From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6A87D38DC44; Sat, 17 Oct 2026 17:01:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792256497; cv=none; b=pc6PZHyewLL+jZYPbVFNpFbYurj+NAm+tyAEwmLZKmtjNMBVAf1/nGS4E8mY9ZKDsy0/0DtexWioAgqe+rW8uhWPfO3JJCqb0XRygrXjWJR2MX8gUJU9NOxuEFrfU1NTL5IGd7Y7VEwbmq8vZAT2SENmwZptaLg1/LCUsqUQsZI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792256497; c=relaxed/simple; bh=PCropCUZ6E0GAm+jXYztIU/2gMmOWLK0UneKmCoVnmE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jEKXYbFZzTvhtzHmxxqoAnaPYj/JsJl+1HQ0OjiumKUVLVmMskSvD1Bi7eq5PseNCb+1xfQwbmTAtBroQN06B2Fv+5+FyE2owhW3eJYKPynonRtUgqnKF6lKuCU1tXs1TG+GRKbGS4gXs9OgiG55PFJ8zV19371IM/H6G4oDx34= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=uCdFRQWH; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="uCdFRQWH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6FB601F000C4; Sat, 17 Oct 2026 17:01:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792256496; bh=ZPUAqZx68h/mfZsdxpF98XvghoZiBfV8w6p95iD0pT8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=uCdFRQWH64cyym3jeOS/dRrQdmXDqRxWtMq6r3jq7W5ltoKnJflsjG3ZIja8Xx5p5 RvQhXldPNYmzRsVvjTW68B4VNlBRKjZ7TTWRXGoE0CufBML6QvskLXNWYmu2vx0oWo V1pHAL55moyFMI9h6tlj5gHgAmu4CReShfRDx7I0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nicolai Buchwitz , Florian Fainelli , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.6 0212/1674] net: systemport: Fix RUNT MIB counter register offset calculation Date: Sat, 17 Oct 2026 17:41:24 +0200 Message-ID: <20261017160436.590399352@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160431.119607952@linuxfoundation.org> References: <20261017160431.119607952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Fainelli [ Upstream commit 242935adfeb096f09b29fb2cfcf12f9eb2911fc6 ] In UniMAC hardware, there is a 0xC byte gap between the RX MIB counters and the TX MIB counters, and a second 0xC byte gap between the TX MIB counters and the RX RUNT MIB counters. In bcm_sysport_update_mib_counters(), 'offset' was only set to UMAC_MIB_STAT_OFFSET (0xC) for all non-RX counters, omitting the second 0xC gap for BCM_SYSPORT_STAT_RUNT counters. As a result, all 4 RUNT MIB counters were read from unmapped gap register space. Fix this by setting offset to 2 * UMAC_MIB_STAT_OFFSET (0x18) when reading BCM_SYSPORT_STAT_RUNT counters. Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver") Reviewed-by: Nicolai Buchwitz Signed-off-by: Florian Fainelli Link: https://patch.msgid.link/20260922232440.598918-6-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/broadcom/bcmsysport.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index b48e2dfb7d70e..332e0745eb754 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -425,8 +425,10 @@ static void bcm_sysport_update_mib_counters(struct bcm_sysport_priv *priv) if (priv->is_lite) continue; - if (s->type != BCM_SYSPORT_STAT_MIB_RX) + if (s->type == BCM_SYSPORT_STAT_MIB_TX) offset = UMAC_MIB_STAT_OFFSET; + else if (s->type == BCM_SYSPORT_STAT_RUNT) + offset = 2 * UMAC_MIB_STAT_OFFSET; val = umac_readl(priv, UMAC_MIB_START + j + offset); break; case BCM_SYSPORT_STAT_RXCHK: -- 2.53.0