Eugene, That did help. I was using the Interrupt Line D, whereas hardware is generating interrupt on Interrupt Line A. Correcting the IRQ number to the one specified in the arch/platforms file captured the interrupt in the device driver.
Thanks for the help. Have a nice day. Sanjay -----Original Message----- From: Eugene Surovegin [mailto:[EMAIL PROTECTED] Sent: Monday, April 18, 2005 12:14 PM To: Sanjay Bajaj Cc: linuxppc-embedded at ozlabs.org Subject: Re: Unable to capture device interrupts on ppc440gx? On Mon, Apr 18, 2005 at 12:02:52PM -0400, Sanjay Bajaj wrote: > In the device driver open function, I call request_irq() to register > my interrupt handler function to a specified IRQ number. It > succeeds. > But when I enable the interrupt (and we can detect the hardware line > is active) on the hardware, the interrupt handler in NOT invoked. Is > there something I am missing? Any help or pointers are appreciated. Did you configure polarity and triggering settings for this IRQ source? If not, look for example at ebony.c (ppc4xx_uic_ext_irq_cfg) keeping in mind, that Ebony has 440GP CPU. 440GX has 5 additional IRQ lines. -- Eugene
