request_irq in I2C driver causes kernel to freeze during probe, but if done later - no problem!
From: Russell King - ARM Linux <hidden>
Date: 2010-03-27 10:11:32
On Sat, Mar 27, 2010 at 08:01:41AM +0100, Ulf Samuelsson wrote:
I assume that, since I request interrupt on falling edge the interrupt will not be activated until the target provides a new falling edge on the interrupt line.
Does your interrupt controller support falling edge IRQs on the I2C controller? Most SoCs provide you with only one fixed triggering method for on-board devices, which is normally only level sensitive.