From: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Date: Wed, 9 Oct 2024 14:47:57 +0000 (+0530)
Subject: HID: amd_sfh: Switch to device-managed dmam_alloc_coherent()
X-Git-Tag: v6.12-rc4~47^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c56f9ecb7fb6a3a90079c19eb4c8daf3bbf514b3;p=thirdparty%2Fkernel%2Flinux.git

HID: amd_sfh: Switch to device-managed dmam_alloc_coherent()

Using the device-managed version allows to simplify clean-up in probe()
error path.

Additionally, this device-managed ensures proper cleanup, which helps to
resolve memory errors, page faults, btrfs going read-only, and btrfs
disk corruption.

Fixes: 4b2c53d93a4b ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Tested-by: Chris Hixon <linux-kernel-bugs@hixontech.com>
Tested-by: Richard <hobbes1069@gmail.com>
Tested-by: Skyler <skpu@pm.me>
Reported-by: Chris Hixon <linux-kernel-bugs@hixontech.com>
Closes: https://lore.kernel.org/all/3b129b1f-8636-456a-80b4-0f6cce0eef63@hixontech.com/
Link: https://bugzilla.kernel.org/show_bug.cgi?id=219331
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
---

diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_client.c b/drivers/hid/amd-sfh-hid/amd_sfh_client.c
index 4b59687ff5d82..3438d392920fa 100644
--- a/drivers/hid/amd-sfh-hid/amd_sfh_client.c
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_client.c
@@ -236,9 +236,9 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
 	cl_data->in_data = in_data;
 
 	for (i = 0; i < cl_data->num_hid_devices; i++) {
-		in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
-								  &cl_data->sensor_dma_addr[i],
-								  GFP_KERNEL);
+		in_data->sensor_virt_addr[i] = dmam_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;
@@ -331,7 +331,6 @@ cleanup:
 int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
 {
 	struct amdtp_cl_data *cl_data = privdata->cl_data;
-	struct amd_input_data *in_data = cl_data->in_data;
 	int i, status;
 
 	for (i = 0; i < cl_data->num_hid_devices; i++) {
@@ -351,12 +350,5 @@ int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
 	cancel_delayed_work_sync(&cl_data->work_buffer);
 	amdtp_hid_remove(cl_data);
 
-	for (i = 0; i < cl_data->num_hid_devices; i++) {
-		if (in_data->sensor_virt_addr[i]) {
-			dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
-					  in_data->sensor_virt_addr[i],
-					  cl_data->sensor_dma_addr[i]);
-		}
-	}
 	return 0;
 }