Hi
Am 01.07.25 um 12:49 schrieb Greg Kroah-Hartman:
The vkms driver does not need to create a platform device, as there is
no real platform resources associated it, it only did so because it was
simple to do that in order to get a device to use for resource
management of drm resources. Change the driver to use the faux device
instead as this is NOT a real platform device.
Tested-by: Louis Chauvet <louis.chau...@bootlin.com>
Reviewed-by: Louis Chauvet <louis.chau...@bootlin.com>
Reviewed-by: Thomas Zimmermann <tzimmerm...@suse.de>
Cc: Haneen Mohammed <hamohammed...@gmail.com>
Cc: Simona Vetter <sim...@ffwll.ch>
Cc: Melissa Wen <melissa....@gmail.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Maxime Ripard <mrip...@kernel.org>
Cc: David Airlie <airl...@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Lyude Paul <ly...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
v5: - rebased against 6.16-rc4
- added reviewed-by and tested-by lines
- was somehow dropped from drm trees, resending to make sure it
isn't lost
Also see my comment in the vgem change. The patches will go in soon
after "drm/gem-shmem: Do not map s/g table by default". [1] Thanks for
the update.
Best regards
Thomas
[1] https://patchwork.freedesktop.org/series/150968/
v4: - first version of the patch, was part of a larger patch series that
has been mostly all applied to the tree.
drivers/gpu/drm/vkms/vkms_drv.c | 28 ++++++++++++++--------------
drivers/gpu/drm/vkms/vkms_drv.h | 4 ++--
2 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index a24d1655f7b8..e8472d9b6e3b 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -10,7 +10,7 @@
*/
#include <linux/module.h>
-#include <linux/platform_device.h>
+#include <linux/device/faux.h>
#include <linux/dma-mapping.h>
#include <drm/clients/drm_client_setup.h>
@@ -149,27 +149,27 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev)
static int vkms_create(struct vkms_config *config)
{
int ret;
- struct platform_device *pdev;
+ struct faux_device *fdev;
struct vkms_device *vkms_device;
const char *dev_name;
dev_name = vkms_config_get_device_name(config);
- pdev = platform_device_register_simple(dev_name, -1, NULL, 0);
- if (IS_ERR(pdev))
- return PTR_ERR(pdev);
+ fdev = faux_device_create(dev_name, NULL, NULL);
+ if (!fdev)
+ return -ENODEV;
- if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
+ if (!devres_open_group(&fdev->dev, NULL, GFP_KERNEL)) {
ret = -ENOMEM;
goto out_unregister;
}
- vkms_device = devm_drm_dev_alloc(&pdev->dev, &vkms_driver,
+ vkms_device = devm_drm_dev_alloc(&fdev->dev, &vkms_driver,
struct vkms_device, drm);
if (IS_ERR(vkms_device)) {
ret = PTR_ERR(vkms_device);
goto out_devres;
}
- vkms_device->platform = pdev;
+ vkms_device->faux_dev = fdev;
vkms_device->config = config;
config->dev = vkms_device;
@@ -203,9 +203,9 @@ static int vkms_create(struct vkms_config *config)
return 0;
out_devres:
- devres_release_group(&pdev->dev, NULL);
+ devres_release_group(&fdev->dev, NULL);
out_unregister:
- platform_device_unregister(pdev);
+ faux_device_destroy(fdev);
return ret;
}
@@ -231,19 +231,19 @@ static int __init vkms_init(void)
static void vkms_destroy(struct vkms_config *config)
{
- struct platform_device *pdev;
+ struct faux_device *fdev;
if (!config->dev) {
DRM_INFO("vkms_device is NULL.\n");
return;
}
- pdev = config->dev->platform;
+ fdev = config->dev->faux_dev;
drm_dev_unregister(&config->dev->drm);
drm_atomic_helper_shutdown(&config->dev->drm);
- devres_release_group(&pdev->dev, NULL);
- platform_device_unregister(pdev);
+ devres_release_group(&fdev->dev, NULL);
+ faux_device_destroy(fdev);
config->dev = NULL;
}
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index a74a7fc3a056..5a46016e1890 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -197,13 +197,13 @@ struct vkms_config;
* struct vkms_device - Description of a VKMS device
*
* @drm - Base device in DRM
- * @platform - Associated platform device
+ * @faux_dev - Associated faux device
* @output - Configuration and sub-components of the VKMS device
* @config: Configuration used in this VKMS device
*/
struct vkms_device {
struct drm_device drm;
- struct platform_device *platform;
+ struct faux_device *faux_dev;
const struct vkms_config *config;
};
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
