** Description changed:
- This is for tracking purpose
+ [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.
** Changed in: linux-oem-6.5 (Ubuntu Mantic)
Status: New => Invalid
** Changed in: linux-oem-6.5 (Ubuntu Noble)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2063096
Title:
RTL8852BE fw security fail then lost WIFI function during
suspend/resume cycle
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