Re: [PATCH] i2c-eg20t: fix race between i2c init and interrupt enable

[Wolfram Sang <wsa@the-dreams.de>]

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On Wed, Sep 21, 2016 at 06:16:09PM +0200, Wolfram Sang wrote:
> 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!

I meant: applied to for-current!


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