From patchwork Thu May 21 07:01:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 11562329 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 8FC301391 for ; Thu, 21 May 2020 07:01:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 795D420759 for ; Thu, 21 May 2020 07:01:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728267AbgEUHBW (ORCPT ); Thu, 21 May 2020 03:01:22 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:15628 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728245AbgEUHBW (ORCPT ); Thu, 21 May 2020 03:01:22 -0400 X-IronPort-AV: E=Sophos;i="5.73,416,1583161200"; d="scan'208";a="47651286" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 21 May 2020 16:01:19 +0900 Received: from localhost.localdomain (unknown [10.166.252.89]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 92978400C45F; Thu, 21 May 2020 16:01:19 +0900 (JST) From: Yoshihiro Shimoda To: ulf.hansson@linaro.org, wsa+renesas@sang-engineering.com Cc: linux-mmc@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH 3/3] mmc: renesas_sdhi_internal_dmac: Fix dma unmapping in error cases Date: Thu, 21 May 2020 16:01:06 +0900 Message-Id: <1590044466-28372-4-git-send-email-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1590044466-28372-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> References: <1590044466-28372-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org If this controller doesn't issue interrupt for response of command, this driver lacks to call dma_unmap_sg(). So, fix the issue by using end() of struct tmio_mmc_dma_ops. Reported-by: Takeshi Saito Fixes: 2a68ea7896e3 ("mmc: renesas-sdhi: add support for R-Car Gen3 SDHI DMAC") Signed-off-by: Yoshihiro Shimoda --- drivers/mmc/host/renesas_sdhi_internal_dmac.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c index 201b8ed..32ab991 100644 --- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c @@ -233,6 +233,9 @@ static bool renesas_sdhi_internal_dmac_complete(struct tmio_mmc_host *host) { enum dma_data_direction dir; + if (!host->dma_on) + return false; + if (!host->data) return false; @@ -247,6 +250,8 @@ static bool renesas_sdhi_internal_dmac_complete(struct tmio_mmc_host *host) if (dir == DMA_FROM_DEVICE) clear_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, &global_flags); + host->dma_on = false; + return true; } @@ -263,6 +268,12 @@ static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg) spin_unlock_irq(&host->lock); } +static void renesas_sdhi_internal_dmac_end_dma(struct tmio_mmc_host *host) +{ + if (host->data) + renesas_sdhi_internal_dmac_complete(host); +} + static void renesas_sdhi_internal_dmac_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata) @@ -300,6 +311,7 @@ static const struct tmio_mmc_dma_ops renesas_sdhi_internal_dmac_dma_ops = { .release = renesas_sdhi_internal_dmac_release_dma, .abort = renesas_sdhi_internal_dmac_abort_dma, .dataend = renesas_sdhi_internal_dmac_dataend_dma, + .end = renesas_sdhi_internal_dmac_end_dma, }; /*