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

Open Source and information security mailing list archives

Message-ID: <538825a2-82f0-6102-01da-6e0385e53cf5@gmx.de>
Date:   Sat, 18 Sep 2021 12:12:23 +0200
From:   "sparks71@....de" <sparks71@....de>
To:     ojab // <ojab@...b.ru>, Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     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

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