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 5581E5FDD8; Tue, 13 Feb 2024 17:23:50 +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=1707845030; cv=none; b=pkJBVbc1SrC2YlHSOY0x95NfbbSCVhEzCMFdVzDGSFQlgQU1l4+VBaSRsWlfgoI/TGDKcziPeRNm9nzaezY7XUPz7uHW6y49IUIYi6TtfLVOmaM0lUaVboY9/5BgUQpsIAUa84IYbk2zHL2PeWMiVYfaYI2x//gnKikLm1RqPmk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707845030; c=relaxed/simple; bh=R2Ww+BDKfkuYHMME2VwVWxu5i6a7gSBTapt0B8n4U54=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=syt56zCXSdZ3I8sQ22WV/T7uysylcEju4xPn8xY4+qp8KLAK47GsVW0fYPCyobHMiVoENAC9t1O8U06Xm5OrnMHBoghYuBYaFPv7t62wtziD6K+FMiWy4EcFVGAm9LBucGXM9rGwMo4wKQE+3wDng19ynX9ziEJnYqqxmINlWUA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sZ2FgIf8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sZ2FgIf8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5BBDC433C7; Tue, 13 Feb 2024 17:23:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1707845030; bh=R2Ww+BDKfkuYHMME2VwVWxu5i6a7gSBTapt0B8n4U54=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sZ2FgIf8FvqB+dvRI4k7DPy4IzLXnCvZSnFc3QDU5PkaRb4Ll6Bosc3PoCVWvDXWw T2DoBQP2Z6gmWM1A3mnQ5quq6j+m4PPEa2q+9Nh28Gs60EV0leRZ4tQDqwhjA+r8Jg vzj3R6NbEFBiWkGKbEGIYaN9VnkWeHgFy9ebGTgM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jai Luthra , Peter Ujfalusi , Vinod Koul , Sasha Levin Subject: [PATCH 6.1 03/64] dmaengine: ti: k3-udma: Report short packet errors Date: Tue, 13 Feb 2024 18:20:49 +0100 Message-ID: <20240213171844.830813079@linuxfoundation.org> X-Mailer: git-send-email 2.43.1 In-Reply-To: <20240213171844.702064831@linuxfoundation.org> References: <20240213171844.702064831@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jai Luthra [ Upstream commit bc9847c9ba134cfe3398011e343dcf6588c1c902 ] Propagate the TR response status to the device using BCDMA split-channels. For example CSI-RX driver should be able to check if a frame was not transferred completely (short packet) and needs to be discarded. Fixes: 25dcb5dd7b7c ("dmaengine: ti: New driver for K3 UDMA") Signed-off-by: Jai Luthra Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20240103-tr_resp_err-v1-1-2fdf6d48ab92@ti.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/ti/k3-udma.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index b86b809eb1f7..82e7acfda6ed 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -3963,6 +3963,7 @@ static void udma_desc_pre_callback(struct virt_dma_chan *vc, { struct udma_chan *uc = to_udma_chan(&vc->chan); struct udma_desc *d; + u8 status; if (!vd) return; @@ -3972,12 +3973,12 @@ static void udma_desc_pre_callback(struct virt_dma_chan *vc, if (d->metadata_size) udma_fetch_epib(uc, d); - /* Provide residue information for the client */ if (result) { void *desc_vaddr = udma_curr_cppi5_desc_vaddr(d, d->desc_idx); if (cppi5_desc_get_type(desc_vaddr) == CPPI5_INFO0_DESC_TYPE_VAL_HOST) { + /* Provide residue information for the client */ result->residue = d->residue - cppi5_hdesc_get_pktlen(desc_vaddr); if (result->residue) @@ -3986,7 +3987,12 @@ static void udma_desc_pre_callback(struct virt_dma_chan *vc, result->result = DMA_TRANS_NOERROR; } else { result->residue = 0; - result->result = DMA_TRANS_NOERROR; + /* Propagate TR Response errors to the client */ + status = d->hwdesc[0].tr_resp_base->status; + if (status) + result->result = DMA_TRANS_ABORTED; + else + result->result = DMA_TRANS_NOERROR; } } } -- 2.43.0