From patchwork Thu Apr 26 08:06:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jyri Sarha X-Patchwork-Id: 10364871 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 76B76601BE for ; Thu, 26 Apr 2018 08:07:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6A8F129082 for ; Thu, 26 Apr 2018 08:07:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5D10C29087; Thu, 26 Apr 2018 08:07:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id ABA0F29085 for ; Thu, 26 Apr 2018 08:07:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A07A46E659; Thu, 26 Apr 2018 08:07:22 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from fllnx209.ext.ti.com (fllnx209.ext.ti.com [198.47.19.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id 124AB6E648 for ; Thu, 26 Apr 2018 08:07:17 +0000 (UTC) Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by fllnx209.ext.ti.com (8.15.1/8.15.1) with ESMTP id w3Q878fM023153; Thu, 26 Apr 2018 03:07:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1524730028; bh=jYDN9c82RjXf3pEmHrnf0dKLyJcYFBTCR866HinxKdc=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=wG/B0PYU/UdL7xaVx8ov+0i1YCo1S9zNZH/iPXB7OZiDNcX07u5TPm43HrDcDYNEM 873wkFOsBlxFF4PQpQLTXuW/B7qDmWPwj3GKzqyGoZnlTDLgKoLutsu3AUz5zvs3bh R+5cEn2kJgYT7VlWf75A/N6Pa9+iNwmNnSZ1baoQ= Received: from DFLE111.ent.ti.com (dfle111.ent.ti.com [10.64.6.32]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id w3Q878tm015489; Thu, 26 Apr 2018 03:07:08 -0500 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Thu, 26 Apr 2018 03:07:07 -0500 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Thu, 26 Apr 2018 03:07:07 -0500 Received: from jadmar.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id w3Q872lT014814; Thu, 26 Apr 2018 03:07:05 -0500 From: Jyri Sarha To: Subject: [PATCH v4 1/2] drm/panel: Remove drm_panel_detach() calls from all panel drives Date: Thu, 26 Apr 2018 11:06:59 +0300 Message-ID: <464b8d330d6b4c94cfb5aad2ca9ea7eb2c52d934.1524727888.git.jsarha@ti.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, Jyri Sarha , tomi.valkeinen@ti.com, thierry.reding@gmail.com, laurent.pinchart@ideasonboard.com, peda@axentia.se Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Remove all drm_panel_detach() calls from all panel drives update the kernel doc for drm_panel_detach(). Setting the connector and drm to NULL when the drm panel device is going away hardly serves any purpose. Usually the the whole memory structure is freed right after the remove call. However, calling the detach function from the master drm device, and setting the connector pointer to NULL, has the logic of marking the panel again as available for another drm master to attach. The usual situation would be the same drm master device binding again. Signed-off-by: Jyri Sarha Reviewed-by: Daniel Vetter --- drivers/gpu/drm/drm_panel.c | 6 ++++++ drivers/gpu/drm/panel/panel-innolux-p079zca.c | 1 - drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 1 - drivers/gpu/drm/panel/panel-lvds.c | 1 - drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c | 1 - drivers/gpu/drm/panel/panel-seiko-43wvf1g.c | 1 - drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c | 1 - drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 1 - drivers/gpu/drm/panel/panel-simple.c | 1 - drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 1 - 10 files changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c index 308d442..71e4075 100644 --- a/drivers/gpu/drm/drm_panel.c +++ b/drivers/gpu/drm/drm_panel.c @@ -94,6 +94,9 @@ EXPORT_SYMBOL(drm_panel_remove); * * An error is returned if the panel is already attached to another connector. * + * When unloading, the driver should detach from the panel by calling + * drm_panel_detach(). + * * Return: 0 on success or a negative error code on failure. */ int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector) @@ -115,6 +118,9 @@ EXPORT_SYMBOL(drm_panel_attach); * Detaches a panel from the connector it is attached to. If a panel is not * attached to any connector this is effectively a no-op. * + * This function should not be called by the panel device itself. It + * is only for the drm device that called drm_panel_attach(). + * * Return: 0 on success or a negative error code on failure. */ int drm_panel_detach(struct drm_panel *panel) diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c index 57df39b..bb53e08 100644 --- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c +++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c @@ -292,7 +292,6 @@ static int innolux_panel_remove(struct mipi_dsi_device *dsi) DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n", err); - drm_panel_detach(&innolux->base); innolux_panel_del(innolux); return 0; diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c index 0a94ab7..99caa78 100644 --- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c +++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c @@ -500,7 +500,6 @@ static int jdi_panel_remove(struct mipi_dsi_device *dsi) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); - drm_panel_detach(&jdi->base); jdi_panel_del(jdi); return 0; diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c index 5185819..8a16878 100644 --- a/drivers/gpu/drm/panel/panel-lvds.c +++ b/drivers/gpu/drm/panel/panel-lvds.c @@ -282,7 +282,6 @@ static int panel_lvds_remove(struct platform_device *pdev) { struct panel_lvds *lvds = dev_get_drvdata(&pdev->dev); - drm_panel_detach(&lvds->panel); drm_panel_remove(&lvds->panel); panel_lvds_disable(&lvds->panel); diff --git a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c index 74a8061..cb4dfb9 100644 --- a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c +++ b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c @@ -299,7 +299,6 @@ static int wuxga_nt_panel_remove(struct mipi_dsi_device *dsi) if (ret < 0) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); - drm_panel_detach(&wuxga_nt->base); wuxga_nt_panel_del(wuxga_nt); return 0; diff --git a/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c b/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c index 71c09ed..75f9253 100644 --- a/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c +++ b/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c @@ -292,7 +292,6 @@ static int seiko_panel_remove(struct platform_device *pdev) { struct seiko_panel *panel = dev_get_drvdata(&pdev->dev); - drm_panel_detach(&panel->base); drm_panel_remove(&panel->base); seiko_panel_disable(&panel->base); diff --git a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c index 6bf8730..02fc0f5 100644 --- a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c +++ b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c @@ -418,7 +418,6 @@ static int sharp_panel_remove(struct mipi_dsi_device *dsi) if (err < 0) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); - drm_panel_detach(&sharp->base); sharp_panel_del(sharp); return 0; diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c index 494aa9b..e5cae00 100644 --- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c @@ -327,7 +327,6 @@ static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi) if (ret < 0) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); - drm_panel_detach(&sharp_nt->base); sharp_nt_panel_del(sharp_nt); return 0; diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index f2d96611..9388acf 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -364,7 +364,6 @@ static int panel_simple_remove(struct device *dev) { struct panel_simple *panel = dev_get_drvdata(dev); - drm_panel_detach(&panel->base); drm_panel_remove(&panel->base); panel_simple_disable(&panel->base); diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c index 358c64e..74284e5 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -419,7 +419,6 @@ static int st7789v_remove(struct spi_device *spi) { struct st7789v *ctx = spi_get_drvdata(spi); - drm_panel_detach(&ctx->panel); drm_panel_remove(&ctx->panel); if (ctx->backlight)