From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2EB46C6FD18 for ; Tue, 28 Mar 2023 14:49:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233384AbjC1Otp (ORCPT ); Tue, 28 Mar 2023 10:49:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233403AbjC1Ota (ORCPT ); Tue, 28 Mar 2023 10:49:30 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DEC42E1B2 for ; Tue, 28 Mar 2023 07:48:55 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 715AACE1DA1 for ; Tue, 28 Mar 2023 14:48:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B5EDC433D2; Tue, 28 Mar 2023 14:48:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680014930; bh=Wjtgmh6xp8S3VHXvxyTI4dkfmF9xauyJqPXlSRI2/aQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Aw7wHbsuNHrJuw10C35VLYeJw2SAti+/5qzeyOS0KKjLOTHxNqW3BHf4PWNlf0c9U LblB8upxmmSFjc3VG+9cGpLWPafZybL8cpNE1XXTqykcblfqhuP5HjmqfMP58MrcaV FYlBsSowaaW3bz9UjZG683pu+niBUPHoTBoARWpg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexander Duyck , Geoff Levand , "David S. Miller" , Sasha Levin Subject: [PATCH 6.2 064/240] net/ps3_gelic_net: Use dma_mapping_error Date: Tue, 28 Mar 2023 16:40:27 +0200 Message-Id: <20230328142622.392575012@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230328142619.643313678@linuxfoundation.org> References: <20230328142619.643313678@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Geoff Levand [ Upstream commit bebe933d35a63d4f042fbf4dce4f22e689ba0fcd ] The current Gelic Etherenet driver was checking the return value of its dma_map_single call, and not using the dma_mapping_error() routine. Fixes runtime problems like these: DMA-API: ps3_gelic_driver sb_05: device driver failed to check map error WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:1027 .check_unmap+0x888/0x8dc Fixes: 02c1889166b4 ("ps3: gigabit ethernet driver for PS3, take3") Reviewed-by: Alexander Duyck Signed-off-by: Geoff Levand Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/toshiba/ps3_gelic_net.c | 24 +++++++++++--------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/toshiba/ps3_gelic_net.c b/drivers/net/ethernet/toshiba/ps3_gelic_net.c index dffd664e65f4e..9d535ae596266 100644 --- a/drivers/net/ethernet/toshiba/ps3_gelic_net.c +++ b/drivers/net/ethernet/toshiba/ps3_gelic_net.c @@ -317,15 +317,17 @@ static int gelic_card_init_chain(struct gelic_card *card, /* set up the hardware pointers in each descriptor */ for (i = 0; i < no; i++, descr++) { + dma_addr_t cpu_addr; + gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); - descr->bus_addr = - dma_map_single(ctodev(card), descr, - GELIC_DESCR_SIZE, - DMA_BIDIRECTIONAL); - if (!descr->bus_addr) + cpu_addr = dma_map_single(ctodev(card), descr, + GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); + + if (dma_mapping_error(ctodev(card), cpu_addr)) goto iommu_error; + descr->bus_addr = cpu_to_be32(cpu_addr); descr->next = descr + 1; descr->prev = descr - 1; } @@ -375,6 +377,7 @@ static int gelic_descr_prepare_rx(struct gelic_card *card, static const unsigned int rx_skb_size = ALIGN(GELIC_NET_MAX_FRAME, GELIC_NET_RXBUF_ALIGN) + GELIC_NET_RXBUF_ALIGN - 1; + dma_addr_t cpu_addr; int offset; if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) @@ -396,11 +399,10 @@ static int gelic_descr_prepare_rx(struct gelic_card *card, if (offset) skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); /* io-mmu-map the skb */ - descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), - descr->skb->data, - GELIC_NET_MAX_FRAME, - DMA_FROM_DEVICE)); - if (!descr->buf_addr) { + cpu_addr = dma_map_single(ctodev(card), descr->skb->data, + GELIC_NET_MAX_FRAME, DMA_FROM_DEVICE); + descr->buf_addr = cpu_to_be32(cpu_addr); + if (dma_mapping_error(ctodev(card), cpu_addr)) { dev_kfree_skb_any(descr->skb); descr->skb = NULL; dev_info(ctodev(card), @@ -780,7 +782,7 @@ static int gelic_descr_prepare_tx(struct gelic_card *card, buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); - if (!buf) { + if (dma_mapping_error(ctodev(card), buf)) { dev_err(ctodev(card), "dma map 2 failed (%p, %i). Dropping packet\n", skb->data, skb->len); -- 2.39.2