Re: [PATCH v4] PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t.

[Krzysztof Wilczyński]

Hello,

> The access to the PCI config space via pci_ops::read and pci_ops::write
> is a low-level hardware access. The functions can be accessed with
> disabled interrupts even on PREEMPT_RT. The pci_lock has been made a
> raw_spinlock_t for this purpose. A spinlock_t becomes a sleeping lock on
> PREEMPT_RT can not be acquired with disabled interrupts.
> The vmd_dev::cfg_lock is accessed in the same context as the pci_lock.
> 
> Make vmd_dev::cfg_lock a raw_spinlock_t.

Applied to controller/vmd, thank you!

	Krzysztof