linux-kernel - Re: [PATCH V4 01/26] alpha/PCI: deprecate pci_get_bus_and

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Date:   Wed, 3 Jan 2018 07:43:51 -0500
From:   Sinan Kaya <okaya@...eaurora.org>
To:     linux-pci@...r.kernel.org, timur@...eaurora.org
Cc:     linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Richard Henderson <rth@...ddle.net>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        "open list:ALPHA PORT" <linux-alpha@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V4 01/26] alpha/PCI: deprecate pci_get_bus_and_slot()

On 12/19/2017 12:37 AM, Sinan Kaya wrote:
> pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
> where a PCI device is present. This restricts the device drivers to be
> reused for other domain numbers.
> 
> Use pci_get_domain_bus_and_slot() with a domain number of 0 where we can't
> extract the domain number. Other places, use the actual domain number from
> the device.
> 
> Signed-off-by: Sinan Kaya <okaya@...eaurora.org>
> ---
>  arch/alpha/kernel/pci.c          | 2 +-
>  arch/alpha/kernel/sys_nautilus.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
> index 87da005..2e86ebb 100644
> --- a/arch/alpha/kernel/pci.c
> +++ b/arch/alpha/kernel/pci.c
> @@ -425,7 +425,7 @@ struct resource * __init
>  		if (bus == 0 && dfn == 0) {
>  			hose = pci_isa_hose;
>  		} else {
> -			dev = pci_get_bus_and_slot(bus, dfn);
> +			dev = pci_get_domain_bus_and_slot(0, bus, dfn);
>  			if (!dev)
>  				return -ENODEV;
>  			hose = dev->sysdata;
> diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
> index 239dc0e..ff4f54b 100644
> --- a/arch/alpha/kernel/sys_nautilus.c
> +++ b/arch/alpha/kernel/sys_nautilus.c
> @@ -237,7 +237,7 @@
>  	bus = hose->bus = bridge->bus;
>  	pcibios_claim_one_bus(bus);
>  
> -	irongate = pci_get_bus_and_slot(0, 0);
> +	irongate = pci_get_domain_bus_and_slot(pci_domain_nr(bus), 0, 0);
>  	bus->self = irongate;
>  	bus->resource[0] = &irongate_io;
>  	bus->resource[1] = &irongate_mem;
> 

Any feedback here? most of the remaining patches have the ACK except these.


-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.