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SubjectRe: [PATCH] ARM: davinci: da8xx_register_spi() should not register SPI board info
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Hi Sekhar,

On Wed, 2012-11-28 at 14:19 +0530, Sekhar Nori wrote:
> Hi Vivien,
>
> On 9/11/2012 5:59 AM, Vivien Didelot wrote:
> > Without this patch, da8xx_register_spi() registers the SPI board info,
> > the SPI controller, and sets its number of chipselect to the size of the
> > static spi_board_info array. This is bad because a SPI board info may
> > declare devices for different SPI buses, and because other code can also
> > call spi_register_board_info() (e.g. a daughter board might provide
> > additional SPI devices).
> >
> > This patch removes the spi_register_board_info() call from
> > da8xx_register_spi(), renames this last one to da8xx_register_spi_bus()
> > to be more explicit, takes the number of chipselect as a function
> > parameter, and updates the impacted board-da8{3,5}0-evm.c, and
> > board-mityomapl138.c files accordingly. It also sets the SPI platform
> > data static, as it doesn't need to be exported.
> >
> > Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
>
> Sorry about the late reply. It seems I missed seeing this completely
> until you reminded Kevin about it.
>
> The patch looks good to me except some minor issues. I made those
> changes myself locally since I am the one guilty of getting back on this
> so late. See below:
>
> > ---
> > arch/arm/mach-davinci/board-da830-evm.c | 9 +++++++--
> > arch/arm/mach-davinci/board-da850-evm.c | 9 +++++++--
> > arch/arm/mach-davinci/board-mityomapl138.c | 9 +++++++--
> > arch/arm/mach-davinci/devices-da8xx.c | 14 +++-----------
> > arch/arm/mach-davinci/include/mach/da8xx.h | 3 +--
> > 5 files changed, 25 insertions(+), 19 deletions(-)
>
> The patch doesn't apply to the latest kernel anymore. I resolved that.
>
> >
> > diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
> > index 11c3db9..adb8d87 100644
> > --- a/arch/arm/mach-davinci/board-da830-evm.c
> > +++ b/arch/arm/mach-davinci/board-da830-evm.c
> > @@ -652,8 +652,13 @@ static __init void da830_evm_init(void)
> > if (ret)
> > pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
> >
> > - ret = da8xx_register_spi(0, da830evm_spi_info,
> > - ARRAY_SIZE(da830evm_spi_info));
> > + ret = spi_register_board_info(da830evm_spi_info,
> > + ARRAY_SIZE(da830evm_spi_info));
> > + if (ret)
> > + pr_warning("da830_evm_init: spi info registration failed: %d\n",
> > + ret);
>
> Checkpatch asks us to use pr_warn() instead. Fixed that. Also, used
> __func__ to print function name. Rob Tivy has patches fixing these all
> through this file.
>
> Thanks,
> Sekhar

Thank you for considering the patch and for the upstream update!

Cheers,
Vivien




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