linux-kernel - Re: [PATCH 24/30] staging: rts5208: deprecate pci_get_bus_and

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Message-ID: <20171122075422.GD26583@kroah.com>
Date:   Wed, 22 Nov 2017 08:54:22 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     linux-pci@...r.kernel.org, timur@...eaurora.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Colin Ian King <colin.king@...onical.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Hannes Reinecke <hare@...e.de>,
        Gaurav Pathak <gauravpathak129@...il.com>,
        "open list:STAGING SUBSYSTEM" <devel@...verdev.osuosl.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 24/30] staging: rts5208: deprecate pci_get_bus_and_slot()

On Wed, Nov 22, 2017 at 12:31:09AM -0500, 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>
> ---
>  drivers/staging/rts5208/rtsx.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/rts5208/rtsx.c b/drivers/staging/rts5208/rtsx.c
> index 89e2cfe..13b14fe 100644
> --- a/drivers/staging/rts5208/rtsx.c
> +++ b/drivers/staging/rts5208/rtsx.c
> @@ -281,7 +281,7 @@ int rtsx_read_pci_cfg_byte(u8 bus, u8 dev, u8 func, u8 offset, u8 *val)
>  	u8 data;
>  	u8 devfn = (dev << 3) | func;
>  
> -	pdev = pci_get_bus_and_slot(bus, devfn);
> +	pdev = pci_get_domain_bus_and_slot(0, bus, devfn);

Ugh, this whole function should go away, but it's good enough for now,
I'll queue it up after -rc1 is out.

thanks,

greg k-h