[patch 3/3] speakup: Simplify spk_ttyio_out error handling.

From: samuel . thibault
Date: Wed Dec 09 2020 - 16:14:13 EST


This avoids most code indentation

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>

Index: linux-5.10/drivers/accessibility/speakup/spk_ttyio.c
===================================================================
--- linux-5.10.orig/drivers/accessibility/speakup/spk_ttyio.c
+++ linux-5.10/drivers/accessibility/speakup/spk_ttyio.c
@@ -225,27 +225,29 @@ void spk_ttyio_unregister_ldisc(void)
static int spk_ttyio_out(struct spk_synth *in_synth, const char ch)
{
struct tty_struct *tty = in_synth->dev;
+ int ret;

- if (in_synth->alive && tty->ops->write) {
- int ret = tty->ops->write(tty, &ch, 1);
+ if (!in_synth->alive || !tty->ops->write)
+ return 0;

- if (ret == 0)
- /* No room */
- return 0;
- if (ret < 0) {
- pr_warn("%s: I/O error, deactivating speakup\n",
- in_synth->long_name);
- /* No synth any more, so nobody will restart TTYs,
- * and we thus need to do it ourselves. Now that there
- * is no synth we can let application flood anyway
- */
- in_synth->alive = 0;
- speakup_start_ttys();
- return 0;
- }
+ ret = tty->ops->write(tty, &ch, 1);
+
+ if (ret == 0)
+ /* No room */
+ return 0;
+
+ if (ret > 0)
+ /* Success */
return 1;
- }

+ pr_warn("%s: I/O error, deactivating speakup\n",
+ in_synth->long_name);
+ /* No synth any more, so nobody will restart TTYs,
+ * and we thus need to do it ourselves. Now that there
+ * is no synth we can let application flood anyway
+ */
+ in_synth->alive = 0;
+ speakup_start_ttys();
return 0;
}