This bug is awaiting verification that the linux-starfive/6.2.0-1004.5
kernel in -proposed solves the problem. Please test the kernel and
update this bug with the results. If the problem is solved, change the
tag 'verification-needed-lunar-linux-starfive' to 'verification-done-
lunar-linux-starfive'. If the problem still exists, change the tag
'verification-needed-lunar-linux-starfive' to 'verification-failed-
lunar-linux-starfive'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-lunar-linux-starfive-v2 
verification-needed-lunar-linux-starfive

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.1 in Ubuntu.
https://bugs.launchpad.net/bugs/2020743

Title:
  FM350(mtk_t7xx) failed to suspend, or early wake while suspending

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Won't Fix
Status in linux-oem-6.1 source package in Jammy:
  Fix Released
Status in linux source package in Kinetic:
  Won't Fix
Status in linux-oem-6.1 source package in Kinetic:
  Invalid
Status in linux source package in Lunar:
  Fix Committed
Status in linux-oem-6.1 source package in Lunar:
  Invalid
Status in linux source package in Mantic:
  Fix Released
Status in linux-oem-6.1 source package in Mantic:
  Invalid

Bug description:
  [Impact]
  FM350(mtk_t7xx) can't suspend sometimes.

  kernel: [ 12.917396] mtk_t7xx 0000:57:00.0: [PM] Exiting suspend, modem in 
invalid state
  kernel: [ 12.917406] mtk_t7xx 0000:57:00.0: PM: pci_pm_suspend(): 
t7xx_pci_pm_suspend+0x0/0x20 [mtk_t7xx] returns -14
  kernel: [ 12.917446] mtk_t7xx 0000:57:00.0: PM: dpm_run_callback(): 
pci_pm_suspend+0x0/0x1b0 returns -14
  kernel: [ 12.917462] mtk_t7xx 0000:57:00.0: PM: failed to suspend async: 
error -14

  [Fix]
  The commit in v6.4-rc3 waits for the device to be ready before suspending.
  ab87603b2511 net: wwan: t7xx: Ensure init is completed before system sleep

  [Test]
  Verified on the machine with FM350 wwan module.

  [Where problems could occur]
  If the wwan is not ready before the time is up, it results in -ETIMEDOUT. 
However, in this scenario, we will encounter the same issue where the system 
fails to enter suspend mode. Therefore, it will not introduce regressions or 
new issues.

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