->feature_report[i]);
-               kfree(cl_data->input_report[i]);
-               kfree(cl_data->report_descr[i]);
+               devm_kfree(dev, cl_data->feature_report[i]);
+               devm_kfree(dev, cl_data->input_report[i]);
+               devm_kfree(dev, cl_data->report_descr[i]);
        }
-       kfree(cl_data);
+       devm_kfree(dev, cl_data);
        return rc;
 }
 
@@ -241,6 +242,5 @@ int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
                                          cl_data->sensor_dma_addr[i]);
                }
        }
-       kfree(cl_data);
        return 0;
 }

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_hid.c b/drivers/hid/amd-sfh-hid/amd_sfh_hid.c
index 4f98948..5ad1e7a 100644 (file)
--- a/drivers/hid/amd-sfh-hid/amd_sfh_hid.c
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_hid.c
@@ -162,9 +162,6 @@ void amdtp_hid_remove(struct amdtp_cl_data *cli_data)
        int i;
 
        for (i = 0; i < cli_data->num_hid_devices; ++i) {
-               kfree(cli_data->feature_report[i]);
-               kfree(cli_data->input_report[i]);
-               kfree(cli_data->report_descr[i]);
                if (cli_data->hid_sensor_hubs[i]) {
                        kfree(cli_data->hid_sensor_hubs[i]->driver_data);
                        hid_destroy_device(cli_data->hid_sensor_hubs[i]);