From patchwork Thu Sep 19 15:11:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kaustabh Chakraborty X-Patchwork-Id: 829796 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D1491A38FD; Thu, 19 Sep 2024 15:11:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726758736; cv=none; b=ba4+Fzy1x+H/agKoKtKu8BKUtfYTey0Gu+LJ1ePnvIFnkgFOXBxa8B0OQIB0qbD+X5CgyNqCqU5TKWnEcZMh3BXtuAcnauoCE6Nxn5HVlYbxVBVbnJrN8zrPEou9WAR9jQF12eS5rTQySb+mRrzP+jXbAUxqG3T836R+XUtSP+s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726758736; c=relaxed/simple; bh=vtqJW4WoUdJcxU3RW65FntLJKHSrz+r77iQWDTkRUAg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=MsZfD76ARn51Zm2T3l34obrZdhgGNPdxFdQCqhXWuAjeCp5cMRh7pQUu54kYsHJ9Ok6+rHJ+QF4cI7v+P6oyVt+y8z4EkRQeFD2IDG9yfxsIUq+Xl3mn7ejuVbtaU8WsuKNkOiT/nIHaDKpnj5lVtUsGzJbIdSZAvpe43SQTyRM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=Z8QZNb6p; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="Z8QZNb6p" Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 5E2BA23C84; Thu, 19 Sep 2024 17:11:29 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id C22g_44K2jCi; Thu, 19 Sep 2024 17:11:28 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1726758688; bh=vtqJW4WoUdJcxU3RW65FntLJKHSrz+r77iQWDTkRUAg=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Z8QZNb6p6RID89WXQnJeGWWbD9a9lgxAaXxrg3vO+S9gRVFSvO1j88l+7OTuvqBNa leX1+EguSnOiHgsB2G/SxQAd5kx/eVtcwLPKJxwVfQ0x/qs/d4GiHj2eui1r/cb/tQ 2H7foP02Jy0PRTUqkLrrDCN3pFs4uqehqt5Nwqt40clxUghJy1gFvI8h0O5lgxCVyj WznF6VnhNUEBCd/V572JzsGzB6HqsDJ8MiUNIr3pEsWqFl8jyjLq0+gDpP6ahvwbV3 UdlhQVwMOp2dH2RmBM/gVs9LgZ+jbHDI87yEF9hhtJIZGMMyyONYl7L7xqUIe96/Zi PNl777QQ66hpQ== From: Kaustabh Chakraborty Date: Thu, 19 Sep 2024 20:41:00 +0530 Subject: [PATCH 1/6] drm/exynos: exynos7_drm_decon: fix uninitialized crtc reference in functions Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240919-exynosdrm-decon-v1-1-6c5861c1cb04@disroot.org> References: <20240919-exynosdrm-decon-v1-0-6c5861c1cb04@disroot.org> In-Reply-To: <20240919-exynosdrm-decon-v1-0-6c5861c1cb04@disroot.org> To: Inki Dae , Seung-Woo Kim , Kyungmin Park , David Airlie , Simona Vetter , Krzysztof Kozlowski , Alim Akhtar , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Conor Dooley Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Kaustabh Chakraborty decon_clear_channels() and decon_wait_for_vblank() accept a pointer to struct exynos_drm_crtc. However, these functions are called when the crtc is still uninitialized. Moreover, both functions use the pointer to retrieve and use struct decon_context, which is initialized. Modify the functions to accept a pointer to struct decon_context instead. Signed-off-by: Kaustabh Chakraborty --- drivers/gpu/drm/exynos/exynos7_drm_decon.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c index 0d185c0564b9..e994779694f0 100644 --- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c @@ -81,10 +81,8 @@ static const enum drm_plane_type decon_win_types[WINDOWS_NR] = { DRM_PLANE_TYPE_CURSOR, }; -static void decon_wait_for_vblank(struct exynos_drm_crtc *crtc) +static void decon_wait_for_vblank(struct decon_context *ctx) { - struct decon_context *ctx = crtc->ctx; - if (ctx->suspended) return; @@ -100,9 +98,8 @@ static void decon_wait_for_vblank(struct exynos_drm_crtc *crtc) DRM_DEV_DEBUG_KMS(ctx->dev, "vblank wait timed out.\n"); } -static void decon_clear_channels(struct exynos_drm_crtc *crtc) +static void decon_clear_channels(struct decon_context *ctx) { - struct decon_context *ctx = crtc->ctx; unsigned int win, ch_enabled = 0; /* Check if any channel is enabled. */ @@ -118,7 +115,7 @@ static void decon_clear_channels(struct exynos_drm_crtc *crtc) /* Wait for vsync, as disable channel takes effect at next vsync */ if (ch_enabled) - decon_wait_for_vblank(ctx->crtc); + decon_wait_for_vblank(ctx); } static int decon_ctx_initialize(struct decon_context *ctx, @@ -126,7 +123,7 @@ static int decon_ctx_initialize(struct decon_context *ctx, { ctx->drm_dev = drm_dev; - decon_clear_channels(ctx->crtc); + decon_clear_channels(ctx); return exynos_drm_register_dma(drm_dev, ctx->dev, &ctx->dma_priv); }