From nobody Sat Sep 21 07:48:14 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=ilande.co.uk Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1705064733084533.3873102330648; Fri, 12 Jan 2024 05:05:33 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOHB7-0004Rf-S2; Fri, 12 Jan 2024 08:02:30 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOHAc-0003uF-66 for qemu-devel@nongnu.org; Fri, 12 Jan 2024 08:01:59 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOHAa-0001xz-J0 for qemu-devel@nongnu.org; Fri, 12 Jan 2024 08:01:57 -0500 Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rOH6V-0008jM-4I; Fri, 12 Jan 2024 12:57:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=AwCFNghRr2ccUEvp2DS9gkDztp6Uyv4u07aWmdBAAtQ=; b=m+91OkakIUxF8odvm73jfQWI9y Ja5q1neTgeqSWsD97I0zgcMMBfYirrC+XOInbmiqjhRESgH89V+GJWt602LPvOkepMVdM1RZg73Cj +y94Nf+6ZO7Nylp8lz+tQaJA6KwaIaPaKEZe5735/mCqqHqm0cJ4uMc+VINLArdstmenp2h31CieR Ns5ZBSuSIEd48mC1Fzqdx3R2tZ3GGw8wKQMJFBuXSSHsrKdUrk3upDfLSbXqMiWXDlO7PlzaQ4J3A RnmrwzH9ieOKl1IB1O//HMl67zCpWPsvIqtz/MwDAdDsBUCMfUwFGWYwUDRLRmkwroRKeMPt/niNs qxCsAtRAJlbhQEWPX/WDIb7gujX4T/rxUsQWvesZkLWKJhw40+rMmCxF+nCIyArFhBxCsRqFSCs5t rOPaAMGSjPbTLo9ubhXiMaFP9xYkpwCxflFc/vwwHt7jDLYHIwodBBqEbguNbWKfPDdRP5hNumMmX YZDZizVb7hCA+RwlgO7Y34PuJhU4VdNwVttN+VJejGJkECymf6lsIqcaWoIdOJ/pqJY8uXWMfo8+q 1lce6sGli4WQ495C+5YebZvj9nzaZCZbG1S/eBRMhKJ/QK22cVVyg/gqr+1qPhuupEZejoV2GaBjF NPhATMxe4EiYeIEfU7UVGgzBWFbNuV5QD8NMeD8fE=; From: Mark Cave-Ayland To: pbonzini@redhat.com, fam@euphon.net, hpoussin@reactos.org, laurent@vivier.eu, thuth@redhat.com, qemu-devel@nongnu.org Date: Fri, 12 Jan 2024 12:54:02 +0000 Message-Id: <20240112125420.514425-71-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> References: <20240112125420.514425-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 70/88] esp.c: ensure that STAT_INT is cleared when reading ESP_RINTR X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1705064733805100021 Content-Type: text/plain; charset="utf-8" Both esp_raise_irq() and esp_lower_irq() check the STAT_INT bit in ESP_RSTAT to ensure that the IRQ is raised or lowered if its state changes. When read= ing ESP_RINTR, esp_lower_irq() was being called *after* ESP_RSTAT had been cleared meaning that STAT_INT was already clear, and so if STAT_INT was asserted beforehand then the esp_lower_irq() would have no effect. Signed-off-by: Mark Cave-Ayland --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6c62417985..604fb9235d 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1127,6 +1127,7 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) */ val =3D s->rregs[ESP_RINTR]; s->rregs[ESP_RINTR] =3D 0; + esp_lower_irq(s); s->rregs[ESP_RSTAT] &=3D ~STAT_TC; /* * According to the datasheet ESP_RSEQ should be cleared, but as t= he @@ -1137,7 +1138,6 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) * * s->rregs[ESP_RSEQ] =3D SEQ_0; */ - esp_lower_irq(s); break; case ESP_TCHI: /* Return the unique id if the value has never been written */ --=20 2.39.2