Public bug reported:
[Impact]
After this linux-firmware bug[1] update the firmware files, it removes
intel/ibt-11-16.{ddc,sfi} and add intel/ibt-12-16.{ddc,sfi}, but in btusb
driver, it hardcoded the hw_variant as 11. So we got this kind of error after
the linux-firmware package updated and lost the bt functions.
[ 5.516003] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[ 5.516181] bluetooth hci0: Direct firmware load for intel/ibt-11-16.sfi
failed with error -2
[ 5.516183] Bluetooth: hci0: Failed to load Intel firmware file (-2)
[Fix]
This patch uses a hw_variant variable to replace the hardcoded 11.
[Test Case]
Verified on the machine has this issue, and confirm this patch works.
[Regression Potential]
The hw_variant variable has shown up since kernel 3.10 in this commit
dffd30e Bluetooth: Add support for Intel Bluetooth device [8087:07dc]
So, we don't have to worry about old chips don't contains this info, since it
exists
and be used for a very long time.
1. https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1686815
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
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https://bugs.launchpad.net/bugs/1705633
Title:
[8087:0a2b] Failed to load bluetooth firmware(might affect some other
Intel bt devices)
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