From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 050C7421F0D; Tue, 9 Jun 2026 19:50:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781034640; cv=none; b=WK6o17iT1ZYHzAmWtsmMc/yBNfDfjHv3Ck2NJhNNvAws6m0fUnbAXh3rXWe/5/nQr2lyg/AEWxJj3NfR/lk/dfLsBr+I7Pt8uoO1MLBexz1cWVjWJlog4RTPqKMja1SJl/6193MLCE6kaJedYbCG0H13Vhy4JUiK+152Ur41Vbs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781034640; c=relaxed/simple; bh=qDHiX+VfH20+ld9aCOnf7cvawt2d6bVvCml3bWdmaBw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=uLHpBlBLbQFg3wrUI5sn8yOGf5j30XiqY7U8//7IU0g8g27IPepuU/EVLjtaAoeaIxrfIKKRyKc2AQQFSkzw6/av6t5jxYEy1iMitjgltsnnRDW2SKdOLITTc19AhpIr3Cq8F6zkQ55iVUT5ZBysmELB6e3TKPl7qzpInovOdXQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PhCdB25h; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PhCdB25h" Received: by smtp.kernel.org (Postfix) with ESMTPS id 7D1ECC4AF0D; Tue, 9 Jun 2026 19:50:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1781034639; bh=qDHiX+VfH20+ld9aCOnf7cvawt2d6bVvCml3bWdmaBw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=PhCdB25hVkTTQ5NFpFJf6aNocjA8sHBglESjAnwQ9QwnNfx2O2pATCqGV/kcLAg4U dC9WY9R/LVST3vsHNvwCf+kuTsbZtodW1mI4+rRDH4Ov+ekwHuBhfWbfNOgLpOkdDl KhwP3dJy/jKcL7Y3hdXV4DYrgpSjXA9IgmENxZzSmnHy1kpLQX/eKkDnW9/pHa13Xe 35Cu+PetScQCvr2VugSROqAKCB60AwK+uIfTScTnxoNsNJwgVYNvTuQVPPf0T4MPIt FR4F6HF5Ta5+0thJ49a5uDSPYTho99fR+q+Z380Y5eU1pGo8swjybt8p98QOno4eXh ReA845YHwxrZw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61BECCD8CA8; Tue, 9 Jun 2026 19:50:39 +0000 (UTC) From: Selvamani Rajagopal via B4 Relay Date: Tue, 09 Jun 2026 12:50:25 -0700 Subject: [PATCH net v4 2/4] net: ethernet: oa_tc6: No return on rx buffer overflow error Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260609-level-trigger-v4-2-6f389abdd192@onsemi.com> References: <20260609-level-trigger-v4-0-6f389abdd192@onsemi.com> In-Reply-To: <20260609-level-trigger-v4-0-6f389abdd192@onsemi.com> To: Parthiban Veerasooran , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Parthiban Veerasooran , Andrew Lunn , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Conor Dooley , devicetree@vger.kernel.org, Piergiorgio Beruto , Selvamani Rajagopal X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1781034634; l=1060; i=Selvamani.Rajagopal@onsemi.com; s=20260531; h=from:subject:message-id; bh=yhR8HTXSMQfVHwLvu+hxa/iwF+g3lB6yLmCaf00cLr0=; b=+dS5oTqpgsXIpSMF3woxcgZKVCEYPQO5BLXzIGMbTLyg58wC1VGsEVD0iOHPaH2CtXFFhs4Gd tGBLwxgZ/lwCHA8goLH4YNWb8E8CdUnQaY5OqI5rPkP4F2rOGj8iCiY X-Developer-Key: i=Selvamani.Rajagopal@onsemi.com; a=ed25519; pk=5QRdM0HS/LGWWcUZZ9hVfZ+qbPQGZCumcTXOiN7Fyug= X-Endpoint-Received: by B4 Relay for Selvamani.Rajagopal@onsemi.com/20260531 with auth_id=803 X-Original-From: Selvamani Rajagopal Reply-To: Selvamani.Rajagopal@onsemi.com From: Selvamani Rajagopal On RX buffer overflow error, the bad data chunks must be thrown away and code should look for a data chunk with "start valid" bit set, which would indicate next valid MAC frame. In this change, oa_tc6_try_spi_transfer is called again if it returns error code EAGAIN. This helps to recover from the error gracefully. Fixes: 2c6ce5354453 ("net: ethernet: oa_tc6: implement mac-phy interrupt") Signed-off-by: Selvamani Rajagopal Changes in v4: new patch --- drivers/net/ethernet/oa_tc6.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/oa_tc6.c b/drivers/net/ethernet/oa_tc6.c index e2c0843207f2..20c9e98d1d60 100644 --- a/drivers/net/ethernet/oa_tc6.c +++ b/drivers/net/ethernet/oa_tc6.c @@ -1111,6 +1111,8 @@ static irqreturn_t oa_tc6_macphy_threaded_irq(int irq, void *data) while (tc6->int_flag || (tc6->waiting_tx_skb && tc6->tx_credits)) { ret = oa_tc6_try_spi_transfer(tc6); + if (ret == -EAGAIN) + continue; if (ret) break; } -- 2.43.0