IRQ4 - Serial Port Interrupt not invoked.
Hi All,
I am in process of writing a serial port driver on x86 on linux. For some reason whenever i send some data to serial port my IRQ4 interrupt handler is not being invoked. 1) I used register_irq(..) , register my interrupt handler , which returns success. 2) On opening /proc/interupt file i see IRQ 4 registered by my driver ,though there is not even a single hit. 3) I have set IER(Interrupt Enable Register) low four bits to 1 to enable all serial port interrupts. Please Suggest Thanks Sanjay |
Please do not double post, its against the rules. This thread being closed as you asked this 4 other times in 4 different forums.
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