staging: speakup: spk_serial_out and spk_wait_for_xmitr to take synth arg

These two functions are always called from a context where spk_synth instance
is available. They also use the spk_synth instance but instead of taking it
as an argument, they rely on a global spk_synth instance inside synth.c which
points to the same synth as the one being passed in as argument.

Signed-off-by: Okash Khawaja <okash.khawaja@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/speakup/serialio.c

@@ -143,14 +143,14 @@ void spk_stop_serial_interrupt(void)
 	free_irq(serstate->irq, (void *)synth_readbuf_handler);
 }
 
-int spk_wait_for_xmitr(void)
+int spk_wait_for_xmitr(struct spk_synth *in_synth)
 {
 	int tmout = SPK_XMITR_TIMEOUT;
 
-	if ((synth->alive) && (timeouts >= NUM_DISABLE_TIMEOUTS)) {
+	if ((in_synth->alive) && (timeouts >= NUM_DISABLE_TIMEOUTS)) {
 		pr_warn("%s: too many timeouts, deactivating speakup\n",
-			synth->long_name);
-		synth->alive = 0;
+			in_synth->long_name);
+		in_synth->alive = 0;
 		/* 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
@@ -161,7 +161,7 @@ int spk_wait_for_xmitr(void)
 	}
 	while (spk_serial_tx_busy()) {
 		if (--tmout == 0) {
-			pr_warn("%s: timed out (tx busy)\n", synth->long_name);
+			pr_warn("%s: timed out (tx busy)\n", in_synth->long_name);
 			timeouts++;
 			return 0;
 		}
@@ -206,9 +206,9 @@ unsigned char spk_serial_in_nowait(void)
 }
 EXPORT_SYMBOL_GPL(spk_serial_in_nowait);
 
-int spk_serial_out(const char ch)
+int spk_serial_out(struct spk_synth *in_synth, const char ch)
 {
-	if (synth->alive && spk_wait_for_xmitr()) {
+	if (in_synth->alive && spk_wait_for_xmitr(in_synth)) {
 		outb_p(ch, speakup_info.port_tts);
 		return 1;
 	}

drivers/staging/speakup/speakup_apollo.c

@@ -169,7 +169,7 @@ static void do_catch_up(struct spk_synth *synth)
 		set_current_state(TASK_INTERRUPTIBLE);
 		full_time_val = full_time->u.n.value;
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
-		if (!spk_serial_out(ch)) {
+		if (!spk_serial_out(synth, ch)) {
 			outb(UART_MCR_DTR, speakup_info.port_tts + UART_MCR);
 			outb(UART_MCR_DTR | UART_MCR_RTS,
 					speakup_info.port_tts + UART_MCR);
@@ -182,7 +182,7 @@ static void do_catch_up(struct spk_synth *synth)
 			full_time_val = full_time->u.n.value;
 			delay_time_val = delay_time->u.n.value;
 			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
-			if (spk_serial_out(synth->procspeech))
+			if (spk_serial_out(synth, synth->procspeech))
 				schedule_timeout(msecs_to_jiffies
 						 (delay_time_val));
 			else
@@ -195,7 +195,7 @@ static void do_catch_up(struct spk_synth *synth)
 		synth_buffer_getc();
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 	}
-	spk_serial_out(PROCSPEECH);
+	spk_serial_out(synth, PROCSPEECH);
 }
 
 module_param_named(ser, synth_apollo.ser, int, 0444);

drivers/staging/speakup/speakup_audptr.c

@@ -135,7 +135,7 @@ static void synth_flush(struct spk_synth *synth)
 		udelay(1);
 	}
 	outb(SYNTH_CLEAR, speakup_info.port_tts);
-	spk_serial_out(PROCSPEECH);
+	spk_serial_out(synth, PROCSPEECH);
 }
 
 static void synth_version(struct spk_synth *synth)

drivers/staging/speakup/speakup_decext.c

@@ -186,7 +186,7 @@ static void do_catch_up(struct spk_synth *synth)
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 		if (ch == '\n')
 			ch = 0x0D;
-		if (synth_full() || !spk_serial_out(ch)) {
+		if (synth_full() || !spk_serial_out(synth, ch)) {
 			schedule_timeout(msecs_to_jiffies(delay_time_val));
 			continue;
 		}
@@ -200,10 +200,10 @@ static void do_catch_up(struct spk_synth *synth)
 			in_escape = 0;
 		else if (ch <= SPACE) {
 			if (!in_escape && strchr(",.!?;:", last))
-				spk_serial_out(PROCSPEECH);
+				spk_serial_out(synth, PROCSPEECH);
 			if (time_after_eq(jiffies, jiff_max)) {
 				if (!in_escape)
-					spk_serial_out(PROCSPEECH);
+					spk_serial_out(synth, PROCSPEECH);
 				spin_lock_irqsave(&speakup_info.spinlock,
 							flags);
 				jiffy_delta_val = jiffy_delta->u.n.value;
@@ -218,7 +218,7 @@ static void do_catch_up(struct spk_synth *synth)
 		last = ch;
 	}
 	if (!in_escape)
-		spk_serial_out(PROCSPEECH);
+		spk_serial_out(synth, PROCSPEECH);
 }
 
 static void synth_flush(struct spk_synth *synth)

drivers/staging/speakup/speakup_dectlk.c

@@ -251,7 +251,7 @@ static void do_catch_up(struct spk_synth *synth)
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 		if (ch == '\n')
 			ch = 0x0D;
-		if (synth_full_val || !spk_serial_out(ch)) {
+		if (synth_full_val || !spk_serial_out(synth, ch)) {
 			schedule_timeout(msecs_to_jiffies(delay_time_val));
 			continue;
 		}
@@ -265,10 +265,10 @@ static void do_catch_up(struct spk_synth *synth)
 			in_escape = 0;
 		else if (ch <= SPACE) {
 			if (!in_escape && strchr(",.!?;:", last))
-				spk_serial_out(PROCSPEECH);
+				spk_serial_out(synth, PROCSPEECH);
 			if (time_after_eq(jiffies, jiff_max)) {
 				if (!in_escape)
-					spk_serial_out(PROCSPEECH);
+					spk_serial_out(synth, PROCSPEECH);
 				spin_lock_irqsave(&speakup_info.spinlock,
 						flags);
 				jiffy_delta_val = jiffy_delta->u.n.value;
@@ -283,17 +283,17 @@ static void do_catch_up(struct spk_synth *synth)
 		last = ch;
 	}
 	if (!in_escape)
-		spk_serial_out(PROCSPEECH);
+		spk_serial_out(synth, PROCSPEECH);
 }
 
 static void synth_flush(struct spk_synth *synth)
 {
 	if (in_escape)
 		/* if in command output ']' so we don't get an error */
-		spk_serial_out(']');
+		spk_serial_out(synth, ']');
 	in_escape = 0;
 	is_flushing = 1;
-	spk_serial_out(SYNTH_CLEAR);
+	spk_serial_out(synth, SYNTH_CLEAR);
 }
 
 module_param_named(ser, synth_dectlk.ser, int, 0444);

drivers/staging/speakup/spk_priv.h

@@ -42,10 +42,10 @@
 
 const struct old_serial_port *spk_serial_init(int index);
 void spk_stop_serial_interrupt(void);
-int spk_wait_for_xmitr(void);
+int spk_wait_for_xmitr(struct spk_synth *in_synth);
 unsigned char spk_serial_in(void);
 unsigned char spk_serial_in_nowait(void);
-int spk_serial_out(const char ch);
+int spk_serial_out(struct spk_synth *in_synth, const char ch);
 void spk_serial_release(void);
 
 void synth_buffer_skip_nonlatin1(void);

drivers/staging/speakup/synth.c

@@ -120,7 +120,7 @@ void spk_do_catch_up(struct spk_synth *synth)
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 		if (ch == '\n')
 			ch = synth->procspeech;
-		if (!spk_serial_out(ch)) {
+		if (!spk_serial_out(synth, ch)) {
 			schedule_timeout(msecs_to_jiffies(full_time_val));
 			continue;
 		}
@@ -130,7 +130,7 @@ void spk_do_catch_up(struct spk_synth *synth)
 			delay_time_val = delay_time->u.n.value;
 			full_time_val = full_time->u.n.value;
 			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
-			if (spk_serial_out(synth->procspeech))
+			if (spk_serial_out(synth, synth->procspeech))
 				schedule_timeout(
 					msecs_to_jiffies(delay_time_val));
 			else
@@ -143,7 +143,7 @@ void spk_do_catch_up(struct spk_synth *synth)
 		synth_buffer_getc();
 		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 	}
-	spk_serial_out(synth->procspeech);
+	spk_serial_out(synth, synth->procspeech);
 }
 EXPORT_SYMBOL_GPL(spk_do_catch_up);
 
@@ -154,7 +154,7 @@ const char *spk_synth_immediate(struct spk_synth *synth, const char *buff)
 	while ((ch = *buff)) {
 		if (ch == '\n')
 			ch = synth->procspeech;
-		if (spk_wait_for_xmitr())
+		if (spk_wait_for_xmitr(synth))
 			outb(ch, speakup_info.port_tts);
 		else
 			return buff;
@@ -166,7 +166,7 @@ EXPORT_SYMBOL_GPL(spk_synth_immediate);
 
 void spk_synth_flush(struct spk_synth *synth)
 {
-	spk_serial_out(synth->clear);
+	spk_serial_out(synth, synth->clear);
 }
 EXPORT_SYMBOL_GPL(spk_synth_flush);
 
@@ -181,7 +181,7 @@ int spk_synth_is_alive_restart(struct spk_synth *synth)
 {
 	if (synth->alive)
 		return 1;
-	if (spk_wait_for_xmitr() > 0) {
+	if (spk_wait_for_xmitr(synth) > 0) {
 		/* restart */
 		synth->alive = 1;
 		synth_printf("%s", synth->init);