From patchwork Wed Jan 29 09:27:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Finn Thain X-Patchwork-Id: 11355749 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B3C4E92A for ; Wed, 29 Jan 2020 09:36:34 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 94BAA2070E for ; Wed, 29 Jan 2020 09:36:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 94BAA2070E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:43246 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iwjlx-0005No-OQ for patchwork-qemu-devel@patchwork.kernel.org; Wed, 29 Jan 2020 04:36:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51410) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iwjl3-0003bV-TS for qemu-devel@nongnu.org; Wed, 29 Jan 2020 04:35:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iwjl1-0000k9-RS for qemu-devel@nongnu.org; Wed, 29 Jan 2020 04:35:37 -0500 Received: from kvm5.telegraphics.com.au ([98.124.60.144]:50046) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iwjl1-0000jY-N6; Wed, 29 Jan 2020 04:35:35 -0500 Received: by kvm5.telegraphics.com.au (Postfix, from userid 502) id 57278299BE; Wed, 29 Jan 2020 04:35:35 -0500 (EST) To: Jason Wang , qemu-devel@nongnu.org Message-Id: <1753b927c867d25e87da8d5d20fa0b9d60f938cb.1580290069.git.fthain@telegraphics.com.au> In-Reply-To: References: From: Finn Thain Subject: [PATCH v4 04/14] dp8393x: Have dp8393x_receive() return the packet size MIME-Version: 1.0 Date: Wed, 29 Jan 2020 20:27:49 +1100 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 98.124.60.144 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Herv=C3=A9_Poussineau?= , Aleksandar Rikalo , =?utf-8?q?Philippe_Mathieu?= =?utf-8?q?-Daud=C3=A9?= , Laurent Vivier , qemu-stable@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This function re-uses its 'size' argument as a scratch variable. Instead, declare a local 'size' variable for that purpose so that the function result doesn't get messed up. Signed-off-by: Finn Thain Reviewed-by: Philippe Mathieu-Daudé Tested-by: Laurent Vivier --- hw/net/dp8393x.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 2d2ace2549..ece72cbf42 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -757,20 +757,21 @@ static int dp8393x_receive_filter(dp8393xState *s, const uint8_t * buf, } static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, - size_t size) + size_t pkt_size) { dp8393xState *s = qemu_get_nic_opaque(nc); int packet_type; uint32_t available, address; - int width, rx_len = size; + int width, rx_len = pkt_size; uint32_t checksum; + int size; width = (s->regs[SONIC_DCR] & SONIC_DCR_DW) ? 2 : 1; s->regs[SONIC_RCR] &= ~(SONIC_RCR_PRX | SONIC_RCR_LBK | SONIC_RCR_FAER | SONIC_RCR_CRCR | SONIC_RCR_LPKT | SONIC_RCR_BC | SONIC_RCR_MC); - packet_type = dp8393x_receive_filter(s, buf, size); + packet_type = dp8393x_receive_filter(s, buf, pkt_size); if (packet_type < 0) { DPRINTF("packet not for netcard\n"); return -1; @@ -864,7 +865,7 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, /* Done */ dp8393x_update_irq(s); - return size; + return pkt_size; } static void dp8393x_reset(DeviceState *dev)