linux-kernel - [PATCH v2] drm/i915/display: replace boilerplate code with helper macros

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210626073230.41803-1-someguy@effective-light.com>
Date:   Sat, 26 Jun 2021 03:32:27 -0400
From:   Hamza Mahfooz <someguy@...ective-light.com>
To:     linux-kernel@...r.kernel.org
Cc:     Sean Paul <sean@...rly.run>,
        Hamza Mahfooz <someguy@...ective-light.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Manasi Navare <manasi.d.navare@...el.com>,
        José Roberto de Souza <jose.souza@...el.com>,
        Imre Deak <imre.deak@...el.com>,
        Dave Airlie <airlied@...hat.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Karthik B S <karthik.b.s@...el.com>,
        Matt Roper <matthew.d.roper@...el.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH v2] drm/i915/display: replace boilerplate code with helper macros

As per commit 22be87401289 ("drm: TODO: Add DRM_MODESET_LOCK_ALL*
conversion to todo.rst"),
drm_modeset_lock_all()/drm_modeset_unlock_all() and boilerplate code
surrounding instances of drm_modeset_lock_all_ctx() with a local acquire
context should be replaced with the relevant helper macros.

Signed-off-by: Hamza Mahfooz <someguy@...ective-light.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 64e9107d70f7..e8cb2881d2b4 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -40,6 +40,7 @@
 #include <drm/drm_dp_helper.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_fourcc.h>
+#include "drm/drm_modeset_lock.h"
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_rect.h>
@@ -11836,6 +11837,7 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915)
 	struct drm_device *dev = &i915->drm;
 	enum pipe pipe;
 	struct intel_crtc *crtc;
+	struct drm_modeset_acquire_ctx ctx;
 	int ret;
 
 	intel_init_pm(i915);
@@ -11884,9 +11886,9 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915)
 	intel_vga_disable(i915);
 	intel_setup_outputs(i915);
 
-	drm_modeset_lock_all(dev);
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
 	intel_modeset_setup_hw_state(dev, dev->mode_config.acquire_ctx);
-	drm_modeset_unlock_all(dev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 
 	for_each_intel_crtc(dev, crtc) {
 		struct intel_initial_plane_config plane_config = {};
@@ -12795,22 +12797,14 @@ void intel_display_resume(struct drm_device *dev)
 	if (state)
 		state->acquire_ctx = &ctx;
 
-	drm_modeset_acquire_init(&ctx, 0);
-
-	while (1) {
-		ret = drm_modeset_lock_all_ctx(dev, &ctx);
-		if (ret != -EDEADLK)
-			break;
-
-		drm_modeset_backoff(&ctx);
-	}
+	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
 
 	if (!ret)
 		ret = __intel_display_resume(dev, state, &ctx);
 
 	intel_enable_ipc(dev_priv);
-	drm_modeset_drop_locks(&ctx);
-	drm_modeset_acquire_fini(&ctx);
+
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 
 	if (ret)
 		drm_err(&dev_priv->drm,
-- 
2.32.0