RE: [PATCH v9 5/8] PCI: imx6: Refine the regulator usage

From: Hongxing Zhu
Date: Thu Jun 09 2022 - 02:19:56 EST


> -----Original Message-----
> From: Bjorn Helgaas <helgaas@xxxxxxxxxx>
> Sent: 2022年6月9日 2:55
> To: Hongxing Zhu <hongxing.zhu@xxxxxxx>
> Cc: l.stach@xxxxxxxxxxxxxx; bhelgaas@xxxxxxxxxx; robh+dt@xxxxxxxxxx;
> broonie@xxxxxxxxxx; lorenzo.pieralisi@xxxxxxx; jingoohan1@xxxxxxxxx;
> festevam@xxxxxxxxx; francesco.dolcini@xxxxxxxxxxx;
> linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; kernel@xxxxxxxxxxxxxx; dl-linux-imx
> <linux-imx@xxxxxxx>
> Subject: Re: [PATCH v9 5/8] PCI: imx6: Refine the regulator usage
>
> On Fri, May 06, 2022 at 09:47:06AM +0800, Richard Zhu wrote:
> > The driver should undo any enables it did itself. The regulator
> > disable shouldn't be basing decisions on regulator_is_enabled().
> >
> > To keep the balance of the regulator usage counter, disable the
> > regulator just behind of imx6_pcie_assert_core_reset() in resume and
> shutdown.
>
> In subject, "Refine" doesn't tell me anything about what's happening here.
Thanks for your comments.
How about the following one?
PCI: imx6: Do regulator disable without the regulator_is_enabled check

Best Regards
Richard Zhu