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Message-Id: <20200831153039.1024302-4-sashal@kernel.org>
Date: Mon, 31 Aug 2020 11:30:20 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Samuel Thibault <samuel.thibault@...-lyon.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Sasha Levin <sashal@...nel.org>, devel@...verdev.osuosl.org
Subject: [PATCH AUTOSEL 5.4 04/23] speakup: Fix wait_for_xmitr for ttyio case
From: Samuel Thibault <samuel.thibault@...-lyon.org>
[ Upstream commit 2b86d9b8ec6efb86fc5ea44f2d49b1df17f699a1 ]
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>
Link: https://lore.kernel.org/r/20200804160637.x3iycau5izywbgzl@function
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/staging/speakup/serialio.c | 8 +++++---
drivers/staging/speakup/spk_priv.h | 1 -
drivers/staging/speakup/spk_ttyio.c | 7 +++++++
drivers/staging/speakup/spk_types.h | 1 +
drivers/staging/speakup/synth.c | 2 +-
5 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/speakup/serialio.c b/drivers/staging/speakup/serialio.c
index 177a2988641c1..403b01d66367e 100644
--- a/drivers/staging/speakup/serialio.c
+++ b/drivers/staging/speakup/serialio.c
@@ -32,6 +32,7 @@ static void spk_serial_tiocmset(unsigned int set, unsigned int clear);
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(struct spk_synth *synth,
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;
diff --git a/drivers/staging/speakup/spk_priv.h b/drivers/staging/speakup/spk_priv.h
index ac6a74883af47..e9e3460634da2 100644
--- a/drivers/staging/speakup/spk_priv.h
+++ b/drivers/staging/speakup/spk_priv.h
@@ -36,7 +36,6 @@
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);
diff --git a/drivers/staging/speakup/spk_ttyio.c b/drivers/staging/speakup/spk_ttyio.c
index 5a9eff08cb960..b79361b6dc3a6 100644
--- a/drivers/staging/speakup/spk_ttyio.c
+++ b/drivers/staging/speakup/spk_ttyio.c
@@ -116,6 +116,7 @@ static void spk_ttyio_tiocmset(unsigned int set, unsigned int clear);
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 int set, unsigned int clear)
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;
diff --git a/drivers/staging/speakup/spk_types.h b/drivers/staging/speakup/spk_types.h
index a2fc72c298944..f2d3bd72c2c19 100644
--- a/drivers/staging/speakup/spk_types.h
+++ b/drivers/staging/speakup/spk_types.h
@@ -157,6 +157,7 @@ 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 {
diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c
index 3568bfb89912c..ac47dbac72075 100644
--- a/drivers/staging/speakup/synth.c
+++ b/drivers/staging/speakup/synth.c
@@ -159,7 +159,7 @@ int spk_synth_is_alive_restart(struct spk_synth *synth)
{
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);
--
2.25.1
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