dri-devel.lists.freedesktop.org archive mirror
 help / color / mirror / Atom feed
From: Randy Dunlap <rdunlap@infradead.org>
To: linux-kernel@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Damien Lespiau <damien.lespiau@intel.com>,
	Randy Dunlap <rdunlap@infradead.org>,
	dri-devel@lists.freedesktop.org,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm: i915: fix build when ACPI is disabled and BACKLIGHT=m
Date: Mon, 26 Apr 2021 11:35:16 -0700	[thread overview]
Message-ID: <20210426183516.18957-1-rdunlap@infradead.org> (raw)

When CONFIG_DRM_I915=y, CONFIG_ACPI is not set, and
CONFIG_BACKLIGHT_CLASS_DEVICE=m, not due to I915 config,
there are build errors trying to reference backlight_device_{un}register().

Changing the use of IS_ENABLED() to IS_REACHABLE() in intel_panel.[ch]
fixes this.

ld: drivers/gpu/drm/i915/display/intel_panel.o: in function `intel_backlight_device_register':
intel_panel.c:(.text+0x2ec1): undefined reference to `backlight_device_register'
ld: drivers/gpu/drm/i915/display/intel_panel.o: in function `intel_backlight_device_unregister':
intel_panel.c:(.text+0x2f93): undefined reference to `backlight_device_unregister'

ld: drivers/gpu/drm/i915/display/intel_panel.o: in function `intel_backlight_device_register':
intel_panel.c:(.text+0x2ec1): undefined reference to `backlight_device_register'
ld: drivers/gpu/drm/i915/display/intel_panel.o: in function `intel_backlight_device_unregister':
intel_panel.c:(.text+0x2f93): undefined reference to `backlight_device_unregister'

Fixes: 912e8b12eedb ("drm/i915: register backlight device also when backlight class is a module")
Fixes: 44c1220a441c ("drm/i915: extract intel_panel.h from intel_drv.h")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Damien Lespiau <damien.lespiau@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
Found in linux-next but applies to mainline (5.12).

 drivers/gpu/drm/i915/display/intel_panel.c |    2 +-
 drivers/gpu/drm/i915/display/intel_panel.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20210426.orig/drivers/gpu/drm/i915/display/intel_panel.c
+++ linux-next-20210426/drivers/gpu/drm/i915/display/intel_panel.c
@@ -1254,7 +1254,7 @@ void intel_panel_enable_backlight(const
 	mutex_unlock(&dev_priv->backlight_lock);
 }
 
-#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
+#if IS_REACHABLE(CONFIG_BACKLIGHT_CLASS_DEVICE)
 static u32 intel_panel_get_backlight(struct intel_connector *connector)
 {
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
--- linux-next-20210426.orig/drivers/gpu/drm/i915/display/intel_panel.h
+++ linux-next-20210426/drivers/gpu/drm/i915/display/intel_panel.h
@@ -54,7 +54,7 @@ u32 intel_panel_invert_pwm_level(struct
 u32 intel_panel_backlight_level_to_pwm(struct intel_connector *connector, u32 level);
 u32 intel_panel_backlight_level_from_pwm(struct intel_connector *connector, u32 val);
 
-#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
+#if IS_REACHABLE(CONFIG_BACKLIGHT_CLASS_DEVICE)
 int intel_backlight_device_register(struct intel_connector *connector);
 void intel_backlight_device_unregister(struct intel_connector *connector);
 #else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

             reply	other threads:[~2021-04-26 18:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-26 18:35 Randy Dunlap [this message]
2021-04-27  8:03 ` [PATCH] drm: i915: fix build when ACPI is disabled and BACKLIGHT=m Jani Nikula
2021-04-27 15:31   ` Randy Dunlap

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210426183516.18957-1-rdunlap@infradead.org \
    --to=rdunlap@infradead.org \
    --cc=damien.lespiau@intel.com \
    --cc=daniel.vetter@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=jani.nikula@intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rodrigo.vivi@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).