On Sun, Sep 18, 2016 at 06:52:31PM +0800, Yadi Hu wrote:
> From: "Yadi.hu" <yadi.hu@windriver.com>
> 
> the eg20t driver call request_irq() function before the pch_base_address,
> base address of i2c controller's register, is assigned an effective value.
> 
> there is one possible scenario that an interrupt which isn't inside eg20t
> arrives immediately after request_irq() is executed when i2c controller
> shares an interrupt number with others. since the interrupt handler
> pch_i2c_handler() has already active as shared action, it will be called
> and read its own register to determine if this interrupt is from itself.
> 
> At that moment, since base address of i2c registers is not remapped
> in kernel space yet,so the INT handler will access an illegal address
> and then a error occurs.
> 
> Signed-off-by: Yadi.hu <yadi.hu@windriver.com>

Applied to for-next, thanks!

Please make sure "V3" also appears in the patch subject since patch
management tools pick this up. "-v <nr>" in recent git versions makes
this super easy.