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From: Sascha Hauer <s.hauer@pengutronix.de>
To: dmaengine@vger.kernel.org
Cc: Vinod Koul <vkoul@kernel.org>,
	kernel@pengutronix.de, linux-imx@nxp.com,
	linux-arm-kernel@lists.infradead.org,
	Robin Gong <yibin.gong@nxp.com>,
	Sascha Hauer <s.hauer@pengutronix.de>
Subject: [PATCH] dmaengine: imx-sdma: initialize all script addresses
Date: Wed, 13 May 2020 08:04:05 +0200	[thread overview]
Message-ID: <20200513060405.18685-1-s.hauer@pengutronix.de> (raw)

The script addresses array increases with each new version. The driver
initializes the array to -EINVAL initially, but only up to the size
of the v1 array. Initialize the additional addresses for the newer
versions as well. Without this unitialized values of the newer arrays
are treated as valid.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/dma/imx-sdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 01422e721b26e..2ca79357f57dc 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -2080,7 +2080,7 @@ static int sdma_probe(struct platform_device *pdev)
 
 	/* initially no scripts available */
 	saddr_arr = (s32 *)sdma->script_addrs;
-	for (i = 0; i < SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; i++)
+	for (i = 0; i < sizeof(*sdma->script_addrs) / sizeof(s32); i++)
 		saddr_arr[i] = -EINVAL;
 
 	dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask);
-- 
2.26.2


WARNING: multiple messages have this Message-ID (diff)
From: Sascha Hauer <s.hauer@pengutronix.de>
To: dmaengine@vger.kernel.org
Cc: Sascha Hauer <s.hauer@pengutronix.de>,
	Vinod Koul <vkoul@kernel.org>,
	linux-imx@nxp.com, kernel@pengutronix.de,
	Robin Gong <yibin.gong@nxp.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] dmaengine: imx-sdma: initialize all script addresses
Date: Wed, 13 May 2020 08:04:05 +0200	[thread overview]
Message-ID: <20200513060405.18685-1-s.hauer@pengutronix.de> (raw)

The script addresses array increases with each new version. The driver
initializes the array to -EINVAL initially, but only up to the size
of the v1 array. Initialize the additional addresses for the newer
versions as well. Without this unitialized values of the newer arrays
are treated as valid.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/dma/imx-sdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 01422e721b26e..2ca79357f57dc 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -2080,7 +2080,7 @@ static int sdma_probe(struct platform_device *pdev)
 
 	/* initially no scripts available */
 	saddr_arr = (s32 *)sdma->script_addrs;
-	for (i = 0; i < SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; i++)
+	for (i = 0; i < sizeof(*sdma->script_addrs) / sizeof(s32); i++)
 		saddr_arr[i] = -EINVAL;
 
 	dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask);
-- 
2.26.2


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             reply	other threads:[~2020-05-13  6:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-13  6:04 Sascha Hauer [this message]
2020-05-13  6:04 ` [PATCH] dmaengine: imx-sdma: initialize all script addresses Sascha Hauer
2020-05-13  8:02 ` Robin Gong
2020-05-13  8:02   ` Robin Gong
2020-05-15  6:57 ` Vinod Koul
2020-05-15  6:57   ` Vinod Koul

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