On Wed, Feb 28, 2018 at 08:02:59PM +0200, cantabile wrote:
> On 27/02/18 22:42, Luis R. Rodriguez wrote:
> > I'd be curious if someone who can trigger the situation can test what
> > happens if you use:
> >
> > diff --git a/drivers/net/wireless/mediatek/mt7601u/mcu.c b/drivers/net/wireless/mediatek/mt7601u/mcu.c
> > index 65a8004418ea..04cbffd225a1 100644
> > --- a/drivers/net/wireless/mediatek/mt7601u/mcu.c
> > +++ b/drivers/net/wireless/mediatek/mt7601u/mcu.c
> > @@ -421,7 +421,7 @@ static int mt7601u_load_firmware(struct mt7601u_dev *dev)
> > MT_USB_DMA_CFG_TX_BULK_EN));
> > if (firmware_running(dev))
> > - return 0;
> > + pr_info("Firmware already loaded but going to reload...");
> > ret = request_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
> > if (ret)
> >
> >
> > Curious, will it really fail?
>
> This change brings no new messages from mt7601u in dmesg (other than this
> pr_info), and the device works fine, as far as I can tell.
OK so we know that the optimization is optional, not a requirement.
That may be worth extending in documentation on the driver.
> > Note that I see mt7601u_stop() just calls mt7601u_mac_stop(). The big cleanup
> > happens via mt7601u_cleanup(), but I see mt7601u_disconnect() calls it.
> >
> > Just curious, does that not get called on shutdown?
> >
> > diff --git a/drivers/net/wireless/mediatek/mt7601u/usb.c b/drivers/net/wireless/mediatek/mt7601u/usb.c
> > index b9e4f6793138..126ef2ba77c2 100644
> > --- a/drivers/net/wireless/mediatek/mt7601u/usb.c
> > +++ b/drivers/net/wireless/mediatek/mt7601u/usb.c
> > @@ -311,6 +311,7 @@ static void mt7601u_disconnect(struct usb_interface *usb_intf)
> > {
> > struct mt7601u_dev *dev = usb_get_intfdata(usb_intf);
> > + pr_info("Calling mt7601u_disconnect()...");
> > ieee80211_unregister_hw(dev->hw);
> > mt7601u_cleanup(dev);
> >
> > If it does, one option is mt7601u_cleanup() can use some love to really shut down
> > the device more... But its not clear to me what else could be done and I'm very
> > inclined to believe its not sensible.
> >
> "Calling mt7601u_disconnect" does not appear in journalctl after a reboot.
Oh, I didn't expect it to come up during startup, I was wondering if it did
trigger while going down on reboot.
Luis
