ACK: [SRU][N/M/J][PATCH 0/1] RTL8852BE fw security fail then lost WIFI function during suspend/resume cycle

[Stefan Bader]

On 23.04.24 04:18, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/2063096
> 
> [Impact]
> 
> On a Dell laptop, When we do suspend/resume test, we found the
> realtek wifi couldn't work after resume, from the dmesg, we found
> the error log as below:
> Log:
> 三 05 15:08:02 u-Precision-3591 kernel: rtw89_8852be 0000:02:00.0: fw security fail
> 三 05 15:08:02 u-Precision-3591 kernel: rtw89_8852be 0000:02:00.0: download firmware fail
> 三 05 15:08:02 u-Precision-3591 kernel: rtw89_8852be 0000:02:00.0: [ERR]fwdl 0x1E0 = 0x62
> 三 05 15:08:02 u-Precision-3591 kernel: rtw89_8852be 0000:02:00.0: [ERR]fwdl 0x83F2 = 0x8
> 
> [Fix]
> 
> Backport a commit from mainline kernel (linux-next), this will retry firmware
> loading for 5 times.
> 
> [Test Case]
> 
> run suspend/resume test case for over 100 times, the wifi still
> works.
> 
> [Where problems could occur]
> 
> This commit comes from mailine kernel, and it doesn't change existing
> driver except loading firmware a couple of more times if there is an error.
> In theory this will not introduce regression.
> 
> 
> Chia-Yuan Li (1):
>    wifi: rtw89: download firmware with five times retry
> 
>   drivers/net/wireless/realtek/rtw89/fw.c | 27 +++++++++++++++++++------
>   1 file changed, 21 insertions(+), 6 deletions(-)
> 

Acked-by: Stefan Bader <stefan.bader at canonical.com>
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