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n_hdlc: inline n_hdlc_release

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Put the body of n_hdlc_release into the only caller. It can be seen,
that the "if" is superfluous now -- the same happens few lines above in
n_hdlc_tty_close already. So drop it.

Drop also n_hdlc2tty macro as this was the only user.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219084118.26491-12-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2020-02-19 09:41:06 +01:00 committed by Greg Kroah-Hartman
parent 75011682e7
commit 43e784eca8
1 changed files with 10 additions and 25 deletions
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35
drivers/tty/n_hdlc.c
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@ -175,8 +175,6 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *cp,
char *fp, int count); char *fp, int count);
static void n_hdlc_tty_wakeup(struct tty_struct *tty); static void n_hdlc_tty_wakeup(struct tty_struct *tty);
#define n_hdlc2tty(n_hdlc) ((n_hdlc)->tty)
static void flush_rx_queue(struct tty_struct *tty) static void flush_rx_queue(struct tty_struct *tty)
{ {
struct n_hdlc *n_hdlc = tty->disc_data; struct n_hdlc *n_hdlc = tty->disc_data;
@ -220,28 +218,6 @@ static void n_hdlc_free_buf_list(struct n_hdlc_buf_list *list)
} while (buf); } while (buf);
} }
/**
* n_hdlc_release - release an n_hdlc per device line discipline info structure
* @n_hdlc - per device line discipline info structure
*/
static void n_hdlc_release(struct n_hdlc *n_hdlc)
{
struct tty_struct *tty = n_hdlc2tty (n_hdlc);
/* Ensure that the n_hdlcd process is not hanging on select()/poll() */
wake_up_interruptible (&tty->read_wait);
wake_up_interruptible (&tty->write_wait);
if (tty->disc_data == n_hdlc)
tty->disc_data = NULL; /* Break the tty->n_hdlc link */
n_hdlc_free_buf_list(&n_hdlc->rx_free_buf_list);
n_hdlc_free_buf_list(&n_hdlc->tx_free_buf_list);
n_hdlc_free_buf_list(&n_hdlc->rx_buf_list);
n_hdlc_free_buf_list(&n_hdlc->tx_buf_list);
kfree(n_hdlc);
} /* end of n_hdlc_release() */
/** /**
* n_hdlc_tty_close - line discipline close * n_hdlc_tty_close - line discipline close
* @tty - pointer to tty info structure * @tty - pointer to tty info structure
@ -266,7 +242,16 @@ static void n_hdlc_tty_close(struct tty_struct *tty)
tty->disc_data = NULL; tty->disc_data = NULL;
if (tty != n_hdlc->tty) if (tty != n_hdlc->tty)
return; return;
n_hdlc_release (n_hdlc);
/* Ensure that the n_hdlcd process is not hanging on select()/poll() */
wake_up_interruptible(&tty->read_wait);
wake_up_interruptible(&tty->write_wait);
n_hdlc_free_buf_list(&n_hdlc->rx_free_buf_list);
n_hdlc_free_buf_list(&n_hdlc->tx_free_buf_list);
n_hdlc_free_buf_list(&n_hdlc->rx_buf_list);
n_hdlc_free_buf_list(&n_hdlc->tx_buf_list);
kfree(n_hdlc);
} /* end of n_hdlc_tty_close() */ } /* end of n_hdlc_tty_close() */
/** /**