STI problem and workaround for Dell XPS 13 (Skylake, 2016) / Broadcom BCM4350

[Tamas Papp <tkpapp@gmail.com>]

Hi,

I have a Dell XPS 13 (Skylake, 2016) and wanted to get STI working, so I
followed the instructions at [1]. I found that the Broadcom wireless
chip is waking the machine up from STI / freeze.

A workaround is

INTERFACE=wlp58s0
ifconfig $INTERFACE down
modprobe -r brcmfmac && echo freeze > /sys/power/state && modprobe brcmfmac
ifconfig $INTERFACE up

I thought I would ask whether I should report this as a bug, and if yes,
where.

Best,

Tamas

[1] https://01.org/blogs/rzhang/2015/best-practice-debug-linux-suspend/hibernate-issues

Hardware info (lspci -v):

3a:00.0 Network controller: Broadcom Corporation BCM4350 802.11ac Wireless Network Adapter (rev 08)
	Subsystem: Dell BCM4350 802.11ac Wireless Network Adapter
	Flags: bus master, fast devsel, latency 0, IRQ 283
	Memory at dc400000 (64-bit, non-prefetchable) [size=32K]
	Memory at dc000000 (64-bit, non-prefetchable) [size=4M]
	Capabilities: [48] Power Management version 3
	Capabilities: [58] MSI: Enable+ Count=1/16 Maskable- 64bit+
	Capabilities: [68] Vendor Specific Information: Len=44 <?>
	Capabilities: [ac] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [13c] Device Serial Number 00-00-28-ff-ff-77-c8-ff
	Capabilities: [150] Power Budgeting <?>
	Capabilities: [160] Virtual Channel
	Capabilities: [1b0] Latency Tolerance Reporting
	Capabilities: [220] #15
	Capabilities: [240] L1 PM Substates
	Kernel driver in use: brcmfmac
	Kernel modules: brcmfmac