On Fri, Oct 14, 2016 at 07:22:57PM +0200, Fernando Apesteguia wrote:
> The patch replaces the macro with a function (dgnc_get_board) and
> substitutes the macro statement with a call to that function and a
> comparison on the returned value.
>
> This removes a checkpatch warning.
>
> Signed-off-by: Fernando Apesteguia <fernando.apesteg...@gmail.com>
> ---
> drivers/staging/dgnc/dgnc_sysfs.c | 74
> +++++++++++++++++++++++++++------------
> 1 file changed, 51 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/staging/dgnc/dgnc_sysfs.c
> b/drivers/staging/dgnc/dgnc_sysfs.c
> index 290bf6e..3ea23a9 100644
> --- a/drivers/staging/dgnc/dgnc_sysfs.c
> +++ b/drivers/staging/dgnc/dgnc_sysfs.c
> @@ -90,17 +90,21 @@ void dgnc_remove_driver_sysfiles(struct pci_driver
> *dgnc_driver)
> driver_remove_file(driverfs, &driver_attr_pollrate);
> }
>
> -#define DGNC_VERIFY_BOARD(p, bd) \
> - do { \
> - if (!p) \
> - return 0; \
> - \
> - bd = dev_get_drvdata(p); \
> - if (!bd || bd->magic != DGNC_BOARD_MAGIC) \
> - return 0; \
> - if (bd->state != BOARD_READY) \
> - return 0; \
> - } while (0)
> +static struct dgnc_board *dgnc_get_board(struct device *p)
> +{
> + struct dgnc_board *bd;
> +
> + if (!p)
> + return NULL;
> +
> + bd = dev_get_drvdata(p);
> + if (!bd || bd->magic != DGNC_BOARD_MAGIC)
> + return NULL;
> + if (bd->state != BOARD_READY)
> + return NULL;
> +
> + return bd;
> +}
No, this macro should be removed entirely as what it does is pointless
in some parts, wrong in others, and not needed at all in the rest :(
I've asked others to fix this up properly in the past, but it doesn't
seem like anyone wants to do the work...
I don't want to take this patch as it will hide the real issues here.
thanks,
greg k-h
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