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SubjectRe: [PATCH v2] net/wireless/brcm80211/brcmfmac: Make return type and name reflect actual semantics
On 06/22/14 00:55, Rasmus Villemoes wrote:
> Applying ++ to a bool is equivalent to setting it true, regardless of
> its initial value (bools are not uint1_t). Hence the function
> wl_get_vif_state_all can only ever return true/false. The only in-tree
> caller uses its return value as a boolean. So update its return type,
> and since the list traversal and bit testing have no side effects,
> just return true immediately. Its return value tells if any vif is up,

Now I may be really nit-picking, but the return value if any vif is *in
the specified state*.

Regards,
Arend

> so also rename it to brcmf_get_vif_state_any.
>
> Reviewed-by: Arend van Spriel<arend@broadcom.com>
> Signed-off-by: Rasmus Villemoes<linux@rasmusvillemoes.dk>
> ---
>
> Notes:
> v2: Rename wl_get_vif_state_all => brcmf_get_vif_state_any as
> requested by Arend.
>
> drivers/net/wireless/brcm80211/brcmfmac/p2p.c | 2 +-
> drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 7 +++----
> drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h | 2 +-
> 3 files changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c
> index f3445ac..588fdbd 100644
> --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c
> +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c
> @@ -708,7 +708,7 @@ static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,
> active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS;
> else if (num_chans == AF_PEER_SEARCH_CNT)
> active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS;
> - else if (wl_get_vif_state_all(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
> + else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
> active = -1;
> else
> active = P2PAPI_SCAN_DWELL_TIME_MS;
> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
> index d8fa276..93b1809 100644
> --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
> +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
> @@ -5625,16 +5625,15 @@ enum nl80211_iftype brcmf_cfg80211_get_iftype(struct brcmf_if *ifp)
> return wdev->iftype;
> }
>
> -u32 wl_get_vif_state_all(struct brcmf_cfg80211_info *cfg, unsigned long state)
> +bool brcmf_get_vif_state_any(struct brcmf_cfg80211_info *cfg, unsigned long state)
> {
> struct brcmf_cfg80211_vif *vif;
> - bool result = 0;
>
> list_for_each_entry(vif,&cfg->vif_list, list) {
> if (test_bit(state,&vif->sme_state))
> - result++;
> + return true;
> }
> - return result;
> + return false;
> }
>
> static inline bool vif_event_equals(struct brcmf_cfg80211_vif_event *event,
> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h
> index 283c525..f9fb109 100644
> --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h
> +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h
> @@ -477,7 +477,7 @@ const struct brcmf_tlv *
> brcmf_parse_tlvs(const void *buf, int buflen, uint key);
> u16 channel_to_chanspec(struct brcmu_d11inf *d11inf,
> struct ieee80211_channel *ch);
> -u32 wl_get_vif_state_all(struct brcmf_cfg80211_info *cfg, unsigned long state);
> +bool brcmf_get_vif_state_any(struct brcmf_cfg80211_info *cfg, unsigned long state);
> void brcmf_cfg80211_arm_vif_event(struct brcmf_cfg80211_info *cfg,
> struct brcmf_cfg80211_vif *vif);
> bool brcmf_cfg80211_vif_event_armed(struct brcmf_cfg80211_info *cfg);



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