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Message-ID: <20200804160637.x3iycau5izywbgzl@function>
Date: Tue, 4 Aug 2020 18:06:37 +0200
From: Samuel Thibault <samuel.thibault@...-lyon.org>
To: gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org, speakup@...ux-speakup.org
Subject: [PATCHv2 1/2] speakup: Fix wait_for_xmitr for ttyio case
This was missed while introducing the tty-based serial access.
The only remaining use of wait_for_xmitr with tty-based access is in
spk_synth_is_alive_restart to check whether the synth can be restarted.
With tty-based this is up to the tty layer to cope with the buffering
etc. so we can just say yes.
Signed-off-by: Samuel Thibault <samuel.thibault@...-lyon.org>
Index: linux-2.6/drivers/accessibility/speakup/serialio.c
===================================================================
--- linux-2.6.orig/drivers/accessibility/speakup/serialio.c
+++ linux-2.6/drivers/accessibility/speakup/serialio.c
@@ -32,6 +32,7 @@ static void spk_serial_tiocmset(unsigned
static unsigned char spk_serial_in(void);
static unsigned char spk_serial_in_nowait(void);
static void spk_serial_flush_buffer(void);
+static int spk_serial_wait_for_xmitr(struct spk_synth *in_synth);
struct spk_io_ops spk_serial_io_ops = {
.synth_out = spk_serial_out,
@@ -40,6 +41,7 @@ struct spk_io_ops spk_serial_io_ops = {
.synth_in = spk_serial_in,
.synth_in_nowait = spk_serial_in_nowait,
.flush_buffer = spk_serial_flush_buffer,
+ .wait_for_xmitr = spk_serial_wait_for_xmitr,
};
EXPORT_SYMBOL_GPL(spk_serial_io_ops);
@@ -211,7 +213,7 @@ void spk_stop_serial_interrupt(void)
}
EXPORT_SYMBOL_GPL(spk_stop_serial_interrupt);
-int spk_wait_for_xmitr(struct spk_synth *in_synth)
+static int spk_serial_wait_for_xmitr(struct spk_synth *in_synth)
{
int tmout = SPK_XMITR_TIMEOUT;
@@ -280,7 +282,7 @@ static void spk_serial_flush_buffer(void
static int spk_serial_out(struct spk_synth *in_synth, const char ch)
{
- if (in_synth->alive && spk_wait_for_xmitr(in_synth)) {
+ if (in_synth->alive && spk_serial_wait_for_xmitr(in_synth)) {
outb_p(ch, speakup_info.port_tts);
return 1;
}
@@ -295,7 +297,7 @@ const char *spk_serial_synth_immediate(s
while ((ch = *buff)) {
if (ch == '\n')
ch = synth->procspeech;
- if (spk_wait_for_xmitr(synth))
+ if (spk_serial_wait_for_xmitr(synth))
outb(ch, speakup_info.port_tts);
else
return buff;
Index: linux-2.6/drivers/accessibility/speakup/spk_priv.h
===================================================================
--- linux-2.6.orig/drivers/accessibility/speakup/spk_priv.h
+++ linux-2.6/drivers/accessibility/speakup/spk_priv.h
@@ -34,7 +34,6 @@
const struct old_serial_port *spk_serial_init(int index);
void spk_stop_serial_interrupt(void);
-int spk_wait_for_xmitr(struct spk_synth *in_synth);
void spk_serial_release(void);
void spk_ttyio_release(void);
void spk_ttyio_register_ldisc(void);
Index: linux-2.6/drivers/accessibility/speakup/spk_ttyio.c
===================================================================
--- linux-2.6.orig/drivers/accessibility/speakup/spk_ttyio.c
+++ linux-2.6/drivers/accessibility/speakup/spk_ttyio.c
@@ -116,6 +116,7 @@ static void spk_ttyio_tiocmset(unsigned
static unsigned char spk_ttyio_in(void);
static unsigned char spk_ttyio_in_nowait(void);
static void spk_ttyio_flush_buffer(void);
+static int spk_ttyio_wait_for_xmitr(struct spk_synth *in_synth);
struct spk_io_ops spk_ttyio_ops = {
.synth_out = spk_ttyio_out,
@@ -125,6 +126,7 @@ struct spk_io_ops spk_ttyio_ops = {
.synth_in = spk_ttyio_in,
.synth_in_nowait = spk_ttyio_in_nowait,
.flush_buffer = spk_ttyio_flush_buffer,
+ .wait_for_xmitr = spk_ttyio_wait_for_xmitr,
};
EXPORT_SYMBOL_GPL(spk_ttyio_ops);
@@ -286,6 +288,11 @@ static void spk_ttyio_tiocmset(unsigned
mutex_unlock(&speakup_tty_mutex);
}
+static int spk_ttyio_wait_for_xmitr(struct spk_synth *in_synth)
+{
+ return 1;
+}
+
static unsigned char ttyio_in(int timeout)
{
struct spk_ldisc_data *ldisc_data = speakup_tty->disc_data;
Index: linux-2.6/drivers/accessibility/speakup/spk_types.h
===================================================================
--- linux-2.6.orig/drivers/accessibility/speakup/spk_types.h
+++ linux-2.6/drivers/accessibility/speakup/spk_types.h
@@ -158,6 +158,7 @@ struct spk_io_ops {
unsigned char (*synth_in)(void);
unsigned char (*synth_in_nowait)(void);
void (*flush_buffer)(void);
+ int (*wait_for_xmitr)(struct spk_synth *synth);
};
struct spk_synth {
Index: linux-2.6/drivers/accessibility/speakup/synth.c
===================================================================
--- linux-2.6.orig/drivers/accessibility/speakup/synth.c
+++ linux-2.6/drivers/accessibility/speakup/synth.c
@@ -159,7 +159,7 @@ int spk_synth_is_alive_restart(struct sp
{
if (synth->alive)
return 1;
- if (spk_wait_for_xmitr(synth) > 0) {
+ if (synth->io_ops->wait_for_xmitr(synth) > 0) {
/* restart */
synth->alive = 1;
synth_printf("%s", synth->init);
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