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@xxxxxxxxxxxxx> > > > > 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@xxxxxxxxxxxxx> > > Applied to for-next, thanks! I meant: applied to for-current!
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