From mboxrd@z Thu Jan 1 00:00:00 1970 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0FB22E909DE for ; Tue, 17 Feb 2026 17:04:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B2B2E10E540; Tue, 17 Feb 2026 17:04:45 +0000 (UTC) Received: from psionic.psi5.com (psionic.psi5.com [185.187.169.70]) by gabe.freedesktop.org (Postfix) with ESMTPS id CCEB910E534; Tue, 17 Feb 2026 17:04:44 +0000 (UTC) Received: from localhost.localdomain (unknown [IPv6:2400:2410:b120:f200:2e09:4dff:fe00:2e9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by psionic.psi5.com (Postfix) with ESMTPSA id 34A883F204; Tue, 17 Feb 2026 18:04:41 +0100 (CET) From: Simon Richter To: linux-pci@vger.kernel.org Cc: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Simon Richter Subject: [PATCH 1/5] vgaarb: pass vga_get errors to userspace Date: Wed, 18 Feb 2026 02:04:15 +0900 Message-ID: <20260217170419.236739-2-Simon.Richter@hogyros.de> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260217170419.236739-1-Simon.Richter@hogyros.de> References: <20260217170419.236739-1-Simon.Richter@hogyros.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" If vga_get fails, return the error code via the write syscall. Signed-off-by: Simon Richter --- drivers/pci/vgaarb.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c index 87143e235033..5c2719cb1bfa 100644 --- a/drivers/pci/vgaarb.c +++ b/drivers/pci/vgaarb.c @@ -1134,6 +1134,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user *buf, char kbuf[64], *curr_pos; size_t remaining = count; + int err; int ret_val; int i; @@ -1165,7 +1166,12 @@ static ssize_t vga_arb_write(struct file *file, const char __user *buf, goto done; } - vga_get_uninterruptible(pdev, io_state); + err = vga_get_uninterruptible(pdev, io_state); + if (unlikely(err)) + { + ret_val = err; + goto done; + } /* Update the client's locks lists */ for (i = 0; i < MAX_USER_CARDS; i++) { -- 2.47.3