2022-12-19 14:42:14

by Siddh Raman Pant

[permalink] [raw]
Subject: [PATCH] drm: Replace DRM_INFO() with pr_info()

Line 536 of drm_print.h says DRM_INFO() is deprecated
in favor of pr_info().

Signed-off-by: Siddh Raman Pant <[email protected]>
---
drivers/gpu/drm/drm_client_modeset.c | 2 +-
drivers/gpu/drm/drm_connector.c | 8 ++++----
drivers/gpu/drm/drm_drv.c | 10 +++++-----
drivers/gpu/drm/drm_edid_load.c | 14 +++++++-------
drivers/gpu/drm/drm_pci.c | 2 +-
5 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
index bbc535cc50dd..2e2891614c58 100644
--- a/drivers/gpu/drm/drm_client_modeset.c
+++ b/drivers/gpu/drm/drm_client_modeset.c
@@ -335,7 +335,7 @@ static bool drm_client_target_cloned(struct drm_device *dev,
DRM_DEBUG_KMS("can clone using 1024x768\n");
return true;
}
- DRM_INFO("kms: can't enable cloning when we probably wanted to.\n");
+ pr_info("[drm] kms: can't enable cloning when we probably wanted to.\n");
return false;
}

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 61c29ce74b03..26a03b70e2c6 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -165,14 +165,14 @@ static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
return;

if (mode->force) {
- DRM_INFO("forcing %s connector %s\n", connector->name,
- drm_get_connector_force_name(mode->force));
+ pr_info("[drm] forcing %s connector %s\n", connector->name,
+ drm_get_connector_force_name(mode->force));
connector->force = mode->force;
}

if (mode->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) {
- DRM_INFO("cmdline forces connector %s panel_orientation to %d\n",
- connector->name, mode->panel_orientation);
+ pr_info("[drm] cmdline forces connector %s panel_orientation to %d\n",
+ connector->name, mode->panel_orientation);
drm_connector_set_panel_orientation(connector,
mode->panel_orientation);
}
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 203bf8d6c34c..1486df097908 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -898,11 +898,11 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
if (drm_core_check_feature(dev, DRIVER_MODESET))
drm_modeset_register_all(dev);

- DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
- driver->name, driver->major, driver->minor,
- driver->patchlevel, driver->date,
- dev->dev ? dev_name(dev->dev) : "virtual device",
- dev->primary->index);
+ pr_info("[drm] Initialized %s %d.%d.%d %s for %s on minor %d\n",
+ driver->name, driver->major, driver->minor,
+ driver->patchlevel, driver->date,
+ dev->dev ? dev_name(dev->dev) : "virtual device",
+ dev->primary->index);

goto out_unlock;

diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c
index 37d8ba3ddb46..d3cb198380c5 100644
--- a/drivers/gpu/drm/drm_edid_load.c
+++ b/drivers/gpu/drm/drm_edid_load.c
@@ -242,9 +242,9 @@ static void *edid_load(struct drm_connector *connector, const char *name,
u8 *new_edid;

edid[EDID_LENGTH-1] += edid[0x7e] - valid_extensions;
- DRM_INFO("Found %d valid extensions instead of %d in EDID data "
- "\"%s\" for connector \"%s\"\n", valid_extensions,
- edid[0x7e], name, connector_name);
+ pr_info("[drm] Found %d valid extensions instead of %d in EDID data "
+ "\"%s\" for connector \"%s\"\n", valid_extensions,
+ edid[0x7e], name, connector_name);
edid[0x7e] = valid_extensions;

new_edid = krealloc(edid, (valid_extensions + 1) * EDID_LENGTH,
@@ -253,10 +253,10 @@ static void *edid_load(struct drm_connector *connector, const char *name,
edid = new_edid;
}

- DRM_INFO("Got %s EDID base block and %d extension%s from "
- "\"%s\" for connector \"%s\"\n", (builtin >= 0) ? "built-in" :
- "external", valid_extensions, valid_extensions == 1 ? "" : "s",
- name, connector_name);
+ pr_info("[drm] Got %s EDID base block and %d extension%s from "
+ "\"%s\" for connector \"%s\"\n", (builtin >= 0) ? "built-in" :
+ "external", valid_extensions, valid_extensions == 1 ? "" : "s",
+ name, connector_name);

out:
release_firmware(fw);
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 39d35fc3a43b..94ee194ce927 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -262,7 +262,7 @@ void drm_legacy_pci_exit(const struct drm_driver *driver,
}
mutex_unlock(&legacy_dev_list_lock);
}
- DRM_INFO("Module unloaded\n");
+ pr_info("[drm] Module unloaded\n");
}
EXPORT_SYMBOL(drm_legacy_pci_exit);

--
2.35.1



2022-12-19 15:57:45

by Thomas Zimmermann

[permalink] [raw]
Subject: Re: [PATCH] drm: Replace DRM_INFO() with pr_info()

Hi

Am 19.12.22 um 15:23 schrieb Siddh Raman Pant:
> Line 536 of drm_print.h says DRM_INFO() is deprecated
> in favor of pr_info().

That's a misleading comment. DRM_INFO() is deprecated for drm_info().
pr_info() et al is only to be used of you don't have a dev pointer.

Best regards
Thomas

>
> Signed-off-by: Siddh Raman Pant <[email protected]>
> ---
> drivers/gpu/drm/drm_client_modeset.c | 2 +-
> drivers/gpu/drm/drm_connector.c | 8 ++++----
> drivers/gpu/drm/drm_drv.c | 10 +++++-----
> drivers/gpu/drm/drm_edid_load.c | 14 +++++++-------
> drivers/gpu/drm/drm_pci.c | 2 +-
> 5 files changed, 18 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
> index bbc535cc50dd..2e2891614c58 100644
> --- a/drivers/gpu/drm/drm_client_modeset.c
> +++ b/drivers/gpu/drm/drm_client_modeset.c
> @@ -335,7 +335,7 @@ static bool drm_client_target_cloned(struct drm_device *dev,
> DRM_DEBUG_KMS("can clone using 1024x768\n");
> return true;
> }
> - DRM_INFO("kms: can't enable cloning when we probably wanted to.\n");
> + pr_info("[drm] kms: can't enable cloning when we probably wanted to.\n");
> return false;
> }
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 61c29ce74b03..26a03b70e2c6 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -165,14 +165,14 @@ static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
> return;
>
> if (mode->force) {
> - DRM_INFO("forcing %s connector %s\n", connector->name,
> - drm_get_connector_force_name(mode->force));
> + pr_info("[drm] forcing %s connector %s\n", connector->name,
> + drm_get_connector_force_name(mode->force));
> connector->force = mode->force;
> }
>
> if (mode->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) {
> - DRM_INFO("cmdline forces connector %s panel_orientation to %d\n",
> - connector->name, mode->panel_orientation);
> + pr_info("[drm] cmdline forces connector %s panel_orientation to %d\n",
> + connector->name, mode->panel_orientation);
> drm_connector_set_panel_orientation(connector,
> mode->panel_orientation);
> }
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 203bf8d6c34c..1486df097908 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -898,11 +898,11 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> if (drm_core_check_feature(dev, DRIVER_MODESET))
> drm_modeset_register_all(dev);
>
> - DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
> - driver->name, driver->major, driver->minor,
> - driver->patchlevel, driver->date,
> - dev->dev ? dev_name(dev->dev) : "virtual device",
> - dev->primary->index);
> + pr_info("[drm] Initialized %s %d.%d.%d %s for %s on minor %d\n",
> + driver->name, driver->major, driver->minor,
> + driver->patchlevel, driver->date,
> + dev->dev ? dev_name(dev->dev) : "virtual device",
> + dev->primary->index);
>
> goto out_unlock;
>
> diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c
> index 37d8ba3ddb46..d3cb198380c5 100644
> --- a/drivers/gpu/drm/drm_edid_load.c
> +++ b/drivers/gpu/drm/drm_edid_load.c
> @@ -242,9 +242,9 @@ static void *edid_load(struct drm_connector *connector, const char *name,
> u8 *new_edid;
>
> edid[EDID_LENGTH-1] += edid[0x7e] - valid_extensions;
> - DRM_INFO("Found %d valid extensions instead of %d in EDID data "
> - "\"%s\" for connector \"%s\"\n", valid_extensions,
> - edid[0x7e], name, connector_name);
> + pr_info("[drm] Found %d valid extensions instead of %d in EDID data "
> + "\"%s\" for connector \"%s\"\n", valid_extensions,
> + edid[0x7e], name, connector_name);
> edid[0x7e] = valid_extensions;
>
> new_edid = krealloc(edid, (valid_extensions + 1) * EDID_LENGTH,
> @@ -253,10 +253,10 @@ static void *edid_load(struct drm_connector *connector, const char *name,
> edid = new_edid;
> }
>
> - DRM_INFO("Got %s EDID base block and %d extension%s from "
> - "\"%s\" for connector \"%s\"\n", (builtin >= 0) ? "built-in" :
> - "external", valid_extensions, valid_extensions == 1 ? "" : "s",
> - name, connector_name);
> + pr_info("[drm] Got %s EDID base block and %d extension%s from "
> + "\"%s\" for connector \"%s\"\n", (builtin >= 0) ? "built-in" :
> + "external", valid_extensions, valid_extensions == 1 ? "" : "s",
> + name, connector_name);
>
> out:
> release_firmware(fw);
> diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
> index 39d35fc3a43b..94ee194ce927 100644
> --- a/drivers/gpu/drm/drm_pci.c
> +++ b/drivers/gpu/drm/drm_pci.c
> @@ -262,7 +262,7 @@ void drm_legacy_pci_exit(const struct drm_driver *driver,
> }
> mutex_unlock(&legacy_dev_list_lock);
> }
> - DRM_INFO("Module unloaded\n");
> + pr_info("[drm] Module unloaded\n");
> }
> EXPORT_SYMBOL(drm_legacy_pci_exit);
>

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev


Attachments:
OpenPGP_signature (855.00 B)
OpenPGP digital signature

2022-12-19 15:58:16

by Siddh Raman Pant

[permalink] [raw]
Subject: Re: [PATCH] drm: Replace DRM_INFO() with pr_info()

On Mon, 19 Dec 2022 20:27:45 +0530, Thomas Zimmermann wrote:
> Hi
>
> Am 19.12.22 um 15:23 schrieb Siddh Raman Pant:
> > Line 536 of drm_print.h says DRM_INFO() is deprecated
> > in favor of pr_info().
>
> That's a misleading comment. DRM_INFO() is deprecated for drm_info().
> pr_info() et al is only to be used of you don't have a dev pointer.
>
> Best regards
> Thomas

Maybe you are confusing it with DRM_DEV_INFO? It takes the dev pointer,
and is indeed told to be deprecated in favour of drm_info() in the
comments (see line 394).

DRM_INFO is a separate macro for printing stuff, and does not take the
dev pointer. They seem to be early wrappers for printk, I guess when
pr_info did not exist. And all they do different from pr_info is to add
DRM_NAME (which seems to be just "drm") in front of the string.

Thanks,
Siddh

2022-12-19 16:46:40

by Thomas Zimmermann

[permalink] [raw]
Subject: Re: [PATCH] drm: Replace DRM_INFO() with pr_info()

Hi

Am 19.12.22 um 16:34 schrieb Siddh Raman Pant:
> On Mon, 19 Dec 2022 20:27:45 +0530, Thomas Zimmermann wrote:
>> Hi
>>
>> Am 19.12.22 um 15:23 schrieb Siddh Raman Pant:
>>> Line 536 of drm_print.h says DRM_INFO() is deprecated
>>> in favor of pr_info().
>>
>> That's a misleading comment. DRM_INFO() is deprecated for drm_info().
>> pr_info() et al is only to be used of you don't have a dev pointer.
>>
>> Best regards
>> Thomas
>
> Maybe you are confusing it with DRM_DEV_INFO? It takes the dev pointer,
> and is indeed told to be deprecated in favour of drm_info() in the
> comments (see line 394).
>
> DRM_INFO is a separate macro for printing stuff, and does not take the
> dev pointer. They seem to be early wrappers for printk, I guess when
> pr_info did not exist. And all they do different from pr_info is to add
> DRM_NAME (which seems to be just "drm") in front of the string.

The DRM_ print macros in capital letters are deprecated AFAIK. In cases
where a dev pointer is available, using drm_info() et al. is preferred
over pr_info().

In the context of your patch, you should use drm_info() in
drm_client_target_cloned(), as is gets a dev pointer as its first
argument. In most the other cases from your patch, you can get the dev
pointer from connector->dev.

The final case, drm_legacy_pci_exit(), there's no dev pointer, so you
can use pr_info() there. I'd remove '[drm]' from the string. We don't
use this much elsewhere.

Best regards
Thomas

>
> Thanks,
> Siddh

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev


Attachments:
OpenPGP_signature (855.00 B)
OpenPGP digital signature