[PATCH 09/36] net: ethernet: cadence: remove unnecessary platform_set_drvdata()

[PATCH 09/36] net: ethernet: cadence: remove unnecessary platform_set_drvdata()

[Jingoo Han]

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
 drivers/net/ethernet/cadence/at91_ether.c |    1 -
 drivers/net/ethernet/cadence/macb.c       |    2 --
 2 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c
index cc9a185..3f19571 100644
--- a/drivers/net/ethernet/cadence/at91_ether.c
+++ b/drivers/net/ethernet/cadence/at91_ether.c
@@ -435,7 +435,6 @@ static int at91ether_remove(struct platform_device *pdev)
 	unregister_netdev(dev);
 	clk_disable(lp->pclk);
 	free_netdev(dev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 6be513d..6a7bf7d 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -1635,7 +1635,6 @@ err_out_put_pclk:
 err_out_free_dev:
 	free_netdev(dev);
 err_out:
-	platform_set_drvdata(pdev, NULL);
 	return err;
 }
 
@@ -1661,7 +1660,6 @@ static int __exit macb_remove(struct platform_device *pdev)
 		clk_disable_unprepare(bp->pclk);
 		clk_put(bp->pclk);
 		free_netdev(dev);
-		platform_set_drvdata(pdev, NULL);
 	}
 
 	return 0;
-- 
1.7.2.5

Re: [PATCH 09/36] net: ethernet: cadence: remove unnecessary platform_set_drvdata()

[Nicolas Ferre]

On 07/05/2013 06:23, Jingoo Han :
> The driver core clears the driver data to NULL after device_release
> or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
> (device-core: Ensure drvdata = NULL when no driver is bound).
> Thus, it is not needed to manually clear the device driver data to NULL.
>
> Signed-off-by: Jingoo Han <jg1.han@samsung.com>

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

> ---
>   drivers/net/ethernet/cadence/at91_ether.c |    1 -
>   drivers/net/ethernet/cadence/macb.c       |    2 --
>   2 files changed, 0 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c
> index cc9a185..3f19571 100644
> --- a/drivers/net/ethernet/cadence/at91_ether.c
> +++ b/drivers/net/ethernet/cadence/at91_ether.c
> @@ -435,7 +435,6 @@ static int at91ether_remove(struct platform_device *pdev)
>   	unregister_netdev(dev);
>   	clk_disable(lp->pclk);
>   	free_netdev(dev);
> -	platform_set_drvdata(pdev, NULL);
>
>   	return 0;
>   }
> diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
> index 6be513d..6a7bf7d 100644
> --- a/drivers/net/ethernet/cadence/macb.c
> +++ b/drivers/net/ethernet/cadence/macb.c
> @@ -1635,7 +1635,6 @@ err_out_put_pclk:
>   err_out_free_dev:
>   	free_netdev(dev);
>   err_out:
> -	platform_set_drvdata(pdev, NULL);
>   	return err;
>   }
>
> @@ -1661,7 +1660,6 @@ static int __exit macb_remove(struct platform_device *pdev)
>   		clk_disable_unprepare(bp->pclk);
>   		clk_put(bp->pclk);
>   		free_netdev(dev);
> -		platform_set_drvdata(pdev, NULL);
>   	}
>
>   	return 0;
>


-- 
Nicolas Ferre