The process of probing the 8250 serial port is as follows:
1. Start detecting IRQs
2. Enable the IER register [At this point, the port is supposed to light
the INTR].
3. Stop detecting IRQs [At this point, the driver detects which IRQ belongs
to that port].
4. Disable IER register.
Since we
On Fri, Dec 9, 2011 at 1:16 PM, Sasha Levin levinsasha...@gmail.com wrote:
The process of probing the 8250 serial port is as follows:
1. Start detecting IRQs
2. Enable the IER register [At this point, the port is supposed to light
the INTR].
3. Stop detecting IRQs [At this point, the driver
* Pekka Enberg penb...@kernel.org wrote:
dev-ier = ioport__read8(data) 0x3f;
+ kvm__irq_line(kvm, dev-irq, dev-ier?1:0);
break;
case UART_LCR:
dev-lcr =
