* [PATCH] dma: xilinx: check the return value of dma_set_mask() in zynqmp_dma_probe()
@ 2022-03-03 2:43 Jia-Ju Bai
2022-03-04 8:20 ` Michael Tretter
0 siblings, 1 reply; 3+ messages in thread
From: Jia-Ju Bai @ 2022-03-03 2:43 UTC (permalink / raw)
To: vkoul, michal.simek, m.tretter, yukuai3, lars, libaokun1
Cc: dmaengine, linux-arm-kernel, linux-kernel, Jia-Ju Bai
The function dma_set_mask() in zynqmp_dma_probe() can fail, so its
return value should be checked.
Fixes: b0cc417c1637 ("dmaengine: Add Xilinx zynqmp dma engine driver support")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
drivers/dma/xilinx/zynqmp_dma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
index 7aa63b652027..963fb1de93af 100644
--- a/drivers/dma/xilinx/zynqmp_dma.c
+++ b/drivers/dma/xilinx/zynqmp_dma.c
@@ -1050,7 +1050,8 @@ static int zynqmp_dma_probe(struct platform_device *pdev)
zdev->dev = &pdev->dev;
INIT_LIST_HEAD(&zdev->common.channels);
- dma_set_mask(&pdev->dev, DMA_BIT_MASK(44));
+ if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(44)))
+ return -EIO;
dma_cap_set(DMA_MEMCPY, zdev->common.cap_mask);
p = &zdev->common;
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] dma: xilinx: check the return value of dma_set_mask() in zynqmp_dma_probe()
2022-03-03 2:43 [PATCH] dma: xilinx: check the return value of dma_set_mask() in zynqmp_dma_probe() Jia-Ju Bai
@ 2022-03-04 8:20 ` Michael Tretter
2022-03-05 8:38 ` Jia-Ju Bai
0 siblings, 1 reply; 3+ messages in thread
From: Michael Tretter @ 2022-03-04 8:20 UTC (permalink / raw)
To: Jia-Ju Bai
Cc: vkoul, michal.simek, yukuai3, lars, libaokun1, dmaengine,
linux-arm-kernel, linux-kernel, kernel
On Wed, 02 Mar 2022 18:43:34 -0800, Jia-Ju Bai wrote:
> The function dma_set_mask() in zynqmp_dma_probe() can fail, so its
> return value should be checked.
>
> Fixes: b0cc417c1637 ("dmaengine: Add Xilinx zynqmp dma engine driver support")
> Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
> Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
> ---
> drivers/dma/xilinx/zynqmp_dma.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
> index 7aa63b652027..963fb1de93af 100644
> --- a/drivers/dma/xilinx/zynqmp_dma.c
> +++ b/drivers/dma/xilinx/zynqmp_dma.c
> @@ -1050,7 +1050,8 @@ static int zynqmp_dma_probe(struct platform_device *pdev)
> zdev->dev = &pdev->dev;
> INIT_LIST_HEAD(&zdev->common.channels);
>
> - dma_set_mask(&pdev->dev, DMA_BIT_MASK(44));
> + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(44)))
> + return -EIO;
Thanks.
You may print an error message with dev_err_probe and forward the return value
of dma_set_mask.
Michael
> dma_cap_set(DMA_MEMCPY, zdev->common.cap_mask);
>
> p = &zdev->common;
> --
> 2.17.1
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] dma: xilinx: check the return value of dma_set_mask() in zynqmp_dma_probe()
2022-03-04 8:20 ` Michael Tretter
@ 2022-03-05 8:38 ` Jia-Ju Bai
0 siblings, 0 replies; 3+ messages in thread
From: Jia-Ju Bai @ 2022-03-05 8:38 UTC (permalink / raw)
To: Michael Tretter
Cc: vkoul, michal.simek, yukuai3, lars, libaokun1, dmaengine,
linux-arm-kernel, linux-kernel, kernel
On 2022/3/4 16:20, Michael Tretter wrote:
> On Wed, 02 Mar 2022 18:43:34 -0800, Jia-Ju Bai wrote:
>> The function dma_set_mask() in zynqmp_dma_probe() can fail, so its
>> return value should be checked.
>>
>> Fixes: b0cc417c1637 ("dmaengine: Add Xilinx zynqmp dma engine driver support")
>> Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
>> Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
>> ---
>> drivers/dma/xilinx/zynqmp_dma.c | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
>> index 7aa63b652027..963fb1de93af 100644
>> --- a/drivers/dma/xilinx/zynqmp_dma.c
>> +++ b/drivers/dma/xilinx/zynqmp_dma.c
>> @@ -1050,7 +1050,8 @@ static int zynqmp_dma_probe(struct platform_device *pdev)
>> zdev->dev = &pdev->dev;
>> INIT_LIST_HEAD(&zdev->common.channels);
>>
>> - dma_set_mask(&pdev->dev, DMA_BIT_MASK(44));
>> + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(44)))
>> + return -EIO;
> Thanks.
>
> You may print an error message with dev_err_probe and forward the return value
> of dma_set_mask.
Hi Michael,
Thanks for the advice.
I will send a V2 patch.
Best wishes,
Jia-Ju Bai
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-03-03 2:43 [PATCH] dma: xilinx: check the return value of dma_set_mask() in zynqmp_dma_probe() Jia-Ju Bai
2022-03-04 8:20 ` Michael Tretter
2022-03-05 8:38 ` Jia-Ju Bai
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