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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2021-01-27 01:21:46 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-27 15:12:04 +0300
commit117422521e6c212d32ed7b5d3561cc1e936f8669 (patch)
treecf005acb78b4942e8b5eff82ecf966abe8f284ae /drivers/accessibility/speakup
parent4f2a81f3a88217e7340b2cab5c0a5ebd0112514c (diff)
downloadlinux-117422521e6c212d32ed7b5d3561cc1e936f8669.tar.xz
speakup: Simplify spk_ttyio_out error handling.
This avoids most code indentation Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Link: https://lore.kernel.org/r/20210126222147.3848175-4-samuel.thibault@ens-lyon.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/accessibility/speakup')
-rw-r--r--drivers/accessibility/speakup/spk_ttyio.c38
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/accessibility/speakup/spk_ttyio.c b/drivers/accessibility/speakup/spk_ttyio.c
index adc1cdbae2be..4dbd24c506d6 100644
--- a/drivers/accessibility/speakup/spk_ttyio.c
+++ b/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)
+ return 0;
- if (in_synth->alive && tty->ops->write) {
- int ret = tty->ops->write(tty, &ch, 1);
-
- 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;
}