Re: [PATCH v2 -next] net: mediatek: remove set but not used variable 'status'

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Hi!

On 26.08.19 09:10, René van Dorst wrote:
Let's add Stefan to the conversation.
He is the author of this commit.

Thanks Rene.
Quoting Mao Wenan <maowenan@xxxxxxxxxx>:

Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/mediatek/mtk_eth_soc.c: In function mtk_handle_irq:
drivers/net/ethernet/mediatek/mtk_eth_soc.c:1951:6: warning:
variable status set but not used [-Wunused-but-set-variable]

Fixes: 296c9120752b ("net: ethernet: mediatek: Add MT7628/88 SoC support")
Signed-off-by: Mao Wenan <maowenan@xxxxxxxxxx>
---
  v2: change format of 'Fixes' tag.
  drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 --
  1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 8ddbb8d..bb7d623 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1948,9 +1948,7 @@ static irqreturn_t mtk_handle_irq_tx(int irq,
void *_eth)
  static irqreturn_t mtk_handle_irq(int irq, void *_eth)
  {
  	struct mtk_eth *eth = _eth;
-	u32 status;

-	status = mtk_r32(eth, MTK_PDMA_INT_STATUS);

Hi Stefan,

You added an extra MTK_PDMA_INT_STATUS read in mtk_handle_irq()
Is that read necessary to work properly?

No, its not needed. This read must have "slipped in" from some earlier
patch versions and I forgot to remove it later. Thanks for catching it.

Reviewed-by: Stefan Roese <sr@xxxxxxx>

Thanks,
Stefan



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