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* [PATCH v2] staging: r8188eu: replace rtw_netdev_priv define with inline function
@ 2020-08-01 16:52 Ivan Safonov
  2020-08-01 17:29 ` Joe Perches
  0 siblings, 1 reply; 2+ messages in thread
From: Ivan Safonov @ 2020-08-01 16:52 UTC (permalink / raw)
  To: Larry Finger
  Cc: devel, Ivan Safonov, Greg Kroah-Hartman, B K Karthik, linux-kernel

The function guarantees type checking of arguments and return value.

Result of rtw_netdev_priv macro can be assigned to pointer
with incompatible type without warning. The function allow compiler
to perform this check.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
---
Changes in v2:
  - add blank line after function definition;
  - improve commit message.
---
 drivers/staging/rtl8188eu/include/osdep_service.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8188eu/include/osdep_service.h b/drivers/staging/rtl8188eu/include/osdep_service.h
index 31d897f1d21f..6ca79b5fb638 100644
--- a/drivers/staging/rtl8188eu/include/osdep_service.h
+++ b/drivers/staging/rtl8188eu/include/osdep_service.h
@@ -71,8 +71,11 @@ struct rtw_netdev_priv_indicator {
 };
 struct net_device *rtw_alloc_etherdev_with_old_priv(void *old_priv);
 
-#define rtw_netdev_priv(netdev)					\
-	(((struct rtw_netdev_priv_indicator *)netdev_priv(netdev))->priv)
+static inline struct adapter *rtw_netdev_priv(struct net_device *dev)
+{
+	return (((struct rtw_netdev_priv_indicator *)netdev_priv(dev))->priv);
+}
+
 void rtw_free_netdev(struct net_device *netdev);
 
 #define FUNC_NDEV_FMT "%s(%s)"
-- 
2.26.2

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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH v2] staging: r8188eu: replace rtw_netdev_priv define with inline function
  2020-08-01 16:52 [PATCH v2] staging: r8188eu: replace rtw_netdev_priv define with inline function Ivan Safonov
@ 2020-08-01 17:29 ` Joe Perches
  0 siblings, 0 replies; 2+ messages in thread
From: Joe Perches @ 2020-08-01 17:29 UTC (permalink / raw)
  To: Ivan Safonov, Larry Finger
  Cc: Greg Kroah-Hartman, devel, B K Karthik, linux-kernel

On Sat, 2020-08-01 at 19:52 +0300, Ivan Safonov wrote:
> The function guarantees type checking of arguments and return value.
> 
> Result of rtw_netdev_priv macro can be assigned to pointer
> with incompatible type without warning. The function allow compiler
> to perform this check.
[]
> diff --git a/drivers/staging/rtl8188eu/include/osdep_service.h b/drivers/staging/rtl8188eu/include/osdep_service.h
[]
> @@ -71,8 +71,11 @@ struct rtw_netdev_priv_indicator {
>  };
>  struct net_device *rtw_alloc_etherdev_with_old_priv(void *old_priv);
>  
> -#define rtw_netdev_priv(netdev)					\
> -	(((struct rtw_netdev_priv_indicator *)netdev_priv(netdev))->priv)
> +static inline struct adapter *rtw_netdev_priv(struct net_device *dev)
> +{
> +	return (((struct rtw_netdev_priv_indicator *)netdev_priv(dev))->priv);
> +}

To be similar to existing uses, this variable name should be
netdev not dev.  There are also unnecessary parentheses.

>  void rtw_free_netdev(struct net_device *netdev);

Better to use netdev like this one.

---
static inline struct adapter *rtw_netdev_priv(struct net_device *netdev)
{
	return ((struct rtw_netdev_priv_indicator *)netdev_priv(netdev))->priv;
}



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2020-08-01 16:52 [PATCH v2] staging: r8188eu: replace rtw_netdev_priv define with inline function Ivan Safonov
2020-08-01 17:29 ` Joe Perches

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