Re: [PATCH] scsi: aacraid: Add a small delay after IOP reset

["Guilherme G. Piccoli" <gpiccoli@xxxxxxxxxxxxxxxxxx>]

On 09/19/2017 12:37 PM, Christoph Hellwig wrote:
> On Tue, Sep 19, 2017 at 12:11:55PM -0300, Guilherme G. Piccoli wrote:
>>  	src_writel(dev, MUnit.IDR, IOP_SRC_RESET_MASK);
>> +
>> +	msleep(5000);
> 
> src_writel is a writel, and thus a posted MMIO write.  You'll need
> to have to a read first to make it a reliable timing base.
> 

Just for my full understanding - you're saying a readl BEFORE
src_writel() or AFTER src_writel() ?

I could add a read to some dummy register, but notice it was a sequence
of readl's on aac_is_ctrl_up_and_running() that caused the failure of
reset...

Thanks