* Re: [RFC PATCH] Revert "mwifiex: fix system hang problem after resume"
2017-03-31 20:21 [RFC PATCH] Revert "mwifiex: fix system hang problem after resume" Brian Norris
@ 2017-04-01 16:20 ` Dmitry Torokhov
2017-04-06 4:32 ` amit karwar
2019-08-03 1:06 ` Brian Norris
2 siblings, 0 replies; 7+ messages in thread
From: Dmitry Torokhov @ 2017-04-01 16:20 UTC (permalink / raw)
To: Brian Norris
Cc: Amitkumar Karwar, Nishant Sarmukadam, Kalle Valo, linux-wireless,
linux-kernel, Jeffy Chen
On Fri, Mar 31, 2017 at 01:21:36PM -0700, Brian Norris wrote:
> This reverts commit 437322ea2a36d112e20aa7282c869bf924b3a836.
>
> This above-mentioned "fix" does not actually do anything to prevent a
> race condition. It simply papers over it so that the issue doesn't
> appear.
>
> If this is a real problem, it should be explained better than the above
> commit does, and an alternative, non-racy solution should be found.
>
> For further reason to revert this: there's ot reason we can't try
> resetting the card when it's *actually* stuck in host-sleep mode. So
> instead, this is unnecessarily creating scenarios where we can't recover
> Wifi.
>
> Cc: Amitkumar Karwar <akarwar@marvell.com>
> Signed-off-by: Brian Norris <briannorris@chromium.org>
FWIW:
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
> Amit, please take a look. AIUI, your "fix" is wrong, and quite racy. If you
> still think it's needed, can you please propose an alternative? Or at least
> explain more why this is needed? Thanks.
>
> drivers/net/wireless/marvell/mwifiex/init.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/init.c b/drivers/net/wireless/marvell/mwifiex/init.c
> index 756948385b60..0dab77b526de 100644
> --- a/drivers/net/wireless/marvell/mwifiex/init.c
> +++ b/drivers/net/wireless/marvell/mwifiex/init.c
> @@ -60,7 +60,7 @@ static void wakeup_timer_fn(unsigned long data)
> adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
> mwifiex_cancel_all_pending_cmd(adapter);
>
> - if (adapter->if_ops.card_reset && !adapter->hs_activated)
> + if (adapter->if_ops.card_reset)
> adapter->if_ops.card_reset(adapter);
> }
>
> --
> 2.12.2.564.g063fe858b8-goog
>
--
Dmitry
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [RFC PATCH] Revert "mwifiex: fix system hang problem after resume"
2017-03-31 20:21 [RFC PATCH] Revert "mwifiex: fix system hang problem after resume" Brian Norris
2017-04-01 16:20 ` Dmitry Torokhov
@ 2017-04-06 4:32 ` amit karwar
2019-08-03 1:06 ` Brian Norris
2 siblings, 0 replies; 7+ messages in thread
From: amit karwar @ 2017-04-06 4:32 UTC (permalink / raw)
To: Brian Norris
Cc: Amitkumar Karwar, Nishant Sarmukadam, Kalle Valo, linux-wireless,
linux-kernel, Dmitry Torokhov, Jeffy Chen
On Sat, Apr 1, 2017 at 1:51 AM, Brian Norris <briannorris@chromium.org> wrote:
> This reverts commit 437322ea2a36d112e20aa7282c869bf924b3a836.
>
> This above-mentioned "fix" does not actually do anything to prevent a
> race condition. It simply papers over it so that the issue doesn't
> appear.
>
> If this is a real problem, it should be explained better than the above
> commit does, and an alternative, non-racy solution should be found.
>
> For further reason to revert this: there's ot reason we can't try
> resetting the card when it's *actually* stuck in host-sleep mode. So
> instead, this is unnecessarily creating scenarios where we can't recover
> Wifi.
>
> Cc: Amitkumar Karwar <akarwar@marvell.com>
> Signed-off-by: Brian Norris <briannorris@chromium.org>
> ---
> Amit, please take a look. AIUI, your "fix" is wrong, and quite racy. If you
> still think it's needed, can you please propose an alternative? Or at least
> explain more why this is needed? Thanks.
>
I agree. Fix just covers the issue. We need to investigate why system
hangs when card reset is attempted in host sleep activated scenario.
Acked-by: Amitkumar Karwar <amitkarwar@gmail.com>
Regards,
Amitkumar Karwar
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [RFC PATCH] Revert "mwifiex: fix system hang problem after resume"
2017-03-31 20:21 [RFC PATCH] Revert "mwifiex: fix system hang problem after resume" Brian Norris
2017-04-01 16:20 ` Dmitry Torokhov
2017-04-06 4:32 ` amit karwar
@ 2019-08-03 1:06 ` Brian Norris
2019-08-03 1:55 ` Kalle Valo
2 siblings, 1 reply; 7+ messages in thread
From: Brian Norris @ 2019-08-03 1:06 UTC (permalink / raw)
To: Amitkumar Karwar, Nishant Sarmukadam, Ganapathi Bhat, Xinming Hu,
Kalle Valo
Cc: Kalle Valo, linux-wireless, linux-kernel, Dmitry Torokhov,
Jeffy Chen, Doug Anderson, Matthias Kaehlcke
+ Doug, Matthias, who are seeing problems (or, failure to try to
recover, as predicted below)
+ Amit's new email
+ new maintainers
Perhaps it's my fault for marking this RFC. But I changed the status
back to "New" in Patchwork, in case that helps:
On Fri, Mar 31, 2017 at 01:21:36PM -0700, Brian Norris wrote:
> This reverts commit 437322ea2a36d112e20aa7282c869bf924b3a836.
>
> This above-mentioned "fix" does not actually do anything to prevent a
> race condition. It simply papers over it so that the issue doesn't
> appear.
>
> If this is a real problem, it should be explained better than the above
> commit does, and an alternative, non-racy solution should be found.
>
> For further reason to revert this: there's ot reason we can't try
s/ot/no/
...oops.
> resetting the card when it's *actually* stuck in host-sleep mode. So
> instead, this is unnecessarily creating scenarios where we can't recover
> Wifi.
>
> Cc: Amitkumar Karwar <akarwar@marvell.com>
> Signed-off-by: Brian Norris <briannorris@chromium.org>
> ---
> Amit, please take a look. AIUI, your "fix" is wrong, and quite racy. If you
> still think it's needed, can you please propose an alternative? Or at least
> explain more why this is needed? Thanks.
FWIW, I got an Acked-by from Amit when he was still at Marvell. And
another Reviewed-by from Dmitry. This still applies. Should I resend?
(I'll do that if I don't hear a response within a few days.)
Thanks,
Brian
> drivers/net/wireless/marvell/mwifiex/init.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/init.c b/drivers/net/wireless/marvell/mwifiex/init.c
> index 756948385b60..0dab77b526de 100644
> --- a/drivers/net/wireless/marvell/mwifiex/init.c
> +++ b/drivers/net/wireless/marvell/mwifiex/init.c
> @@ -60,7 +60,7 @@ static void wakeup_timer_fn(unsigned long data)
> adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
> mwifiex_cancel_all_pending_cmd(adapter);
>
> - if (adapter->if_ops.card_reset && !adapter->hs_activated)
> + if (adapter->if_ops.card_reset)
> adapter->if_ops.card_reset(adapter);
> }
>
> --
> 2.12.2.564.g063fe858b8-goog
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [RFC PATCH] Revert "mwifiex: fix system hang problem after resume"
2019-08-03 1:06 ` Brian Norris
@ 2019-08-03 1:55 ` Kalle Valo
2019-08-03 2:02 ` Brian Norris
0 siblings, 1 reply; 7+ messages in thread
From: Kalle Valo @ 2019-08-03 1:55 UTC (permalink / raw)
To: Brian Norris
Cc: Amitkumar Karwar, Nishant Sarmukadam, Ganapathi Bhat, Xinming Hu,
linux-wireless, linux-kernel, Dmitry Torokhov, Jeffy Chen,
Doug Anderson, Matthias Kaehlcke
Brian Norris <briannorris@chromium.org> writes:
> + Doug, Matthias, who are seeing problems (or, failure to try to
> recover, as predicted below)
> + Amit's new email
> + new maintainers
>
> Perhaps it's my fault for marking this RFC. But I changed the status
> back to "New" in Patchwork, in case that helps:
But I still see it marked as RFC. So the patch in question is:
https://patchwork.kernel.org/patch/9657277/
Changing the patchwork state to RFC means that it's dropped and out of
my radar. Also, if I see "RFC" in the subject I assume that's a patch
which I should not apply by default.
> On Fri, Mar 31, 2017 at 01:21:36PM -0700, Brian Norris wrote:
>> This reverts commit 437322ea2a36d112e20aa7282c869bf924b3a836.
>>
>> This above-mentioned "fix" does not actually do anything to prevent a
>> race condition. It simply papers over it so that the issue doesn't
>> appear.
>>
>> If this is a real problem, it should be explained better than the above
>> commit does, and an alternative, non-racy solution should be found.
>>
>> For further reason to revert this: there's ot reason we can't try
>
> s/ot/no/
>
> ...oops.
>
>> resetting the card when it's *actually* stuck in host-sleep mode. So
>> instead, this is unnecessarily creating scenarios where we can't recover
>> Wifi.
>>
>> Cc: Amitkumar Karwar <akarwar@marvell.com>
>> Signed-off-by: Brian Norris <briannorris@chromium.org>
>> ---
>> Amit, please take a look. AIUI, your "fix" is wrong, and quite racy. If you
>> still think it's needed, can you please propose an alternative? Or at least
>> explain more why this is needed? Thanks.
>
> FWIW, I got an Acked-by from Amit when he was still at Marvell. And
> another Reviewed-by from Dmitry. This still applies. Should I resend?
> (I'll do that if I don't hear a response within a few days.)
This patch is from 2017 so better to resend, and without RFC markings.
--
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [RFC PATCH] Revert "mwifiex: fix system hang problem after resume"
2019-08-03 1:55 ` Kalle Valo
@ 2019-08-03 2:02 ` Brian Norris
2019-08-03 2:08 ` Kalle Valo
0 siblings, 1 reply; 7+ messages in thread
From: Brian Norris @ 2019-08-03 2:02 UTC (permalink / raw)
To: Kalle Valo
Cc: Amitkumar Karwar, Nishant Sarmukadam, Ganapathi Bhat, Xinming Hu,
linux-wireless, Linux Kernel, Dmitry Torokhov, Jeffy Chen,
Doug Anderson, Matthias Kaehlcke
On Fri, Aug 2, 2019 at 6:55 PM Kalle Valo <kvalo@codeaurora.org> wrote:
>
> Brian Norris <briannorris@chromium.org> writes:
>
> > + Doug, Matthias, who are seeing problems (or, failure to try to
> > recover, as predicted below)
> > + Amit's new email
> > + new maintainers
> >
> > Perhaps it's my fault for marking this RFC. But I changed the status
> > back to "New" in Patchwork, in case that helps:
>
> But I still see it marked as RFC. So the patch in question is:
>
> https://patchwork.kernel.org/patch/9657277/
Oops, I didn't hit the "Update" button :(
I changed it now, but I'll change it back again.
> Changing the patchwork state to RFC means that it's dropped and out of
> my radar. Also, if I see "RFC" in the subject I assume that's a patch
> which I should not apply by default.
Ack. Well, there were some "RFCs" I sent recently that you *did*
apply, so I didn't really know what happens normally.
> > On Fri, Mar 31, 2017 at 01:21:36PM -0700, Brian Norris wrote:
...
> > FWIW, I got an Acked-by from Amit when he was still at Marvell. And
> > another Reviewed-by from Dmitry. This still applies. Should I resend?
> > (I'll do that if I don't hear a response within a few days.)
>
> This patch is from 2017 so better to resend, and without RFC markings.
Yep, will do.
Brian
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [RFC PATCH] Revert "mwifiex: fix system hang problem after resume"
2019-08-03 2:02 ` Brian Norris
@ 2019-08-03 2:08 ` Kalle Valo
0 siblings, 0 replies; 7+ messages in thread
From: Kalle Valo @ 2019-08-03 2:08 UTC (permalink / raw)
To: Brian Norris
Cc: Amitkumar Karwar, Nishant Sarmukadam, Ganapathi Bhat, Xinming Hu,
linux-wireless, Linux Kernel, Dmitry Torokhov, Jeffy Chen,
Doug Anderson, Matthias Kaehlcke
Brian Norris <briannorris@chromium.org> writes:
>> Changing the patchwork state to RFC means that it's dropped and out of
>> my radar. Also, if I see "RFC" in the subject I assume that's a patch
>> which I should not apply by default.
>
> Ack. Well, there were some "RFCs" I sent recently that you *did*
> apply, so I didn't really know what happens normally.
True, I have sometimes applied RFC patches in case they look good enough
and I do not want them to get lost (and this is a good example of RFC
patches getting lost). But by default I drop RFC patches after a quick
glance.
>> > On Fri, Mar 31, 2017 at 01:21:36PM -0700, Brian Norris wrote:
> ...
>> > FWIW, I got an Acked-by from Amit when he was still at Marvell. And
>> > another Reviewed-by from Dmitry. This still applies. Should I resend?
>> > (I'll do that if I don't hear a response within a few days.)
>>
>> This patch is from 2017 so better to resend, and without RFC markings.
>
> Yep, will do.
Thanks.
--
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 7+ messages in thread