Hi Stefan, thanks for the review! On Sat, 2020-05-02 at 11:05 +0200, Stefan Wahren wrote: > > + /* Make sure we don't trigger a firmware load unnecesarely * > s/unnecesarely/unnecessarily/ Noted > > + pci_read_config_dword(pdev, VL805_PCI_CONFIG_VERSION_OFFSET, &version); > pci_read_config_dword() can fail, we might want to store the return value? I planned on doing that, but realised that the vast majority of pci_read_config_*() users pass on checking for errors. Bjorn, any rule of thumb on when to check for errors here? > > + if (version) > > + goto exit; > > + > > + dev_addr = pdev->bus->number << 20 | PCI_SLOT(pdev->devfn) << 15 | > > + PCI_FUNC(pdev->devfn) << 12; > > + > > + ret = rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_XHCI_RESET, > > + &dev_addr, sizeof(dev_addr)); > > + /* Wait for vl805 to startup */ > > + udelay(200); > > I know, it makes it harder to read but do we really want to wait > unnecessarily if rpi_firmware_property failed? Yes, I figured that it wouldn't hurt much at that faulty state, and you'll be waiting some extra 5s further down the line in quirk_usb_handoff_xhci(). But if you feel it's more correct I'll be happy to change it. > Btw i assume we are in non-atomic context, so maybe it's worth to use > usleep_range() here? Of course, I'll fix that. Regards, Nicolas
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