Re: [PATCH] ARM: shmobile: Fix R-Car Gen2 regulator quirk

[Simon Horman <horms@verge.net.au>]

On Thu, Dec 20, 2018 at 05:01:15AM +0000, DUNG NGUYEN wrote:
> > The quirk code currently detects all compatible I2C chips with a shared IRQ line
> > on all I2C busses, adds them into a list, and registers a bus notifier. For every
> > chip for which the bus notifier triggers, the quirk code performs I2C transfer on
> > that I2C bus for all addresses in the list.
> > The problem is that this may generate transfers to non-existing chips on
> > systems with multiple I2C busses.
> > 
> > This patch adds a check to verify that the I2C bus to which the chip with shared
> > IRQ is attached to matches the I2C bus of the chip which triggered the bus
> > notifier and only starts the I2C transfer if they match.
> > 
> > Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
> > Cc: Geert Uytterhoeven <geert+renesas@glider.be>
> > Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> > Cc: Simon Horman <horms+renesas@verge.net.au>
> > Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> > Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> > Cc: linux-renesas-soc@vger.kernel.org
> > ---
> Hi Mr Marek
> 
> Tested-by: Nguyen Viet Dung <dung.nguyen.aj@renesas.com>
> 
> I have tested this patch on H2 Lager with mainline v4.20-rc4 kernel.
> Confirmed that the problem is improved by this patch.
> 
> Best regards,

Thanks, applied for v4.22.