linux-kernel - Re: [PATCH v3 0/4] Simplify PCIe hotplug indicator control

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Message-ID: <20190827223254.GC9987@google.com>
Date:   Tue, 27 Aug 2019 17:32:54 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Lukas Wunner <lukas@...ner.de>,
        sathyanarayanan kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/4] Simplify PCIe hotplug indicator control

On Tue, Aug 20, 2019 at 03:16:43PM +0300, Denis Efremov wrote:
> On 8/19/19 7:06 PM, Denis Efremov wrote:
> > PCIe defines two optional hotplug indicators: a Power indicator and an
> > Attention indicator. Both are controlled by the same register, and each
> > can be on, off or blinking. The current interfaces
> > (pciehp_green_led_{on,off,blink}() and pciehp_set_attention_status()) are
> > non-uniform and require two register writes in many cases where we could
> > do one.
> > 
> > This patchset introduces the new function pciehp_set_indicators(). It
> > allows one to set two indicators with a single register write. All
> > calls to previous interfaces (pciehp_green_led_* and
> > pciehp_set_attention_status()) are replaced with a new one. Thus,
> > the amount of duplicated code for setting indicators is reduced.
> > 
> > Changes in v3:
> >   - Changed pciehp_set_indicators() to work with existing
> >     PCI_EXP_SLTCTL_* macros
> >   - Reworked the inputs validation in pciehp_set_indicators()
> >   - Removed pciehp_set_attention_status() and pciehp_green_led_*()
> >     completely
> > 
> > Denis Efremov (4):
> >   PCI: pciehp: Add pciehp_set_indicators() to jointly set LED indicators
> >   PCI: pciehp: Switch LED indicators with a single write
> >   PCI: pciehp: Remove pciehp_set_attention_status()
> >   PCI: pciehp: Remove pciehp_green_led_{on,off,blink}()
> 
> Lukas, Sathyanarayanan, sorry that I've dropped most of yours "Reviewed-by".
> The changes in the last 2 patches were significant.

Anybody want to review these?