Re: spin_lock_irq / spin_lock_irqsave ??

[<keshetti85-linux@xxxxxxxxxxx>]

Whereas:

spin_lock_irq() <-- Irqs disabled
spin_lock_irqsave() <-- Irqs disabled, save disabled state.
spin_unlock_irqrestore() <-- Retain state. Irqs still disabled.
spin_unlock_irq() <-- Irqs enabled.

Thanks, its clear now.
So it will be better to use spin_lock_irqsave if you are not sure of the previous 
irq state.

-Mahesh.

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