Linux 6.0-rc6

bus: mhi: host: pci_generic: Add a secondary AT port to Telit FN990

Add a secondary AT port using one of OEM reserved channel.

bus: mhi: host: pci_generic: Add a secondary AT port to Telit FN990

Add a secondary AT port using one of OEM reserved channel.

MHI Host

--------

- Print the modem name while probing the MHI host pci-generic driver. This has
  been exposed as a debug information so far but on a low storate embedded
  devices such as OpenWRT based products, this helps in identifying the
  attached modem without enabling the debug logs.

Linux 6.0-rc5

Linux 6.0-rc4

wwan: add NMEA type

Signed-off-by: Daniele Palmas <[email protected]>

A single fix targeting the MHI host stack:

 - Since the commit 1227d2a ("bus: mhi: host: Move IRQ allocation to
   controller registration phase"), the MHI context gets freed during
   mhi_unregister_controller(). But when the MHI IRQs are shared, the IRQ
   handler may get invoked during __free_irq() if CONFIG_DEBUG_SHIRQ is set.
   In that case, there will be a null pointer dereference because of trying to
   use the freed context struct.

   So for fixing the issue, let's check for the existence of the context struct
   at the start of the handler before handling the IRQ.

Linux 6.0-rc3

mhi: fn990: add second at channel and nmea