diff mbox series

[26/59] drm/qxl: Use devm_drm_dev_alloc

Message ID 20200415074034.175360-27-daniel.vetter@ffwll.ch (mailing list archive)
State New, archived
Headers show
Series devm_drm_dev_alloc, v2 | expand

Commit Message

Daniel Vetter April 15, 2020, 7:40 a.m. UTC 
Also need to remove the drm_dev_put from the remove hook.

Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: spice-devel@lists.freedesktop.org
---
 drivers/gpu/drm/qxl/qxl_drv.c | 15 ++++++++-------
 drivers/gpu/drm/qxl/qxl_drv.h |  3 +--
 drivers/gpu/drm/qxl/qxl_kms.c | 12 +-----------
 3 files changed, 10 insertions(+), 20 deletions(-)

Comments

Sam Ravnborg April 24, 2020, 3:09 p.m. UTC | #1 
Hi Daniel

On Wed, Apr 15, 2020 at 09:40:01AM +0200, Daniel Vetter wrote:
> Also need to remove the drm_dev_put from the remove hook.
> 
> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Dave Airlie <airlied@redhat.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: virtualization@lists.linux-foundation.org
> Cc: spice-devel@lists.freedesktop.org
> ---
>  drivers/gpu/drm/qxl/qxl_drv.c | 15 ++++++++-------
>  drivers/gpu/drm/qxl/qxl_drv.h |  3 +--
>  drivers/gpu/drm/qxl/qxl_kms.c | 12 +-----------
>  3 files changed, 10 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
> index 09102e2efabc..6b4ae4c5fb76 100644
> --- a/drivers/gpu/drm/qxl/qxl_drv.c
> +++ b/drivers/gpu/drm/qxl/qxl_drv.c
> @@ -81,13 +81,16 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>  		return -EINVAL; /* TODO: ENODEV ? */
>  	}
>  
> -	qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
> -	if (!qdev)
> +	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
> +				  struct qxl_device, ddev);
> +	if (IS_ERR(qdev)) {
> +		pr_err("Unable to init drm dev");
>  		return -ENOMEM;
> +	}

The other patches do not add any error message when devm_drm_dev_alloc()
fails and driver core will log that driver init failed.

So the pr_err() above should be dropped.
I know it comes from qxl_device_init() but that does not make it a good
idea.

With this fixed:
Acked-by: Sam Ravnborg <sam@ravnborg.org>

>  
>  	ret = pci_enable_device(pdev);
>  	if (ret)
> -		goto free_dev;
> +		return ret;
>  
>  	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
>  	if (ret)
> @@ -101,7 +104,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>  		}
>  	}
>  
> -	ret = qxl_device_init(qdev, &qxl_driver, pdev);
> +	ret = qxl_device_init(qdev, pdev);
>  	if (ret)
>  		goto put_vga;
>  
> @@ -128,8 +131,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
>  disable_pci:
>  	pci_disable_device(pdev);
> -free_dev:
> -	kfree(qdev);
> +
>  	return ret;
>  }
>  
> @@ -155,7 +157,6 @@ qxl_pci_remove(struct pci_dev *pdev)
>  	drm_atomic_helper_shutdown(dev);
>  	if (is_vga(pdev))
>  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> -	drm_dev_put(dev);
>  }
>  
>  DEFINE_DRM_GEM_FOPS(qxl_fops);
> diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
> index 435126facc9b..86ac191d9205 100644
> --- a/drivers/gpu/drm/qxl/qxl_drv.h
> +++ b/drivers/gpu/drm/qxl/qxl_drv.h
> @@ -276,8 +276,7 @@ struct qxl_device {
>  extern const struct drm_ioctl_desc qxl_ioctls[];
>  extern int qxl_max_ioctl;
>  
> -int qxl_device_init(struct qxl_device *qdev, struct drm_driver *drv,
> -		    struct pci_dev *pdev);
> +int qxl_device_init(struct qxl_device *qdev, struct pci_dev *pdev);
>  void qxl_device_fini(struct qxl_device *qdev);
>  
>  int qxl_modeset_init(struct qxl_device *qdev);
> diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
> index 9eed1a375f24..91a34dd835d7 100644
> --- a/drivers/gpu/drm/qxl/qxl_kms.c
> +++ b/drivers/gpu/drm/qxl/qxl_kms.c
> @@ -108,21 +108,13 @@ static void qxl_gc_work(struct work_struct *work)
>  }
>  
>  int qxl_device_init(struct qxl_device *qdev,
> -		    struct drm_driver *drv,
>  		    struct pci_dev *pdev)
>  {
>  	int r, sb;
>  
> -	r = drm_dev_init(&qdev->ddev, drv, &pdev->dev);
> -	if (r) {
> -		pr_err("Unable to init drm dev");
> -		goto error;
> -	}
> -
>  	qdev->ddev.pdev = pdev;
>  	pci_set_drvdata(pdev, &qdev->ddev);
>  	qdev->ddev.dev_private = qdev;
> -	drmm_add_final_kfree(&qdev->ddev, qdev);
>  
>  	mutex_init(&qdev->gem.mutex);
>  	mutex_init(&qdev->update_area_mutex);
> @@ -138,8 +130,7 @@ int qxl_device_init(struct qxl_device *qdev,
>  	qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
>  	if (!qdev->vram_mapping) {
>  		pr_err("Unable to create vram_mapping");
> -		r = -ENOMEM;
> -		goto error;
> +		return -ENOMEM;
>  	}
>  
>  	if (pci_resource_len(pdev, 4) > 0) {
> @@ -293,7 +284,6 @@ int qxl_device_init(struct qxl_device *qdev,
>  	io_mapping_free(qdev->surface_mapping);
>  vram_mapping_free:
>  	io_mapping_free(qdev->vram_mapping);
> -error:
>  	return r;
>  }
>  
> -- 
> 2.25.1
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
Daniel Vetter April 28, 2020, 2 p.m. UTC | #2 
On Fri, Apr 24, 2020 at 05:09:11PM +0200, Sam Ravnborg wrote:
> Hi Daniel
> 
> On Wed, Apr 15, 2020 at 09:40:01AM +0200, Daniel Vetter wrote:
> > Also need to remove the drm_dev_put from the remove hook.
> > 
> > Acked-by: Gerd Hoffmann <kraxel@redhat.com>
> > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > Cc: Dave Airlie <airlied@redhat.com>
> > Cc: Gerd Hoffmann <kraxel@redhat.com>
> > Cc: virtualization@lists.linux-foundation.org
> > Cc: spice-devel@lists.freedesktop.org
> > ---
> >  drivers/gpu/drm/qxl/qxl_drv.c | 15 ++++++++-------
> >  drivers/gpu/drm/qxl/qxl_drv.h |  3 +--
> >  drivers/gpu/drm/qxl/qxl_kms.c | 12 +-----------
> >  3 files changed, 10 insertions(+), 20 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
> > index 09102e2efabc..6b4ae4c5fb76 100644
> > --- a/drivers/gpu/drm/qxl/qxl_drv.c
> > +++ b/drivers/gpu/drm/qxl/qxl_drv.c
> > @@ -81,13 +81,16 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> >  		return -EINVAL; /* TODO: ENODEV ? */
> >  	}
> >  
> > -	qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
> > -	if (!qdev)
> > +	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
> > +				  struct qxl_device, ddev);
> > +	if (IS_ERR(qdev)) {
> > +		pr_err("Unable to init drm dev");
> >  		return -ENOMEM;
> > +	}
> 
> The other patches do not add any error message when devm_drm_dev_alloc()
> fails and driver core will log that driver init failed.
> 
> So the pr_err() above should be dropped.
> I know it comes from qxl_device_init() but that does not make it a good
> idea.

Hm I know we're inconsistent here, but some drivers have error logging on
all branches, some dont. I'm just trying to go with the prevailing style.

> With this fixed:

Insisting on this or ok as-is?
-Daniel

> Acked-by: Sam Ravnborg <sam@ravnborg.org>
> 
> >  
> >  	ret = pci_enable_device(pdev);
> >  	if (ret)
> > -		goto free_dev;
> > +		return ret;
> >  
> >  	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
> >  	if (ret)
> > @@ -101,7 +104,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> >  		}
> >  	}
> >  
> > -	ret = qxl_device_init(qdev, &qxl_driver, pdev);
> > +	ret = qxl_device_init(qdev, pdev);
> >  	if (ret)
> >  		goto put_vga;
> >  
> > @@ -128,8 +131,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> >  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> >  disable_pci:
> >  	pci_disable_device(pdev);
> > -free_dev:
> > -	kfree(qdev);
> > +
> >  	return ret;
> >  }
> >  
> > @@ -155,7 +157,6 @@ qxl_pci_remove(struct pci_dev *pdev)
> >  	drm_atomic_helper_shutdown(dev);
> >  	if (is_vga(pdev))
> >  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> > -	drm_dev_put(dev);
> >  }
> >  
> >  DEFINE_DRM_GEM_FOPS(qxl_fops);
> > diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
> > index 435126facc9b..86ac191d9205 100644
> > --- a/drivers/gpu/drm/qxl/qxl_drv.h
> > +++ b/drivers/gpu/drm/qxl/qxl_drv.h
> > @@ -276,8 +276,7 @@ struct qxl_device {
> >  extern const struct drm_ioctl_desc qxl_ioctls[];
> >  extern int qxl_max_ioctl;
> >  
> > -int qxl_device_init(struct qxl_device *qdev, struct drm_driver *drv,
> > -		    struct pci_dev *pdev);
> > +int qxl_device_init(struct qxl_device *qdev, struct pci_dev *pdev);
> >  void qxl_device_fini(struct qxl_device *qdev);
> >  
> >  int qxl_modeset_init(struct qxl_device *qdev);
> > diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
> > index 9eed1a375f24..91a34dd835d7 100644
> > --- a/drivers/gpu/drm/qxl/qxl_kms.c
> > +++ b/drivers/gpu/drm/qxl/qxl_kms.c
> > @@ -108,21 +108,13 @@ static void qxl_gc_work(struct work_struct *work)
> >  }
> >  
> >  int qxl_device_init(struct qxl_device *qdev,
> > -		    struct drm_driver *drv,
> >  		    struct pci_dev *pdev)
> >  {
> >  	int r, sb;
> >  
> > -	r = drm_dev_init(&qdev->ddev, drv, &pdev->dev);
> > -	if (r) {
> > -		pr_err("Unable to init drm dev");
> > -		goto error;
> > -	}
> > -
> >  	qdev->ddev.pdev = pdev;
> >  	pci_set_drvdata(pdev, &qdev->ddev);
> >  	qdev->ddev.dev_private = qdev;
> > -	drmm_add_final_kfree(&qdev->ddev, qdev);
> >  
> >  	mutex_init(&qdev->gem.mutex);
> >  	mutex_init(&qdev->update_area_mutex);
> > @@ -138,8 +130,7 @@ int qxl_device_init(struct qxl_device *qdev,
> >  	qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
> >  	if (!qdev->vram_mapping) {
> >  		pr_err("Unable to create vram_mapping");
> > -		r = -ENOMEM;
> > -		goto error;
> > +		return -ENOMEM;
> >  	}
> >  
> >  	if (pci_resource_len(pdev, 4) > 0) {
> > @@ -293,7 +284,6 @@ int qxl_device_init(struct qxl_device *qdev,
> >  	io_mapping_free(qdev->surface_mapping);
> >  vram_mapping_free:
> >  	io_mapping_free(qdev->vram_mapping);
> > -error:
> >  	return r;
> >  }
> >  
> > -- 
> > 2.25.1
> > 
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
Sam Ravnborg April 28, 2020, 5 p.m. UTC | #3 
On Tue, Apr 28, 2020 at 04:00:11PM +0200, Daniel Vetter wrote:
> On Fri, Apr 24, 2020 at 05:09:11PM +0200, Sam Ravnborg wrote:
> > Hi Daniel
> > 
> > On Wed, Apr 15, 2020 at 09:40:01AM +0200, Daniel Vetter wrote:
> > > Also need to remove the drm_dev_put from the remove hook.
> > > 
> > > Acked-by: Gerd Hoffmann <kraxel@redhat.com>
> > > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > > Cc: Dave Airlie <airlied@redhat.com>
> > > Cc: Gerd Hoffmann <kraxel@redhat.com>
> > > Cc: virtualization@lists.linux-foundation.org
> > > Cc: spice-devel@lists.freedesktop.org
> > > ---
> > >  drivers/gpu/drm/qxl/qxl_drv.c | 15 ++++++++-------
> > >  drivers/gpu/drm/qxl/qxl_drv.h |  3 +--
> > >  drivers/gpu/drm/qxl/qxl_kms.c | 12 +-----------
> > >  3 files changed, 10 insertions(+), 20 deletions(-)
> > > 
> > > diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
> > > index 09102e2efabc..6b4ae4c5fb76 100644
> > > --- a/drivers/gpu/drm/qxl/qxl_drv.c
> > > +++ b/drivers/gpu/drm/qxl/qxl_drv.c
> > > @@ -81,13 +81,16 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > >  		return -EINVAL; /* TODO: ENODEV ? */
> > >  	}
> > >  
> > > -	qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
> > > -	if (!qdev)
> > > +	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
> > > +				  struct qxl_device, ddev);
> > > +	if (IS_ERR(qdev)) {
> > > +		pr_err("Unable to init drm dev");
> > >  		return -ENOMEM;
> > > +	}
> > 
> > The other patches do not add any error message when devm_drm_dev_alloc()
> > fails and driver core will log that driver init failed.
> > 
> > So the pr_err() above should be dropped.
> > I know it comes from qxl_device_init() but that does not make it a good
> > idea.
> 
> Hm I know we're inconsistent here, but some drivers have error logging on
> all branches, some dont. I'm just trying to go with the prevailing style.
> 
> > With this fixed:
> 
> Insisting on this or ok as-is?
OK as-is.

	Sam

> -Daniel
> 
> > Acked-by: Sam Ravnborg <sam@ravnborg.org>
> > 
> > >  
> > >  	ret = pci_enable_device(pdev);
> > >  	if (ret)
> > > -		goto free_dev;
> > > +		return ret;
> > >  
> > >  	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
> > >  	if (ret)
> > > @@ -101,7 +104,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > >  		}
> > >  	}
> > >  
> > > -	ret = qxl_device_init(qdev, &qxl_driver, pdev);
> > > +	ret = qxl_device_init(qdev, pdev);
> > >  	if (ret)
> > >  		goto put_vga;
> > >  
> > > @@ -128,8 +131,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > >  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> > >  disable_pci:
> > >  	pci_disable_device(pdev);
> > > -free_dev:
> > > -	kfree(qdev);
> > > +
> > >  	return ret;
> > >  }
> > >  
> > > @@ -155,7 +157,6 @@ qxl_pci_remove(struct pci_dev *pdev)
> > >  	drm_atomic_helper_shutdown(dev);
> > >  	if (is_vga(pdev))
> > >  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> > > -	drm_dev_put(dev);
> > >  }
> > >  
> > >  DEFINE_DRM_GEM_FOPS(qxl_fops);
> > > diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
> > > index 435126facc9b..86ac191d9205 100644
> > > --- a/drivers/gpu/drm/qxl/qxl_drv.h
> > > +++ b/drivers/gpu/drm/qxl/qxl_drv.h
> > > @@ -276,8 +276,7 @@ struct qxl_device {
> > >  extern const struct drm_ioctl_desc qxl_ioctls[];
> > >  extern int qxl_max_ioctl;
> > >  
> > > -int qxl_device_init(struct qxl_device *qdev, struct drm_driver *drv,
> > > -		    struct pci_dev *pdev);
> > > +int qxl_device_init(struct qxl_device *qdev, struct pci_dev *pdev);
> > >  void qxl_device_fini(struct qxl_device *qdev);
> > >  
> > >  int qxl_modeset_init(struct qxl_device *qdev);
> > > diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
> > > index 9eed1a375f24..91a34dd835d7 100644
> > > --- a/drivers/gpu/drm/qxl/qxl_kms.c
> > > +++ b/drivers/gpu/drm/qxl/qxl_kms.c
> > > @@ -108,21 +108,13 @@ static void qxl_gc_work(struct work_struct *work)
> > >  }
> > >  
> > >  int qxl_device_init(struct qxl_device *qdev,
> > > -		    struct drm_driver *drv,
> > >  		    struct pci_dev *pdev)
> > >  {
> > >  	int r, sb;
> > >  
> > > -	r = drm_dev_init(&qdev->ddev, drv, &pdev->dev);
> > > -	if (r) {
> > > -		pr_err("Unable to init drm dev");
> > > -		goto error;
> > > -	}
> > > -
> > >  	qdev->ddev.pdev = pdev;
> > >  	pci_set_drvdata(pdev, &qdev->ddev);
> > >  	qdev->ddev.dev_private = qdev;
> > > -	drmm_add_final_kfree(&qdev->ddev, qdev);
> > >  
> > >  	mutex_init(&qdev->gem.mutex);
> > >  	mutex_init(&qdev->update_area_mutex);
> > > @@ -138,8 +130,7 @@ int qxl_device_init(struct qxl_device *qdev,
> > >  	qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
> > >  	if (!qdev->vram_mapping) {
> > >  		pr_err("Unable to create vram_mapping");
> > > -		r = -ENOMEM;
> > > -		goto error;
> > > +		return -ENOMEM;
> > >  	}
> > >  
> > >  	if (pci_resource_len(pdev, 4) > 0) {
> > > @@ -293,7 +284,6 @@ int qxl_device_init(struct qxl_device *qdev,
> > >  	io_mapping_free(qdev->surface_mapping);
> > >  vram_mapping_free:
> > >  	io_mapping_free(qdev->vram_mapping);
> > > -error:
> > >  	return r;
> > >  }
> > >  
> > > -- 
> > > 2.25.1
> > > 
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
Daniel Vetter April 28, 2020, 6:04 p.m. UTC | #4 
On Tue, Apr 28, 2020 at 07:00:26PM +0200, Sam Ravnborg wrote:
> On Tue, Apr 28, 2020 at 04:00:11PM +0200, Daniel Vetter wrote:
> > On Fri, Apr 24, 2020 at 05:09:11PM +0200, Sam Ravnborg wrote:
> > > Hi Daniel
> > > 
> > > On Wed, Apr 15, 2020 at 09:40:01AM +0200, Daniel Vetter wrote:
> > > > Also need to remove the drm_dev_put from the remove hook.
> > > > 
> > > > Acked-by: Gerd Hoffmann <kraxel@redhat.com>
> > > > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > > > Cc: Dave Airlie <airlied@redhat.com>
> > > > Cc: Gerd Hoffmann <kraxel@redhat.com>
> > > > Cc: virtualization@lists.linux-foundation.org
> > > > Cc: spice-devel@lists.freedesktop.org
> > > > ---
> > > >  drivers/gpu/drm/qxl/qxl_drv.c | 15 ++++++++-------
> > > >  drivers/gpu/drm/qxl/qxl_drv.h |  3 +--
> > > >  drivers/gpu/drm/qxl/qxl_kms.c | 12 +-----------
> > > >  3 files changed, 10 insertions(+), 20 deletions(-)
> > > > 
> > > > diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
> > > > index 09102e2efabc..6b4ae4c5fb76 100644
> > > > --- a/drivers/gpu/drm/qxl/qxl_drv.c
> > > > +++ b/drivers/gpu/drm/qxl/qxl_drv.c
> > > > @@ -81,13 +81,16 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > > >  		return -EINVAL; /* TODO: ENODEV ? */
> > > >  	}
> > > >  
> > > > -	qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
> > > > -	if (!qdev)
> > > > +	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
> > > > +				  struct qxl_device, ddev);
> > > > +	if (IS_ERR(qdev)) {
> > > > +		pr_err("Unable to init drm dev");
> > > >  		return -ENOMEM;
> > > > +	}
> > > 
> > > The other patches do not add any error message when devm_drm_dev_alloc()
> > > fails and driver core will log that driver init failed.
> > > 
> > > So the pr_err() above should be dropped.
> > > I know it comes from qxl_device_init() but that does not make it a good
> > > idea.
> > 
> > Hm I know we're inconsistent here, but some drivers have error logging on
> > all branches, some dont. I'm just trying to go with the prevailing style.
> > 
> > > With this fixed:
> > 
> > Insisting on this or ok as-is?
> OK as-is.

Ok, merged the two qxl patches too, plus a lot of the driver conversions.

Thanks a lot to everyone who commented, reviewed and tested thus far.
-Daniel

> 
> 	Sam
> 
> > -Daniel
> > 
> > > Acked-by: Sam Ravnborg <sam@ravnborg.org>
> > > 
> > > >  
> > > >  	ret = pci_enable_device(pdev);
> > > >  	if (ret)
> > > > -		goto free_dev;
> > > > +		return ret;
> > > >  
> > > >  	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
> > > >  	if (ret)
> > > > @@ -101,7 +104,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > > >  		}
> > > >  	}
> > > >  
> > > > -	ret = qxl_device_init(qdev, &qxl_driver, pdev);
> > > > +	ret = qxl_device_init(qdev, pdev);
> > > >  	if (ret)
> > > >  		goto put_vga;
> > > >  
> > > > @@ -128,8 +131,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > > >  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> > > >  disable_pci:
> > > >  	pci_disable_device(pdev);
> > > > -free_dev:
> > > > -	kfree(qdev);
> > > > +
> > > >  	return ret;
> > > >  }
> > > >  
> > > > @@ -155,7 +157,6 @@ qxl_pci_remove(struct pci_dev *pdev)
> > > >  	drm_atomic_helper_shutdown(dev);
> > > >  	if (is_vga(pdev))
> > > >  		vga_put(pdev, VGA_RSRC_LEGACY_IO);
> > > > -	drm_dev_put(dev);
> > > >  }
> > > >  
> > > >  DEFINE_DRM_GEM_FOPS(qxl_fops);
> > > > diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
> > > > index 435126facc9b..86ac191d9205 100644
> > > > --- a/drivers/gpu/drm/qxl/qxl_drv.h
> > > > +++ b/drivers/gpu/drm/qxl/qxl_drv.h
> > > > @@ -276,8 +276,7 @@ struct qxl_device {
> > > >  extern const struct drm_ioctl_desc qxl_ioctls[];
> > > >  extern int qxl_max_ioctl;
> > > >  
> > > > -int qxl_device_init(struct qxl_device *qdev, struct drm_driver *drv,
> > > > -		    struct pci_dev *pdev);
> > > > +int qxl_device_init(struct qxl_device *qdev, struct pci_dev *pdev);
> > > >  void qxl_device_fini(struct qxl_device *qdev);
> > > >  
> > > >  int qxl_modeset_init(struct qxl_device *qdev);
> > > > diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
> > > > index 9eed1a375f24..91a34dd835d7 100644
> > > > --- a/drivers/gpu/drm/qxl/qxl_kms.c
> > > > +++ b/drivers/gpu/drm/qxl/qxl_kms.c
> > > > @@ -108,21 +108,13 @@ static void qxl_gc_work(struct work_struct *work)
> > > >  }
> > > >  
> > > >  int qxl_device_init(struct qxl_device *qdev,
> > > > -		    struct drm_driver *drv,
> > > >  		    struct pci_dev *pdev)
> > > >  {
> > > >  	int r, sb;
> > > >  
> > > > -	r = drm_dev_init(&qdev->ddev, drv, &pdev->dev);
> > > > -	if (r) {
> > > > -		pr_err("Unable to init drm dev");
> > > > -		goto error;
> > > > -	}
> > > > -
> > > >  	qdev->ddev.pdev = pdev;
> > > >  	pci_set_drvdata(pdev, &qdev->ddev);
> > > >  	qdev->ddev.dev_private = qdev;
> > > > -	drmm_add_final_kfree(&qdev->ddev, qdev);
> > > >  
> > > >  	mutex_init(&qdev->gem.mutex);
> > > >  	mutex_init(&qdev->update_area_mutex);
> > > > @@ -138,8 +130,7 @@ int qxl_device_init(struct qxl_device *qdev,
> > > >  	qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
> > > >  	if (!qdev->vram_mapping) {
> > > >  		pr_err("Unable to create vram_mapping");
> > > > -		r = -ENOMEM;
> > > > -		goto error;
> > > > +		return -ENOMEM;
> > > >  	}
> > > >  
> > > >  	if (pci_resource_len(pdev, 4) > 0) {
> > > > @@ -293,7 +284,6 @@ int qxl_device_init(struct qxl_device *qdev,
> > > >  	io_mapping_free(qdev->surface_mapping);
> > > >  vram_mapping_free:
> > > >  	io_mapping_free(qdev->vram_mapping);
> > > > -error:
> > > >  	return r;
> > > >  }
> > > >  
> > > > -- 
> > > > 2.25.1
> > > > 
> > > > _______________________________________________
> > > > dri-devel mailing list
> > > > dri-devel@lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> > -- 
> > Daniel Vetter
> > Software Engineer, Intel Corporation
> > http://blog.ffwll.ch
diff mbox series

Patch

diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
index 09102e2efabc..6b4ae4c5fb76 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.c
+++ b/drivers/gpu/drm/qxl/qxl_drv.c
@@ -81,13 +81,16 @@  qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		return -EINVAL; /* TODO: ENODEV ? */
 	}
 
-	qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
-	if (!qdev)
+	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
+				  struct qxl_device, ddev);
+	if (IS_ERR(qdev)) {
+		pr_err("Unable to init drm dev");
 		return -ENOMEM;
+	}
 
 	ret = pci_enable_device(pdev);
 	if (ret)
-		goto free_dev;
+		return ret;
 
 	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
 	if (ret)
@@ -101,7 +104,7 @@  qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		}
 	}
 
-	ret = qxl_device_init(qdev, &qxl_driver, pdev);
+	ret = qxl_device_init(qdev, pdev);
 	if (ret)
 		goto put_vga;
 
@@ -128,8 +131,7 @@  qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		vga_put(pdev, VGA_RSRC_LEGACY_IO);
 disable_pci:
 	pci_disable_device(pdev);
-free_dev:
-	kfree(qdev);
+
 	return ret;
 }
 
@@ -155,7 +157,6 @@  qxl_pci_remove(struct pci_dev *pdev)
 	drm_atomic_helper_shutdown(dev);
 	if (is_vga(pdev))
 		vga_put(pdev, VGA_RSRC_LEGACY_IO);
-	drm_dev_put(dev);
 }
 
 DEFINE_DRM_GEM_FOPS(qxl_fops);
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index 435126facc9b..86ac191d9205 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -276,8 +276,7 @@  struct qxl_device {
 extern const struct drm_ioctl_desc qxl_ioctls[];
 extern int qxl_max_ioctl;
 
-int qxl_device_init(struct qxl_device *qdev, struct drm_driver *drv,
-		    struct pci_dev *pdev);
+int qxl_device_init(struct qxl_device *qdev, struct pci_dev *pdev);
 void qxl_device_fini(struct qxl_device *qdev);
 
 int qxl_modeset_init(struct qxl_device *qdev);
diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
index 9eed1a375f24..91a34dd835d7 100644
--- a/drivers/gpu/drm/qxl/qxl_kms.c
+++ b/drivers/gpu/drm/qxl/qxl_kms.c
@@ -108,21 +108,13 @@  static void qxl_gc_work(struct work_struct *work)
 }
 
 int qxl_device_init(struct qxl_device *qdev,
-		    struct drm_driver *drv,
 		    struct pci_dev *pdev)
 {
 	int r, sb;
 
-	r = drm_dev_init(&qdev->ddev, drv, &pdev->dev);
-	if (r) {
-		pr_err("Unable to init drm dev");
-		goto error;
-	}
-
 	qdev->ddev.pdev = pdev;
 	pci_set_drvdata(pdev, &qdev->ddev);
 	qdev->ddev.dev_private = qdev;
-	drmm_add_final_kfree(&qdev->ddev, qdev);
 
 	mutex_init(&qdev->gem.mutex);
 	mutex_init(&qdev->update_area_mutex);
@@ -138,8 +130,7 @@  int qxl_device_init(struct qxl_device *qdev,
 	qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
 	if (!qdev->vram_mapping) {
 		pr_err("Unable to create vram_mapping");
-		r = -ENOMEM;
-		goto error;
+		return -ENOMEM;
 	}
 
 	if (pci_resource_len(pdev, 4) > 0) {
@@ -293,7 +284,6 @@  int qxl_device_init(struct qxl_device *qdev,
 	io_mapping_free(qdev->surface_mapping);
 vram_mapping_free:
 	io_mapping_free(qdev->vram_mapping);
-error:
 	return r;
 }