linux-kernel - Re: [PATCH V2] ath10k: don't fail if IRAM write fails

Open Source and information security mailing list archives

Message-ID: <CAKzrAgQcT=X0JtqoVWiTEhqSDcN-4XSW2xW6dWLsVo_OZt+hEw@mail.gmail.com>
Date:   Sat, 18 Sep 2021 14:21:10 +0300
From:   "ojab //" <ojab@...b.ru>
To:     "sparks71@....de" <sparks71@....de>
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, ath10k@...ts.infradead.org,
        Linux Wireless <linux-wireless@...r.kernel.org>,
        netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] ath10k: don't fail if IRAM write fails

oh, awesome. Thanks!

//wbr ojab

On Sat, 18 Sept 2021 at 13:12, sparks71@....de <sparks71@....de> wrote:
>
> Have you seen the new patch?
>
> https://www.mail-archive.com/ath10k@lists.infradead.org/msg13784.html
>
> https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=master-pending&id=973de582639a1e45276e4e3e2f3c2d82a04ad0a6
>
>
> could probably have been communicated better
>
>
> best regards
>
>
>
> Am 17.09.21 um 21:30 schrieb ojab //:
> > ._.
> >
> > //wbr ojab
> >
> > On Thu, 9 Sept 2021 at 02:42, ojab // <ojab@...b.ru> wrote:
> >> Gentle ping.
> >>
> >> //wbr ojab
> >>
> >> On Wed, 25 Aug 2021 at 19:15, ojab // <ojab@...b.ru> wrote:
> >>> Can I haz it merged?
> >>>
> >>> //wbr ojab
> >>>
> >>> On Thu, 22 Jul 2021 at 22:36, ojab <ojab@...b.ru> wrote:
> >>>> After reboot with kernel & firmware updates I found `failed to copy
> >>>> target iram contents:` in dmesg and missing wlan interfaces for both
> >>>> of my QCA9984 compex cards. Rolling back kernel/firmware didn't fixed
> >>>> it, so while I have no idea what's actually happening, I don't see why
> >>>> we should fail in this case, looks like some optional firmware ability
> >>>> that could be skipped.
> >>>>
> >>>> Also with additional logging there is
> >>>> ```
> >>>> [    6.839858] ath10k_pci 0000:04:00.0: No hardware memory
> >>>> [    6.841205] ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
> >>>> [    6.873578] ath10k_pci 0000:07:00.0: No hardware memory
> >>>> [    6.875052] ath10k_pci 0000:07:00.0: failed to copy target iram contents: -12
> >>>> ```
> >>>> so exact branch could be seen.
> >>>>
> >>>> Signed-off-by: Slava Kardakov <ojab@...b.ru>
> >>>> ---
> >>>>   Of course I forgot to sing off, since I don't use it by default because I
> >>>>   hate my real name and kernel requires it
> >>>>
> >>>>   drivers/net/wireless/ath/ath10k/core.c | 9 ++++++---
> >>>>   1 file changed, 6 insertions(+), 3 deletions(-)
> >>>>
> >>>> diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
> >>>> index 2f9be182fbfb..d9fd5294e142 100644
> >>>> --- a/drivers/net/wireless/ath/ath10k/core.c
> >>>> +++ b/drivers/net/wireless/ath/ath10k/core.c
> >>>> @@ -2691,8 +2691,10 @@ static int ath10k_core_copy_target_iram(struct ath10k *ar)
> >>>>          u32 len, remaining_len;
> >>>>
> >>>>          hw_mem = ath10k_coredump_get_mem_layout(ar);
> >>>> -       if (!hw_mem)
> >>>> +       if (!hw_mem) {
> >>>> +               ath10k_warn(ar, "No hardware memory");
> >>>>                  return -ENOMEM;
> >>>> +       }
> >>>>
> >>>>          for (i = 0; i < hw_mem->region_table.size; i++) {
> >>>>                  tmp = &hw_mem->region_table.regions[i];
> >>>> @@ -2702,8 +2704,10 @@ static int ath10k_core_copy_target_iram(struct ath10k *ar)
> >>>>                  }
> >>>>          }
> >>>>
> >>>> -       if (!mem_region)
> >>>> +       if (!mem_region) {
> >>>> +               ath10k_warn(ar, "No memory region");
> >>>>                  return -ENOMEM;
> >>>> +       }
> >>>>
> >>>>          for (i = 0; i < ar->wmi.num_mem_chunks; i++) {
> >>>>                  if (ar->wmi.mem_chunks[i].req_id ==
> >>>> @@ -2917,7 +2921,6 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode,
> >>>>                  if (status) {
> >>>>                          ath10k_warn(ar, "failed to copy target iram contents: %d",
> >>>>                                      status);
> >>>> -                       goto err_hif_stop;
> >>>>                  }
> >>>>          }
> >>>>
> >>>> --
> >>>> 2.32.0
> > _______________________________________________
> > ath10k mailing list
> > ath10k@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/ath10k
> >
> >
>

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives