From: Sascha Hauer <s.hauer@pengutronix.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Vasiliy Kulikov <segooon@gmail.com>,
kernel-janitors@vger.kernel.org,
Linus Walleij <linus.walleij@stericsson.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dma: imx-dma: fix signedness bug
Date: Wed, 20 Oct 2010 06:37:19 +0000 [thread overview]
Message-ID: <20101020063719.GE28242@pengutronix.de> (raw)
In-Reply-To: <AANLkTik15Z2_wyDRDOHOnpKKPgb+PHWs477esndgWmex@mail.gmail.com>
mxdmac->channel was unsigned, so check (imxdmac->channel < 0) for
failed imx_dma_request_by_prio() made no sence. Explicitly check
signed values.
Also, fix uninitialzed use of ret.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
Here's an updated patch fixing both issues.
drivers/dma/imx-dma.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 346be62..f629e49 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -335,8 +335,10 @@ static int __init imxdma_probe(struct platform_device *pdev)
imxdmac->imxdma_channel = imx_dma_request_by_prio("dmaengine",
DMA_PRIO_MEDIUM);
- if (imxdmac->channel < 0)
+ if ((int)imxdmac->channel < 0) {
+ ret = -ENODEV;
goto err_init;
+ }
imx_dma_setup_handlers(imxdmac->imxdma_channel,
imxdma_irq_handler, imxdma_err_handler, imxdmac);
--
1.7.2.3
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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WARNING: multiple messages have this Message-ID (diff)
From: Sascha Hauer <s.hauer@pengutronix.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Vasiliy Kulikov <segooon@gmail.com>,
kernel-janitors@vger.kernel.org,
Linus Walleij <linus.walleij@stericsson.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dma: imx-dma: fix signedness bug
Date: Wed, 20 Oct 2010 08:37:19 +0200 [thread overview]
Message-ID: <20101020063719.GE28242@pengutronix.de> (raw)
In-Reply-To: <AANLkTik15Z2_wyDRDOHOnpKKPgb+PHWs477esndgWmex@mail.gmail.com>
mxdmac->channel was unsigned, so check (imxdmac->channel < 0) for
failed imx_dma_request_by_prio() made no sence. Explicitly check
signed values.
Also, fix uninitialzed use of ret.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
Here's an updated patch fixing both issues.
drivers/dma/imx-dma.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 346be62..f629e49 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -335,8 +335,10 @@ static int __init imxdma_probe(struct platform_device *pdev)
imxdmac->imxdma_channel = imx_dma_request_by_prio("dmaengine",
DMA_PRIO_MEDIUM);
- if (imxdmac->channel < 0)
+ if ((int)imxdmac->channel < 0) {
+ ret = -ENODEV;
goto err_init;
+ }
imx_dma_setup_handlers(imxdmac->imxdma_channel,
imxdma_irq_handler, imxdma_err_handler, imxdmac);
--
1.7.2.3
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
next prev parent reply other threads:[~2010-10-20 6:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-17 14:51 [PATCH] dma: imx-dma: fix signedness bug Vasiliy Kulikov
2010-10-17 14:51 ` Vasiliy Kulikov
2010-10-18 8:02 ` Sascha Hauer
2010-10-18 8:02 ` Sascha Hauer
2010-10-19 22:26 ` Dan Williams
2010-10-19 22:26 ` Dan Williams
2010-10-20 6:35 ` Sascha Hauer
2010-10-20 6:35 ` Sascha Hauer
2010-10-20 6:37 ` Sascha Hauer [this message]
2010-10-20 6:37 ` Sascha Hauer
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