linux-kernel - [PATCH 4.19 57/92] mmc: renesas_sdhi_internal_dmac: clean up the code for dma complete

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200820091540.583963283@linuxfoundation.org>
Date:   Thu, 20 Aug 2020 11:21:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 57/92] mmc: renesas_sdhi_internal_dmac: clean up the code for dma complete

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>

[ Upstream commit 2b26e34e9af3fa24fa1266e9ea2d66a1f7d62dc0 ]

To add end() operation in the future, clean the code of
renesas_sdhi_internal_dmac_complete_tasklet_fn(). No behavior change.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Link: https://lore.kernel.org/r/1590044466-28372-3-git-send-email-yoshihiro.shimoda.uh@renesas.com
Tested-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mmc/host/renesas_sdhi_internal_dmac.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index 382172fb3da8f..74eea8247490d 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -222,15 +222,12 @@ static void renesas_sdhi_internal_dmac_issue_tasklet_fn(unsigned long arg)
 					    DTRAN_CTRL_DM_START);
 }
 
-static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg)
+static bool renesas_sdhi_internal_dmac_complete(struct tmio_mmc_host *host)
 {
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
 	enum dma_data_direction dir;
 
-	spin_lock_irq(&host->lock);
-
 	if (!host->data)
-		goto out;
+		return false;
 
 	if (host->data->flags & MMC_DATA_READ)
 		dir = DMA_FROM_DEVICE;
@@ -243,6 +240,17 @@ static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg)
 	if (dir == DMA_FROM_DEVICE)
 		clear_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, &global_flags);
 
+	return true;
+}
+
+static void renesas_sdhi_internal_dmac_complete_tasklet_fn(unsigned long arg)
+{
+	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
+
+	spin_lock_irq(&host->lock);
+	if (!renesas_sdhi_internal_dmac_complete(host))
+		goto out;
+
 	tmio_mmc_do_data_irq(host);
 out:
 	spin_unlock_irq(&host->lock);
-- 
2.25.1