On Wed, 18 Jul 2018, Srinivas Pandruvada wrote: > On Mehlow Xeon-E workstation, ISH PCI device is enabled but without ISH > firmware. Here the ISH device PCI device id was reused for some non Linux > storage drivers. So this was not done for enabling ISH. But this has a > undesirable side effect for Linux. > > Here the ISH driver will be loaded via PCI enumeration and will try to do > reset sequence. But reset sequence will wait till timeout as there is no > real ISH firmware is present to take action. This delay will add to boot > time of Linux (This platform will still continue to boot after this > timeout). > > To avoid this boot delay we need to prevent loading of ISH drivers on > this platform. So we need to have hack to avoid treating this device as > ISH on this platform. To identify this workstation, we need some runtime > method. Luckily there are special PCI id on this workstation to > distinguish from the client version of this platform. On client version, > the ISH is supported using same PCI device id. So this change look for > the presence of PCI device IDs A309 and A30A and exit. > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> > --- > v2 > Replaced pci_get_device with pci_dev_present to check in a loop as > suggested by Benjamin. Applied, thanks. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
