linux-kernel - [PATCH] spi: s3c64xx: correct dma

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Date:   Mon,  8 Aug 2022 09:48:51 +0900
From:   Chanho Park <chanho61.park@...sung.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andi Shyti <andi@...zian.org>, Mark Brown <broonie@...nel.org>
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Adithya K V <adithya.kv@...sung.com>,
        kernel test robot <lkp@...el.com>, linux-spi@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Chanho Park <chanho61.park@...sung.com>
Subject: [PATCH] spi: s3c64xx: correct dma_chan pointer initialization

Use NULL for dma channel pointer initialization instead of plain integer.

sparse warnings: (new ones prefixed by >>)
>> drivers/spi/spi-s3c64xx.c:387:34: sparse: sparse: Using plain integer as NULL pointer
   drivers/spi/spi-s3c64xx.c:388:34: sparse: sparse: Using plain integer as NULL pointer

Reported-by: kernel test robot <lkp@...el.com>
Fixes: 82295bc0d192 ("spi: s3c64xx: move dma_release_channel to unprepare")
Fixes: f52b03c70744 ("spi: s3c64xx: requests spi-dma channel only during data transfer")
Signed-off-by: Chanho Park <chanho61.park@...sung.com>
---
 drivers/spi/spi-s3c64xx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 7f346866614a..651c35dd9124 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -389,8 +389,8 @@ static int s3c64xx_spi_unprepare_transfer(struct spi_master *spi)
 	if (sdd->rx_dma.ch && sdd->tx_dma.ch) {
 		dma_release_channel(sdd->rx_dma.ch);
 		dma_release_channel(sdd->tx_dma.ch);
-		sdd->rx_dma.ch = 0;
-		sdd->tx_dma.ch = 0;
+		sdd->rx_dma.ch = NULL;
+		sdd->tx_dma.ch = NULL;
 	}
 
 	return 0;
-- 
2.37.1