2020-07-18 09:22:22

by B K Karthik

[permalink] [raw]
Subject: [PATCH 4/4] staging: rtl8188eu: include: placed constant on the right side of the test in comparisons

placed constant on the right side of the test
to fix warnings issued by checkpatch

Signed-off-by: B K Karthik <[email protected]>
---
drivers/staging/rtl8188eu/include/rtw_mlme.h | 4 ++--
drivers/staging/rtl8188eu/include/wifi.h | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/rtl8188eu/include/rtw_mlme.h b/drivers/staging/rtl8188eu/include/rtw_mlme.h
index 010f0c42368a..1b74b32b8a81 100644
--- a/drivers/staging/rtl8188eu/include/rtw_mlme.h
+++ b/drivers/staging/rtl8188eu/include/rtw_mlme.h
@@ -266,7 +266,7 @@ static inline void set_fwstate(struct mlme_priv *pmlmepriv, int state)
{
pmlmepriv->fw_state |= state;
/* FOR HW integration */
- if (_FW_UNDER_SURVEY == state)
+ if (state == _FW_UNDER_SURVEY)
pmlmepriv->bScanInProcess = true;
}

@@ -274,7 +274,7 @@ static inline void _clr_fwstate_(struct mlme_priv *pmlmepriv, int state)
{
pmlmepriv->fw_state &= ~state;
/* FOR HW integration */
- if (_FW_UNDER_SURVEY == state)
+ if (state == _FW_UNDER_SURVEY)
pmlmepriv->bScanInProcess = false;
}

diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
index 677827900607..dcef3da21970 100644
--- a/drivers/staging/rtl8188eu/include/wifi.h
+++ b/drivers/staging/rtl8188eu/include/wifi.h
@@ -326,7 +326,7 @@ static inline unsigned char *get_hdr_bssid(unsigned char *pframe)

static inline int IsFrameTypeCtrl(unsigned char *pframe)
{
- if (WIFI_CTRL_TYPE == GetFrameType(pframe))
+ if (GetFrameType(pframe) == WIFI_CTRL_TYPE)
return true;
else
return false;
--
2.20.1


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2020-07-18 13:17:54

by Joe Perches

[permalink] [raw]
Subject: Re: [PATCH 4/4] staging: rtl8188eu: include: placed constant on the right side of the test in comparisons

On Sat, 2020-07-18 at 05:18 -0400, B K Karthik wrote:
> placed constant on the right side of the test
> to fix warnings issued by checkpatch
[]
> diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
[]
> @@ -326,7 +326,7 @@ static inline unsigned char *get_hdr_bssid(unsigned char *pframe)
>
> static inline int IsFrameTypeCtrl(unsigned char *pframe)
> {
> - if (WIFI_CTRL_TYPE == GetFrameType(pframe))
> + if (GetFrameType(pframe) == WIFI_CTRL_TYPE)
> return true;
> else
> return false;

Always try to improve code instead of merely shutting
up checkpatch warnings.

This function should likely be written:

static inline bool IsFrameTypeCtrl(unsigned char *pframe)
{
return GetFrameType(pframe) == WIFI_CTRL_TYPE;
}

and given it's used only once, it might be expanded
in that place and removed altogether.

Something like:

(and the memcmp below could be ether_addr_equal instead
but I'm too lazy to find out if the addresses are both
guaranteed to be __aligned(2) which is likely)

---
drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c | 8 +++++---
drivers/staging/rtl8188eu/include/wifi.h | 7 -------
2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c b/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c
index 7d0135fde795..a2994f9ecbde 100644
--- a/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c
+++ b/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c
@@ -144,10 +144,12 @@ void update_recvframe_phyinfo_88e(struct recv_frame *precvframe,

wlanhdr = precvframe->pkt->data;

- pkt_info.bPacketMatchBSSID = ((!IsFrameTypeCtrl(wlanhdr)) &&
- !pattrib->icv_err && !pattrib->crc_err &&
+ pkt_info.bPacketMatchBSSID =
+ GetFrameType(wlanhdr) != WIFI_CTRL_TYPE &&
+ !pattrib->icv_err &&
+ !pattrib->crc_err &&
!memcmp(get_hdr_bssid(wlanhdr),
- get_bssid(&padapter->mlmepriv), ETH_ALEN));
+ get_bssid(&padapter->mlmepriv), ETH_ALEN);

pkt_info.bPacketToSelf = pkt_info.bPacketMatchBSSID &&
(!memcmp(get_da(wlanhdr),
diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
index 791f287a546d..3998d5633860 100644
--- a/drivers/staging/rtl8188eu/include/wifi.h
+++ b/drivers/staging/rtl8188eu/include/wifi.h
@@ -324,13 +324,6 @@ static inline unsigned char *get_hdr_bssid(unsigned char *pframe)
return sa;
}

-static inline int IsFrameTypeCtrl(unsigned char *pframe)
-{
- if (WIFI_CTRL_TYPE == GetFrameType(pframe))
- return true;
- else
- return false;
-}
/*-----------------------------------------------------------------------------
Below is for the security related definition
------------------------------------------------------------------------------*/




2020-07-18 13:37:07

by B K Karthik

[permalink] [raw]
Subject: Re: [PATCH 4/4] staging: rtl8188eu: include: placed constant on the right side of the test in comparisons

On Sat, Jul 18, 2020 at 9:17 AM Joe Perches <[email protected]> wrote:
>
> On Sat, 2020-07-18 at 05:18 -0400, B K Karthik wrote:
> > placed constant on the right side of the test
> > to fix warnings issued by checkpatch
> []
> > diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
> []
> > @@ -326,7 +326,7 @@ static inline unsigned char *get_hdr_bssid(unsigned char *pframe)
> >
> > static inline int IsFrameTypeCtrl(unsigned char *pframe)
> > {
> > - if (WIFI_CTRL_TYPE == GetFrameType(pframe))
> > + if (GetFrameType(pframe) == WIFI_CTRL_TYPE)
> > return true;
> > else
> > return false;
>
> Always try to improve code instead of merely shutting
> up checkpatch warnings.
>
> This function should likely be written:
>
> static inline bool IsFrameTypeCtrl(unsigned char *pframe)
> {
> return GetFrameType(pframe) == WIFI_CTRL_TYPE;
> }
>
> and given it's used only once, it might be expanded
> in that place and removed altogether.
>
> Something like:
>
> (and the memcmp below could be ether_addr_equal instead
> but I'm too lazy to find out if the addresses are both
> guaranteed to be __aligned(2) which is likely)

Alright, I will try to do that and send a v2 asap :)
>
> ---
> drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c | 8 +++++---
> drivers/staging/rtl8188eu/include/wifi.h | 7 -------
> 2 files changed, 5 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c b/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c
> index 7d0135fde795..a2994f9ecbde 100644
> --- a/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c
> +++ b/drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c
> @@ -144,10 +144,12 @@ void update_recvframe_phyinfo_88e(struct recv_frame *precvframe,
>
> wlanhdr = precvframe->pkt->data;
>
> - pkt_info.bPacketMatchBSSID = ((!IsFrameTypeCtrl(wlanhdr)) &&
> - !pattrib->icv_err && !pattrib->crc_err &&
> + pkt_info.bPacketMatchBSSID =
> + GetFrameType(wlanhdr) != WIFI_CTRL_TYPE &&
> + !pattrib->icv_err &&
> + !pattrib->crc_err &&
> !memcmp(get_hdr_bssid(wlanhdr),
> - get_bssid(&padapter->mlmepriv), ETH_ALEN));
> + get_bssid(&padapter->mlmepriv), ETH_ALEN);
>
> pkt_info.bPacketToSelf = pkt_info.bPacketMatchBSSID &&
> (!memcmp(get_da(wlanhdr),
> diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
> index 791f287a546d..3998d5633860 100644
> --- a/drivers/staging/rtl8188eu/include/wifi.h
> +++ b/drivers/staging/rtl8188eu/include/wifi.h
> @@ -324,13 +324,6 @@ static inline unsigned char *get_hdr_bssid(unsigned char *pframe)
> return sa;
> }
>
> -static inline int IsFrameTypeCtrl(unsigned char *pframe)
> -{
> - if (WIFI_CTRL_TYPE == GetFrameType(pframe))
> - return true;
> - else
> - return false;
> -}
> /*-----------------------------------------------------------------------------
> Below is for the security related definition
> ------------------------------------------------------------------------------*/

thank you for pointing me.

karthik