* [PATCH linux-next] octeontx2-af: Remove redundant assignment operations
@ 2021-10-21 6:50 luo penghao
2021-10-22 18:08 ` Jakub Kicinski
0 siblings, 1 reply; 4+ messages in thread
From: luo penghao @ 2021-10-21 6:50 UTC (permalink / raw)
To: SimonHorman
Cc: Mirko Lindner, David S . Miller, Jakub Kicinski, netdev,
linux-kernel, luo penghao, Zeal Robot
The variable err will be reassigned on subsequent branches, and this
assignment does not perform related value operations.
clang_analyzer complains as follows:
drivers/net/ethernet/marvell/sky2.c:4988: warning:
Although the value stored to 'err' is used in the enclosing expression,
the value is never actually read from 'err'.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
---
drivers/net/ethernet/marvell/sky2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 8b8bff5..33558aa 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -4985,7 +4985,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_master(pdev);
if (sizeof(dma_addr_t) > sizeof(u32) &&
- !(err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))) {
+ !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
using_dac = 1;
err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
if (err < 0) {
--
2.15.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH linux-next] octeontx2-af: Remove redundant assignment operations
2021-10-21 6:50 [PATCH linux-next] octeontx2-af: Remove redundant assignment operations luo penghao
@ 2021-10-22 18:08 ` Jakub Kicinski
0 siblings, 0 replies; 4+ messages in thread
From: Jakub Kicinski @ 2021-10-22 18:08 UTC (permalink / raw)
To: luo penghao
Cc: SimonHorman, Mirko Lindner, David S . Miller, netdev,
luo penghao, Zeal Robot
On Thu, 21 Oct 2021 06:50:19 +0000 luo penghao wrote:
> The variable err will be reassigned on subsequent branches, and this
> assignment does not perform related value operations.
>
> clang_analyzer complains as follows:
>
> drivers/net/ethernet/marvell/sky2.c:4988: warning:
>
> Although the value stored to 'err' is used in the enclosing expression,
> the value is never actually read from 'err'.
Oh you did CC Mirko on this version.. Do you not have the CCs automated?
scripts/get_maintainer.pl is your friend.
If you're posting a new version of the patch please put [PATCH v2] as
the subject prefix. And stop putting the pointless linux-next there.
Thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH linux-next] octeontx2-af: Remove redundant assignment operations
2021-10-18 9:16 luo penghao
@ 2021-10-20 9:18 ` Simon Horman
0 siblings, 0 replies; 4+ messages in thread
From: Simon Horman @ 2021-10-20 9:18 UTC (permalink / raw)
To: luo penghao
Cc: Mirko Lindner, Stephen Hemminger, David S . Miller,
Jakub Kicinski, netdev, linux-kernel, penghao luo, Zeal Robot
On Mon, Oct 18, 2021 at 09:16:12AM +0000, luo penghao wrote:
> From: penghao luo <luo.penghao@zte.com.cn>
I think the correct patch-prefix for this would be:
[PATCH net-next] sky2:
>
> the variable err will be reassigned on subsequent branches, and this
> assignment does not perform related value operations.
>
> clang_analyzer complains as follows:
>
> drivers/net/ethernet/marvell/sky2.c:4988: warning:
>
> Although the value stored to 'err' is used in the enclosing expression,
> the value is never actually read from 'err'.
>
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: penghao luo <luo.penghao@zte.com.cn>
> ---
> drivers/net/ethernet/marvell/sky2.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
> index 3cb9c12..6428ae5 100644
> --- a/drivers/net/ethernet/marvell/sky2.c
> +++ b/drivers/net/ethernet/marvell/sky2.c
> @@ -4907,7 +4907,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> pci_set_master(pdev);
>
> if (sizeof(dma_addr_t) > sizeof(u32) &&
> - !(err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))) {
> + !(dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))) {
I think you can drop the parentheses around the call to dma_set_mask()
> using_dac = 1;
> err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
> if (err < 0) {
> --
> 2.15.2
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH linux-next] octeontx2-af: Remove redundant assignment operations
@ 2021-10-18 9:16 luo penghao
2021-10-20 9:18 ` Simon Horman
0 siblings, 1 reply; 4+ messages in thread
From: luo penghao @ 2021-10-18 9:16 UTC (permalink / raw)
To: Mirko Lindner
Cc: Stephen Hemminger, David S . Miller, Jakub Kicinski, netdev,
linux-kernel, penghao luo, Zeal Robot
From: penghao luo <luo.penghao@zte.com.cn>
the variable err will be reassigned on subsequent branches, and this
assignment does not perform related value operations.
clang_analyzer complains as follows:
drivers/net/ethernet/marvell/sky2.c:4988: warning:
Although the value stored to 'err' is used in the enclosing expression,
the value is never actually read from 'err'.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: penghao luo <luo.penghao@zte.com.cn>
---
drivers/net/ethernet/marvell/sky2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 3cb9c12..6428ae5 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -4907,7 +4907,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_master(pdev);
if (sizeof(dma_addr_t) > sizeof(u32) &&
- !(err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))) {
+ !(dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))) {
using_dac = 1;
err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
if (err < 0) {
--
2.15.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
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2021-10-21 6:50 [PATCH linux-next] octeontx2-af: Remove redundant assignment operations luo penghao
2021-10-22 18:08 ` Jakub Kicinski
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2021-10-18 9:16 luo penghao
2021-10-20 9:18 ` Simon Horman
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