* [PATCH] dma: device: Remove redundant code
@ 2023-08-13 13:22 coolrrsh
2023-08-28 18:19 ` Dave Jiang
0 siblings, 1 reply; 2+ messages in thread
From: coolrrsh @ 2023-08-13 13:22 UTC (permalink / raw)
To: fenghua.yu, dave.jiang, vkoul, dmaengine, linux-kernel
Cc: linux-kernel-mentees, Rajeshwar R Shinde
From: Rajeshwar R Shinde <coolrrsh@gmail.com>
dma_alloc_coherent function already zeroes the array 'addr'.
So, memset function call is not needed.
This fixes warning such as:
drivers/dma/idxd/device.c:783:8-26:
WARNING: dma_alloc_coherent used in addr already zeroes out memory,
so memset is not needed.
Signed-off-by: Rajeshwar R Shinde <coolrrsh@gmail.com>
---
drivers/dma/idxd/device.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 5abbcc61c528..7c74bc60f582 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -786,8 +786,6 @@ static int idxd_device_evl_setup(struct idxd_device *idxd)
goto err_alloc;
}
- memset(addr, 0, size);
-
spin_lock(&evl->lock);
evl->log = addr;
evl->dma = dma_addr;
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] dma: device: Remove redundant code
2023-08-13 13:22 [PATCH] dma: device: Remove redundant code coolrrsh
@ 2023-08-28 18:19 ` Dave Jiang
0 siblings, 0 replies; 2+ messages in thread
From: Dave Jiang @ 2023-08-28 18:19 UTC (permalink / raw)
To: coolrrsh, fenghua.yu, vkoul, dmaengine, linux-kernel; +Cc: linux-kernel-mentees
On 8/13/23 06:22, coolrrsh@gmail.com wrote:
> From: Rajeshwar R Shinde <coolrrsh@gmail.com>
>
> dma_alloc_coherent function already zeroes the array 'addr'.
> So, memset function call is not needed.
>
> This fixes warning such as:
> drivers/dma/idxd/device.c:783:8-26:
> WARNING: dma_alloc_coherent used in addr already zeroes out memory,
> so memset is not needed.
>
> Signed-off-by: Rajeshwar R Shinde <coolrrsh@gmail.com>
Please rename subject line to:
dmaengine: idxd: Remove redundant memset() for eventlog allocation
With the change,
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> ---
> drivers/dma/idxd/device.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
> index 5abbcc61c528..7c74bc60f582 100644
> --- a/drivers/dma/idxd/device.c
> +++ b/drivers/dma/idxd/device.c
> @@ -786,8 +786,6 @@ static int idxd_device_evl_setup(struct idxd_device *idxd)
> goto err_alloc;
> }
>
> - memset(addr, 0, size);
> -
> spin_lock(&evl->lock);
> evl->log = addr;
> evl->dma = dma_addr;
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-08-28 18:19 ` Dave Jiang
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