linux-kernel - Re: [PATCH v2 03/10] PCI: endpoint: Rename core_init() callback in 'struct pci_epc_event

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Message-ID: <20240403155147.GA85162@thinkpad>
Date: Wed, 3 Apr 2024 21:21:47 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Niklas Cassel <cassel@...nel.org>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Jingoo Han <jingoohan1@...il.com>, linux-pci@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
	mhi@...ts.linux.dev, linux-tegra@...r.kernel.org
Subject: Re: [PATCH v2 03/10] PCI: endpoint: Rename core_init() callback in
 'struct pci_epc_event_ops' to init()

On Wed, Apr 03, 2024 at 07:16:05PM +0530, Manivannan Sadhasivam wrote:
> On Tue, Apr 02, 2024 at 12:52:10PM +0200, Niklas Cassel wrote:
> > On Mon, Apr 01, 2024 at 09:20:29PM +0530, Manivannan Sadhasivam wrote:
> > > core_init() callback is used to notify the EPC initialization event to the
> > > EPF drivers. The 'core' prefix was used indicate that the controller IP
> > > core has completed initialization. But it serves no purpose as the EPF
> > > driver will only care about the EPC initialization as a whole and there is
> > > no real benefit to distinguish the IP core part.
> > > 
> > > So let's rename the core_init() callback in 'struct pci_epc_event_ops' to
> > > just init() to make it more clear.
> > > 
> > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > > ---
> > >  drivers/pci/endpoint/functions/pci-epf-mhi.c  |  4 ++--
> > >  drivers/pci/endpoint/functions/pci-epf-test.c |  4 ++--
> > >  drivers/pci/endpoint/pci-epc-core.c           | 16 ++++++++--------
> > >  include/linux/pci-epf.h                       |  4 ++--
> > >  4 files changed, 14 insertions(+), 14 deletions(-)
> > > 
> > > diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
> > > index 280863c0eeb9..b3c26ffd29a5 100644
> > > --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
> > > +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
> > > @@ -716,7 +716,7 @@ static void pci_epf_mhi_dma_deinit(struct pci_epf_mhi *epf_mhi)
> > >  	epf_mhi->dma_chan_rx = NULL;
> > >  }
> > >  
> > > -static int pci_epf_mhi_core_init(struct pci_epf *epf)
> > > +static int pci_epf_mhi_epc_init(struct pci_epf *epf)
> > >  {
> > >  	struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
> > >  	const struct pci_epf_mhi_ep_info *info = epf_mhi->info;
> > > @@ -897,7 +897,7 @@ static void pci_epf_mhi_unbind(struct pci_epf *epf)
> > >  }
> > >  
> > >  static const struct pci_epc_event_ops pci_epf_mhi_epc_event_ops = {
> > > -	.core_init = pci_epf_mhi_core_init,
> > > +	.init = pci_epf_mhi_epc_init,
> > >  };
> > >  
> > >  static const struct pci_epc_bus_event_ops pci_epf_mhi_bus_event_ops = {
> > > diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
> > > index 973db0b1bde2..abcb6ca61c4e 100644
> > > --- a/drivers/pci/endpoint/functions/pci-epf-test.c
> > > +++ b/drivers/pci/endpoint/functions/pci-epf-test.c
> > > @@ -731,7 +731,7 @@ static int pci_epf_test_set_bar(struct pci_epf *epf)
> > >  	return 0;
> > >  }
> > >  
> > > -static int pci_epf_test_core_init(struct pci_epf *epf)
> > > +static int pci_epf_test_epc_init(struct pci_epf *epf)
> > 
> > On V1 you agreed that it is better to remove 'epc' from the naming.
> > (For both pci-epf-test and pci-epf-mhi).
> > You seem to have forgotten to address this for V2.
> > 
> 
> Oh yeah, sorry about that. I tried to address comments for both series and
> apparently this one got missed.
> 

Ok, now I remember that I kept the prefix intentionally. The module init
functions are already named as pci_epf_{test/mhi}_init(), so cannot use the same
name for the callback also. And using some other name didn't fit, so I kept
'epc' as the prefix since the callback acts on the EPC initialization event
anyway.

- Mani

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