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SubjectRe: [PATCH v2] Staging: greybus: Cleanup in greybus driver
On Tue, Apr 16, 2019 at 05:13:18PM -0500, Madhumitha Prabakaran wrote:
> Fix a blank line after structure declarations. Also, convert
> macros into inline functions in order to maintain Linux kernel
> coding style based on which the inline function is
> preferable over the macro.
>
> Blank line fixes are suggested by checkpatch.pl
>
> Signed-off-by: Madhumitha Prabakaran <madhumithabiw@gmail.com>
>
> Changes in v2:
> - To maintain consistency in driver greybus, all the instances of macro
> with container_of are fixed in a single patch.
> ---
> drivers/staging/greybus/bundle.h | 6 +++++-
> drivers/staging/greybus/control.h | 6 +++++-
> drivers/staging/greybus/gbphy.h | 12 ++++++++++--
> drivers/staging/greybus/greybus.h | 6 +++++-
> drivers/staging/greybus/hd.h | 6 +++++-
> drivers/staging/greybus/interface.h | 6 +++++-
> drivers/staging/greybus/module.h | 6 +++++-
> drivers/staging/greybus/svc.h | 6 +++++-
> 8 files changed, 45 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/staging/greybus/bundle.h b/drivers/staging/greybus/bundle.h
> index 8734d2055657..84956eedb1c4 100644
> --- a/drivers/staging/greybus/bundle.h
> +++ b/drivers/staging/greybus/bundle.h
> @@ -31,7 +31,11 @@ struct gb_bundle {
>
> struct list_head links; /* interface->bundles */
> };
> -#define to_gb_bundle(d) container_of(d, struct gb_bundle, dev)
> +
> +static inline struct gb_bundle *to_gb_bundle(struct device *d)
> +{
> + return container_of(d, struct gb_bundle, dev);
> +}

Why are we changing this to an inline function? The #define is fine,
and how we "normally" do this type of container_of conversion.

I understand the objection of the "no blank line", but this was the
"original" style that we used to create these #defines from the very
beginning of the driver model work a decade ago. Changing that
muscle-memory is going to be hard for some of us. Look at
drivers/base/base.h for other examples of this.

thanks,

greg k-h

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