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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Peng Fan <peng.fan@nxp.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-serial@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 165/174] tty: serial: imx: use the sg count from dma_map_sg
Date: Thu, 16 Jan 2020 12:42:42 -0500
Message-ID: <20200116174251.24326-165-sashal@kernel.org> (raw)
In-Reply-To: <20200116174251.24326-1-sashal@kernel.org>

From: Peng Fan <peng.fan@nxp.com>

[ Upstream commit 596fd8dffb745afcebc0ec6968e17fe29f02044c ]

The dmaengine_prep_slave_sg needs to use sg count returned
by dma_map_sg, not use sport->dma_tx_nents, because the return
value of dma_map_sg is not always same with "nents".

Fixes: b4cdc8f61beb ("serial: imx: add DMA support for imx6q")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/1573108875-26530-1-git-send-email-peng.fan@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/serial/imx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index d607cb2eb64e..b59d0dafefab 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -545,7 +545,7 @@ static void imx_dma_tx(struct imx_port *sport)
 		dev_err(dev, "DMA mapping error for TX.\n");
 		return;
 	}
-	desc = dmaengine_prep_slave_sg(chan, sgl, sport->dma_tx_nents,
+	desc = dmaengine_prep_slave_sg(chan, sgl, ret,
 					DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
 	if (!desc) {
 		dma_unmap_sg(dev, sgl, sport->dma_tx_nents,
-- 
2.20.1


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Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116174251.24326-1-sashal@kernel.org>
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 022/174] clk: samsung: exynos4: fix refcount leak in exynos4_get_xom() Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 023/174] clk: imx6q: fix refcount leak in imx6q_clocks_init() Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 024/174] clk: imx6sx: fix refcount leak in imx6sx_clocks_init() Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 025/174] clk: imx7d: fix refcount leak in imx7d_clocks_init() Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 026/174] clk: vf610: fix refcount leak in vf610_clocks_init() Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 032/174] media: s5p-jpeg: Correct step and max values for V4L2_CID_JPEG_RESTART_INTERVAL Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 034/174] ASoC: imx-sgtl5000: put of nodes if finding codec fails Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 052/174] clocksource/drivers/sun5i: Fail gracefully when clock rate is unavailable Sasha Levin
2020-01-16 17:40 ` [PATCH AUTOSEL 4.4 053/174] ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used Sasha Levin
2020-01-16 17:41 ` [PATCH AUTOSEL 4.4 065/174] ARM: OMAP2+: Fix potentially uninitialized return value for _setup_reset() Sasha Levin
2020-01-16 17:41 ` [PATCH AUTOSEL 4.4 071/174] spi: bcm2835aux: fix driver to not allow 65535 (=-1) cs-gpios Sasha Levin
2020-01-16 17:41 ` [PATCH AUTOSEL 4.4 074/174] ARM: pxa: ssp: Fix "WARNING: invalid free of devm_ allocated data" Sasha Levin
2020-01-16 17:41 ` [PATCH AUTOSEL 4.4 090/174] ARM: riscpc: fix lack of keyboard interrupts after irq conversion Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 142/174] net: ethernet: stmmac: Fix signedness bug in ipq806x_gmac_of_parse() Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 146/174] net: stmmac: fix length of PTP clock's name string Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 149/174] dmaengine: imx-sdma: fix size check for sdma script_number Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 151/174] mt7601u: fix bbp version check in mt7601u_wait_bbp_ready Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 156/174] spi: atmel: fix handling of cs_change set on non-last xfer Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 159/174] clk: samsung: exynos5420: Preserve CPU clocks configuration during suspend/resume Sasha Levin
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 161/174] media: exynos4-is: Fix recursive locking in isp_video_release() Sasha Levin
2020-01-16 17:42 ` Sasha Levin [this message]
2020-01-16 17:42 ` [PATCH AUTOSEL 4.4 173/174] arm64: dts: juno: Fix UART frequency Sasha Levin

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