On Mon, Mar 02, 2015 at 12:38:35AM +0100, Salah Triki wrote:
> This patch removes unnecessary checks of unit magic, channel magic, board
> magic and board state.
>
> Signed-off-by: Salah Triki <salah.tr...@acm.org>
> ---
> drivers/staging/dgnc/dgnc_sysfs.c | 14 --------------
> 1 file changed, 14 deletions(-)
>
> diff --git a/drivers/staging/dgnc/dgnc_sysfs.c
> b/drivers/staging/dgnc/dgnc_sysfs.c
> index 2fd34ca..f420590 100644
> --- a/drivers/staging/dgnc/dgnc_sysfs.c
> +++ b/drivers/staging/dgnc/dgnc_sysfs.c
> @@ -384,23 +384,9 @@ void dgnc_remove_ports_sysfiles(struct dgnc_board *bd)
>
> static ssize_t dgnc_tty_state_show(struct device *d, struct device_attribute
> *attr, char *buf)
> {
> - struct dgnc_board *bd;
> - struct channel_t *ch;
> struct un_t *un;
>
> - if (!d)
> - return 0;
> un = dev_get_drvdata(d);
> - if (!un || un->magic != DGNC_UNIT_MAGIC)
> - return 0;
> - ch = un->un_ch;
> - if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
> - return 0;
> - bd = ch->ch_bd;
> - if (!bd || bd->magic != DGNC_BOARD_MAGIC)
> - return 0;
> - if (bd->state != BOARD_READY)
> - return 0;
>
> return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" :
> "Closed");
Why do we have this sysfs file at all? It's not useful for anything,
and userspace better not depend on learning if a tty port is "open" or
"closed" :)
Care to just remove it entirely?
thanks,
greg k-h
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