From patchwork Wed Jun 4 14:27:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 4294401 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DE38EBEEAA for ; Wed, 4 Jun 2014 14:27:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B2C2420260 for ; Wed, 4 Jun 2014 14:27:47 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 51D602021A for ; Wed, 4 Jun 2014 14:27:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 45D266E4D2; Wed, 4 Jun 2014 07:27:43 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-qg0-f48.google.com (mail-qg0-f48.google.com [209.85.192.48]) by gabe.freedesktop.org (Postfix) with ESMTP id D902F6E4D2 for ; Wed, 4 Jun 2014 07:27:42 -0700 (PDT) Received: by mail-qg0-f48.google.com with SMTP id i50so15931668qgf.35 for ; Wed, 04 Jun 2014 07:27:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=dm1wBEXh7UJT+BTg1vIcY1zLr06kBYuKT2UIi8MwVuo=; b=EdxoNrpQeysQH93PK/UEovUKvW1SBSzBBgMJbFLTfvOxn8U3u4hiaal8R3puWRRM4i QzsKxfsVu15s8D3M7fQ9FMjoZR/1UVMTFqdSQoBPrfho/DxAptFenSh/yWItYvF27YY7 4ZjmRl2PW4tzm5Mn8eHgMRtOh82Dswzh1siNSO1Q8Z4gt5QHm7CacdALBuFOR2IIwljH oLGizFTI+g89S9MgO0pXRXvOMitPgntfFR31tMdpejAQYpSGxcfds8x9XertBPCVkbhj 3MoQEAHK6sdaWoKbbjNWZNMTylkVGYXUpfXaFouo2lkJLnnqf50vkO1COjVkeMkAJkFG mk6Q== X-Received: by 10.229.171.193 with SMTP id i1mr71642639qcz.15.1401892062274; Wed, 04 Jun 2014 07:27:42 -0700 (PDT) Received: from localhost (pool-108-20-252-79.bstnma.east.verizon.net. [108.20.252.79]) by mx.google.com with ESMTPSA id l46sm1728934qga.21.2014.06.04.07.27.40 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 04 Jun 2014 07:27:41 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Subject: [PATCH 2/2] drm: add drm_fb_helper_restore_fbdev_mode_unlocked() Date: Wed, 4 Jun 2014 10:27:26 -0400 Message-Id: <1401892046-10287-3-git-send-email-robdclark@gmail.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1401892046-10287-1-git-send-email-robdclark@gmail.com> References: <1401892046-10287-1-git-send-email-robdclark@gmail.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP All drm_fb_helper_restore_fbdev_mode() call sites, save one, do the same locking. Simplify this into drm_fb_helper_restore_fbdev_mode_unlocked(). Signed-off-by: Rob Clark Reviewed-by: Daniel Vetter --- drivers/gpu/drm/armada/armada_fbdev.c | 4 +-- drivers/gpu/drm/drm_fb_cma_helper.c | 9 ++---- drivers/gpu/drm/drm_fb_helper.c | 50 ++++++++++++++++++++++--------- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 4 +-- drivers/gpu/drm/gma500/psb_drv.c | 4 +-- drivers/gpu/drm/i915/intel_fbdev.c | 6 +--- drivers/gpu/drm/msm/msm_drv.c | 7 ++--- drivers/gpu/drm/omapdrm/omap_drv.c | 4 +-- drivers/gpu/drm/tegra/fb.c | 7 ++--- include/drm/drm_fb_helper.h | 2 +- 10 files changed, 48 insertions(+), 49 deletions(-) diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index 948cb14..fd166f5 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -181,10 +181,8 @@ void armada_fbdev_lastclose(struct drm_device *dev) { struct armada_private *priv = dev->dev_private; - drm_modeset_lock_all(dev); if (priv->fbdev) - drm_fb_helper_restore_fbdev_mode(priv->fbdev); - drm_modeset_unlock_all(dev); + drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev); } void armada_fbdev_fini(struct drm_device *dev) diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index 61b5a47..f27c883 100644 --- a/drivers/gpu/drm/drm_fb_cma_helper.c +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -429,13 +429,8 @@ EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini); */ void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma) { - if (fbdev_cma) { - struct drm_device *dev = fbdev_cma->fb_helper.dev; - - drm_modeset_lock_all(dev); - drm_fb_helper_restore_fbdev_mode(&fbdev_cma->fb_helper); - drm_modeset_unlock_all(dev); - } + if (fbdev_cma) + drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev_cma->fb_helper); } EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode); diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 43329ce..d5d8cea 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -273,15 +273,7 @@ int drm_fb_helper_debug_leave(struct fb_info *info) } EXPORT_SYMBOL(drm_fb_helper_debug_leave); -/** - * drm_fb_helper_restore_fbdev_mode - restore fbdev configuration - * @fb_helper: fbcon to restore - * - * This should be called from driver's drm ->lastclose callback - * when implementing an fbcon on top of kms using this helper. This ensures that - * the user isn't greeted with a black screen when e.g. X dies. - */ -bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) +static bool restore_fbdev_mode(struct drm_fb_helper *fb_helper) { struct drm_device *dev = fb_helper->dev; struct drm_plane *plane; @@ -311,7 +303,40 @@ bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) } return error; } -EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); +/** + * drm_fb_helper_restore_fbdev_mode - restore fbdev configuration + * @fb_helper: fbcon to restore + * + * This should be called from driver's drm ->lastclose callback + * when implementing an fbcon on top of kms using this helper. This ensures that + * the user isn't greeted with a black screen when e.g. X dies. + * + * Use this variant if you need to bypass locking (panic), or already + * hold all modeset locks. Otherwise use drm_fb_helper_restore_fbdev_mode_unlocked() + */ +static bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) +{ + return restore_fbdev_mode(fb_helper); +} + +/** + * drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration + * @fb_helper: fbcon to restore + * + * This should be called from driver's drm ->lastclose callback + * when implementing an fbcon on top of kms using this helper. This ensures that + * the user isn't greeted with a black screen when e.g. X dies. + */ +bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) +{ + struct drm_device *dev = fb_helper->dev; + bool ret; + drm_modeset_lock_all(dev); + ret = restore_fbdev_mode(fb_helper); + drm_modeset_unlock_all(dev); + return ret; +} +EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked); /* * restore fbcon display for all kms driver's using this helper, used for sysrq @@ -824,7 +849,6 @@ EXPORT_SYMBOL(drm_fb_helper_check_var); int drm_fb_helper_set_par(struct fb_info *info) { struct drm_fb_helper *fb_helper = info->par; - struct drm_device *dev = fb_helper->dev; struct fb_var_screeninfo *var = &info->var; if (var->pixclock != 0) { @@ -832,9 +856,7 @@ int drm_fb_helper_set_par(struct fb_info *info) return -EINVAL; } - drm_modeset_lock_all(dev); - drm_fb_helper_restore_fbdev_mode(fb_helper); - drm_modeset_unlock_all(dev); + drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); if (fb_helper->delayed_hotplug) { fb_helper->delayed_hotplug = false; diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index 14bbaa3..d771b46 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -367,7 +367,5 @@ void exynos_drm_fbdev_restore_mode(struct drm_device *dev) if (!private || !private->fb_helper) return; - drm_modeset_lock_all(dev); - drm_fb_helper_restore_fbdev_mode(private->fb_helper); - drm_modeset_unlock_all(dev); + drm_fb_helper_restore_fbdev_mode_unlocked(private->fb_helper); } diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c index 0a3101a..59ea45e 100644 --- a/drivers/gpu/drm/gma500/psb_drv.c +++ b/drivers/gpu/drm/gma500/psb_drv.c @@ -112,11 +112,9 @@ static void psb_driver_lastclose(struct drm_device *dev) struct drm_psb_private *dev_priv = dev->dev_private; struct psb_fbdev *fbdev = dev_priv->fbdev; - drm_modeset_lock_all(dev); - ret = drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper); + ret = drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->psb_fb_helper); if (ret) DRM_DEBUG("failed to restore crtc mode\n"); - drm_modeset_unlock_all(dev); return; } diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index e2d4161..6ea2d75 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -687,11 +687,7 @@ void intel_fbdev_restore_mode(struct drm_device *dev) if (!dev_priv->fbdev) return; - drm_modeset_lock_all(dev); - - ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper); + ret = drm_fb_helper_restore_fbdev_mode_unlocked(&dev_priv->fbdev->helper); if (ret) DRM_DEBUG("failed to restore crtc mode\n"); - - drm_modeset_unlock_all(dev); } diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index c071aac..0d2562f 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -386,11 +386,8 @@ static void msm_preclose(struct drm_device *dev, struct drm_file *file) static void msm_lastclose(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; - if (priv->fbdev) { - drm_modeset_lock_all(dev); - drm_fb_helper_restore_fbdev_mode(priv->fbdev); - drm_modeset_unlock_all(dev); - } + if (priv->fbdev) + drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev); } static irqreturn_t msm_irq(int irq, void *arg) diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index c8270e4..002b972 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -588,9 +588,7 @@ static void dev_lastclose(struct drm_device *dev) } } - drm_modeset_lock_all(dev); - ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev); - drm_modeset_unlock_all(dev); + ret = drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev); if (ret) DBG("failed to restore crtc mode"); } diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index f7fca09..9798a70 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -346,11 +346,8 @@ static void tegra_fbdev_free(struct tegra_fbdev *fbdev) void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev) { - if (fbdev) { - drm_modeset_lock_all(fbdev->base.dev); - drm_fb_helper_restore_fbdev_mode(&fbdev->base); - drm_modeset_unlock_all(fbdev->base.dev); - } + if (fbdev) + drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->base); } static void tegra_fb_output_poll_changed(struct drm_device *drm) diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 6e622f7..7997246 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -108,7 +108,7 @@ int drm_fb_helper_set_par(struct fb_info *info); int drm_fb_helper_check_var(struct fb_var_screeninfo *var, struct fb_info *info); -bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper); +bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper); void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, uint32_t fb_width, uint32_t fb_height); void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,