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SubjectRe: [PATCH 4/4] staging: rtl8188eu: include: placed constant on the right side of the test in comparisons
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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
------------------------------------------------------------------------------*/



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