* [BUG REPORT] brcmfmac: wrong logic in finding control/primary channel relative location
@ 2014-12-20 18:25 Rafał Miłecki
2014-12-21 13:03 ` Arend van Spriel
0 siblings, 1 reply; 4+ messages in thread
From: Rafał Miłecki @ 2014-12-20 18:25 UTC (permalink / raw)
To: Brett Rudley, Arend van Spriel, Franky (Zhenhui) Lin,
Hante Meuleman, brcm80211-dev-list
Cc: linux-wireless, Rafał Miłecki
---
Hi guys,
Let me report something I think is a bug in this unusual-patch way ;)
---
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 39b45c0..2c9e88b 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -313,11 +313,13 @@ static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf,
case NL80211_CHAN_WIDTH_80:
ch_inf.bw = BRCMU_CHAN_BW_80;
if (primary_offset < 0) {
+ /* FIXME: We compare frequencies offset with a value -2. Looks like a wrong logic. */
if (primary_offset < -CH_10MHZ_APART)
ch_inf.sb = BRCMU_CHAN_SB_UU;
else
ch_inf.sb = BRCMU_CHAN_SB_UL;
} else {
+ /* FIXME: We compare frequencies offset with a value 2. Looks like a wrong logic. */
if (primary_offset > CH_10MHZ_APART)
ch_inf.sb = BRCMU_CHAN_SB_LL;
else
--
1.8.4.5
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [BUG REPORT] brcmfmac: wrong logic in finding control/primary channel relative location
2014-12-20 18:25 [BUG REPORT] brcmfmac: wrong logic in finding control/primary channel relative location Rafał Miłecki
@ 2014-12-21 13:03 ` Arend van Spriel
2015-05-31 8:18 ` Rafał Miłecki
0 siblings, 1 reply; 4+ messages in thread
From: Arend van Spriel @ 2014-12-21 13:03 UTC (permalink / raw)
To: Rafał Miłecki
Cc: Brett Rudley, Franky (Zhenhui) Lin, Hante Meuleman,
brcm80211-dev-list, linux-wireless
On 12/20/14 19:25, Rafał Miłecki wrote:
> ---
> Hi guys,
>
> Let me report something I think is a bug in this unusual-patch way ;)
> ---
> drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
> index 39b45c0..2c9e88b 100644
> --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
> +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
> @@ -313,11 +313,13 @@ static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf,
> case NL80211_CHAN_WIDTH_80:
> ch_inf.bw = BRCMU_CHAN_BW_80;
> if (primary_offset< 0) {
> + /* FIXME: We compare frequencies offset with a value -2. Looks like a wrong logic. */
> if (primary_offset< -CH_10MHZ_APART)
You are right. The primary_offset is in MHz, but the logical expression
is for channel spacing (1 channel == 5MHz). So here it should be -10
instead. Thanks for reporting this.
Regards,
Arend
> ch_inf.sb = BRCMU_CHAN_SB_UU;
> else
> ch_inf.sb = BRCMU_CHAN_SB_UL;
> } else {
> + /* FIXME: We compare frequencies offset with a value 2. Looks like a wrong logic. */
> if (primary_offset> CH_10MHZ_APART)
> ch_inf.sb = BRCMU_CHAN_SB_LL;
> else
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [BUG REPORT] brcmfmac: wrong logic in finding control/primary channel relative location
2014-12-21 13:03 ` Arend van Spriel
@ 2015-05-31 8:18 ` Rafał Miłecki
2015-06-01 11:55 ` Arend van Spriel
0 siblings, 1 reply; 4+ messages in thread
From: Rafał Miłecki @ 2015-05-31 8:18 UTC (permalink / raw)
To: Arend van Spriel
Cc: Brett Rudley, Franky (Zhenhui) Lin, Hante Meuleman,
brcm80211 development, linux-wireless
On 21 December 2014 at 14:03, Arend van Spriel <arend@broadcom.com> wrote:
> On 12/20/14 19:25, Rafał Miłecki wrote:
>> Hi guys,
>>
>> Let me report something I think is a bug in this unusual-patch way ;)
>> ---
>> drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>> b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>> index 39b45c0..2c9e88b 100644
>> --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>> +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>> @@ -313,11 +313,13 @@ static u16 chandef_to_chanspec(struct brcmu_d11inf
>> *d11inf,
>> case NL80211_CHAN_WIDTH_80:
>> ch_inf.bw = BRCMU_CHAN_BW_80;
>> if (primary_offset< 0) {
>> + /* FIXME: We compare frequencies offset with a
>> value -2. Looks like a wrong logic. */
>> if (primary_offset< -CH_10MHZ_APART)
>
>
> You are right. The primary_offset is in MHz, but the logical expression is
> for channel spacing (1 channel == 5MHz). So here it should be -10 instead.
> Thanks for reporting this.
Will you fix it?
--
Rafał
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [BUG REPORT] brcmfmac: wrong logic in finding control/primary channel relative location
2015-05-31 8:18 ` Rafał Miłecki
@ 2015-06-01 11:55 ` Arend van Spriel
0 siblings, 0 replies; 4+ messages in thread
From: Arend van Spriel @ 2015-06-01 11:55 UTC (permalink / raw)
To: Rafał Miłecki
Cc: Brett Rudley, Franky (Zhenhui) Lin, Hante Meuleman,
brcm80211 development, linux-wireless
On 05/31/15 10:18, Rafał Miłecki wrote:
> On 21 December 2014 at 14:03, Arend van Spriel<arend@broadcom.com> wrote:
>> On 12/20/14 19:25, Rafał Miłecki wrote:
>>> Hi guys,
>>>
>>> Let me report something I think is a bug in this unusual-patch way ;)
>>> ---
>>> drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 2 ++
>>> 1 file changed, 2 insertions(+)
>>>
>>> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>>> b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>>> index 39b45c0..2c9e88b 100644
>>> --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>>> +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
>>> @@ -313,11 +313,13 @@ static u16 chandef_to_chanspec(struct brcmu_d11inf
>>> *d11inf,
>>> case NL80211_CHAN_WIDTH_80:
>>> ch_inf.bw = BRCMU_CHAN_BW_80;
>>> if (primary_offset< 0) {
>>> + /* FIXME: We compare frequencies offset with a
>>> value -2. Looks like a wrong logic. */
>>> if (primary_offset< -CH_10MHZ_APART)
>>
>>
>> You are right. The primary_offset is in MHz, but the logical expression is
>> for channel spacing (1 channel == 5MHz). So here it should be -10 instead.
>> Thanks for reporting this.
>
> Will you fix it?
Completely forgot about this one. Feel free to submit a patch for it.
Regards,
Arend
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-06-01 11:55 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2014-12-20 18:25 [BUG REPORT] brcmfmac: wrong logic in finding control/primary channel relative location Rafał Miłecki
2014-12-21 13:03 ` Arend van Spriel
2015-05-31 8:18 ` Rafał Miłecki
2015-06-01 11:55 ` Arend van Spriel
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