From patchwork Fri Apr 28 12:24:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13226363 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2D97C77B60 for ; Fri, 28 Apr 2023 12:25:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345839AbjD1MZN (ORCPT ); Fri, 28 Apr 2023 08:25:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230169AbjD1MZC (ORCPT ); Fri, 28 Apr 2023 08:25:02 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BA994699 for ; Fri, 28 Apr 2023 05:25:00 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id BEE122008D; Fri, 28 Apr 2023 12:24:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1682684698; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+OcYfYVJ7U+KiGswDbBZ+oiWz6sQpYQbnNJZdT2+/4I=; b=vH+NWtNXZOr3hHQNVE5aL4/NZCNylcfT9Fw5c2ARYhe0dinKCeRUJ1gzo2XbeY6flwnR3B SvEBoA9FbFs8NsYS/t0ia6k2A0qkzrliOKz3CDwwD01pVn2cEUNNED38QtOzJp0Vq2EbzR drgKU8uGDvi7vd3jxtLfKvLU6YRM3QE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1682684698; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+OcYfYVJ7U+KiGswDbBZ+oiWz6sQpYQbnNJZdT2+/4I=; b=jKK7E3cUIZZr6sWtJymZgs/iQ7ng7EeId5Mk85iUzgYBE54NSb9Ap+7F/Kgh6YSfEICtSQ v9JN5IBMQaP0FfCQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 85710139C3; Fri, 28 Apr 2023 12:24:58 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id uEbIHxq7S2RgeAAAMHmgww (envelope-from ); Fri, 28 Apr 2023 12:24:58 +0000 From: Thomas Zimmermann To: maarten.lankhorst@linux.intel.com, mripard@kernel.org, airlied@gmail.com, daniel@ffwll.ch, javierm@redhat.com, deller@gmx.de, geert@linux-m68k.org, sudipm.mukherjee@gmail.com, teddy.wang@siliconmotion.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 11/19] fbdev/udlfb: Use struct fb_info.screen_buffer Date: Fri, 28 Apr 2023 14:24:44 +0200 Message-Id: <20230428122452.4856-12-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230428122452.4856-1-tzimmermann@suse.de> References: <20230428122452.4856-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Use info->screen_buffer when reading and writing framebuffers in system memory. It's the correct pointer for this address space. The struct fb_info has a union to store the framebuffer memory. This can either be info->screen_base if the framebuffer is stored in I/O memory, or info->screen_buffer if the framebuffer is stored in system memory. As the driver operates on the latter address space, it is wrong to use .screen_base and .screen_buffer must be used instead. This also gets rid of casting needed due to not using the correct data type. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas --- drivers/video/fbdev/udlfb.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c index 216d49c9d47e..09cf9381075a 100644 --- a/drivers/video/fbdev/udlfb.c +++ b/drivers/video/fbdev/udlfb.c @@ -1006,7 +1006,7 @@ static void dlfb_ops_destroy(struct fb_info *info) fb_dealloc_cmap(&info->cmap); if (info->monspecs.modedb) fb_destroy_modedb(info->monspecs.modedb); - vfree(info->screen_base); + vfree(info->screen_buffer); fb_destroy_modelist(&info->modelist); @@ -1120,7 +1120,7 @@ static int dlfb_ops_set_par(struct fb_info *info) /* paint greenscreen */ - pix_framebuffer = (u16 *) info->screen_base; + pix_framebuffer = (u16 *)info->screen_buffer; for (i = 0; i < info->fix.smem_len / 2; i++) pix_framebuffer[i] = 0x37e6; } @@ -1219,7 +1219,7 @@ static void dlfb_deferred_vfree(struct dlfb_data *dlfb, void *mem) static int dlfb_realloc_framebuffer(struct dlfb_data *dlfb, struct fb_info *info, u32 new_len) { u32 old_len = info->fix.smem_len; - const void *old_fb = (const void __force *)info->screen_base; + const void *old_fb = info->screen_buffer; unsigned char *new_fb; unsigned char *new_back = NULL; @@ -1236,12 +1236,12 @@ static int dlfb_realloc_framebuffer(struct dlfb_data *dlfb, struct fb_info *info } memset(new_fb, 0xff, new_len); - if (info->screen_base) { + if (info->screen_buffer) { memcpy(new_fb, old_fb, old_len); - dlfb_deferred_vfree(dlfb, (void __force *)info->screen_base); + dlfb_deferred_vfree(dlfb, info->screen_buffer); } - info->screen_base = (char __iomem *)new_fb; + info->screen_buffer = new_fb; info->fix.smem_len = new_len; info->fix.smem_start = (unsigned long) new_fb; info->flags = udlfb_info_flags;