Messages in this thread | | | Date | Thu, 19 Jan 2012 16:45:58 +0530 | From | Shreshtha Kumar SAHU <> | Subject | Re: [PATCH] amba-pl011: clear previous interrupts before request_irq |
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On Wed, Jan 18, 2012 at 12:41:00 +0100, Alan Cox wrote: > > /* > > + * Clear previous interrupts before installing interrupt handler > > + */ > > + spin_lock_irq(&uap->port.lock); > > + uap->im = 0; > > + writew(uap->im, uap->port.membase + UART011_IMSC); > > + writew(0xffff, uap->port.membase + UART011_ICR); > > + spin_unlock_irq(&uap->port.lock); > > I'm confused why you use spin_lock_irq before you've enabled the IRQ in > the first place but looks fine. > > Alan Yes, spin_lock_irq for the port is not required as request_irq is not yet called for the port.
Thanks and Regards, Shreshtha
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