Re: [PATCH] staging: gdm724x: gdm_tty: replaced macro with an inline function

From: Greg KH
Date: Tue Sep 01 2020 - 12:02:44 EST


On Tue, Sep 01, 2020 at 05:44:37PM +0200, Antoni Przybylik wrote:
> This approach is more elegant and prevents some problems related to
> macros such as operator precedence in expanded expression.
>
> Signed-off-by: Antoni Przybylik <antoni.przybylik@xxxxx>
> ---
> drivers/staging/gdm724x/gdm_tty.c | 15 +++++++++------
> 1 file changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c
> index 6e813693a766..e789b7348dee 100644
> --- a/drivers/staging/gdm724x/gdm_tty.c
> +++ b/drivers/staging/gdm724x/gdm_tty.c
> @@ -27,8 +27,6 @@
>
> #define MUX_TX_MAX_SIZE 2048
>
> -#define GDM_TTY_READY(gdm) (gdm && gdm->tty_dev && gdm->port.count)
> -
> static struct tty_driver *gdm_driver[TTY_MAX_COUNT];
> static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
> static DEFINE_MUTEX(gdm_table_lock);
> @@ -36,6 +34,11 @@ static DEFINE_MUTEX(gdm_table_lock);
> static const char *DRIVER_STRING[TTY_MAX_COUNT] = {"GCTATC", "GCTDM"};
> static char *DEVICE_STRING[TTY_MAX_COUNT] = {"GCT-ATC", "GCT-DM"};
>
> +inline int gdm_tty_ready(gdm *gdm)

Why is this a global function?

And really, no need to make it inline, just make it a normal function
and the compiler will inline it if needed.

thanks,

greg k-h