netdev - Re: [PATCH v1 2/2] qlcninc: use generic power management

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Message-ID: <20200702093645.13e0018a@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Thu, 2 Jul 2020 09:36:45 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Vaibhav Gupta <vaibhavgupta40@...il.com>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, bjorn@...gaas.com,
        Vaibhav Gupta <vaibhav.varodek@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Manish Chopra <manishc@...vell.com>,
        Rahul Verma <rahulv@...vell.com>, GR-Linux-NIC-Dev@...vell.com,
        Shahed Shaikh <shshaikh@...vell.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        skhan@...uxfoundation.org
Subject: Re: [PATCH v1 2/2] qlcninc: use generic power management

On Thu,  2 Jul 2020 12:06:32 +0530 Vaibhav Gupta wrote:
> With legacy PM, drivers themselves were responsible for managing the
> device's power states and takes care of register states. And they use PCI
> helper functions to do it.
> 
> After upgrading to the generic structure, PCI core will take care of
> required tasks and drivers should do only device-specific operations.
> 
> .suspend() calls __qlcnic_shutdown, which then calls qlcnic_82xx_shutdown;
> .resume()  calls __qlcnic_resume,   which then calls qlcnic_82xx_resume;
> 
> Both ...82xx..() are define in
> drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c and are used only in
> drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c.
> 
> Hence upgrade them and remove PCI function calls, like pci_save_state() and
> pci_enable_wake(), inside them
> 
> Compile-tested only.
> 
> Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c: In function ‘qlcnic_82xx_shutdown’:
drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c:1652:6: warning: unused variable ‘retval’ [-Wunused-variable]
 1652 |  int retval;
      |      ^~~~~~