[PATCH wireless-next v2] wifi: brcmfmac: Improve D3 substate entering timeout handling

[Arend van Spriel]

On Tue, 15 Sep 2026 02:50:39 +0200, Sebastian Reichel wrote:
> Some firmwares (e.g. BCM43752) do not service the D3_INFORM mailbox
> handshake when idle, so the D3 ACK never arrives. If WoWL is not armed
> the device is going to be powered off during system suspend and
> re-probed on resume anyway (brcmf_pcie_pm_leave_D3() handles that), so
> the missing ACK is harmless and must not abort the whole system suspend.
> When WoWL is active the device has to stay powered with its state
> preserved, so keep treating the timeout as fatal.

Acked-by: Arend van Spriel <arend.vanspriel at broadcom.com>

> Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
> ---
>  drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)