staging: speakup: add spaces around arithmetic operators

Add space around arithmetic operators ('+', '-' and '*') to conform to
Linux kernel coding style. Problem found using checkpatch.
Signed-off-by: Santha Meena Ramamoorthy <santhameena13@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/speakup/speakup_dtlk.c

@@ -287,7 +287,7 @@ static struct synth_settings *synth_interrogate(struct spk_synth *synth)
 	}
 	t = buf;
 	/* serial number is little endian */
-	status.serial_number = t[0] + t[1]*256;
+	status.serial_number = t[0] + t[1] * 256;
 	t += 2;
 	for (i = 0; *t != '\r'; t++) {
 		status.rom_version[i] = *t;
@@ -326,13 +326,13 @@ static int synth_probe(struct spk_synth *synth)
 				speakup_info.port_tts);
 		if ((port_forced & 0xf) != 0xf)
 			pr_info("warning: port base should probably end with f\n");
-		if (synth_request_region(speakup_info.port_tts-1,
+		if (synth_request_region(speakup_info.port_tts - 1,
 					SYNTH_IO_EXTENT)) {
 			pr_warn("sorry, port already reserved\n");
 			return -EBUSY;
 		}
-		port_val = inw(speakup_info.port_tts-1);
-		synth_lpc = speakup_info.port_tts-1;
+		port_val = inw(speakup_info.port_tts - 1);
+		synth_lpc = speakup_info.port_tts - 1;
 	} else {
 		for (i = 0; synth_portlist[i]; i++) {
 			if (synth_request_region(synth_portlist[i],
@@ -341,7 +341,7 @@ static int synth_probe(struct spk_synth *synth)
 			port_val = inw(synth_portlist[i]) & 0xfbff;
 			if (port_val == 0x107f) {
 				synth_lpc = synth_portlist[i];
-				speakup_info.port_tts = synth_lpc+1;
+				speakup_info.port_tts = synth_lpc + 1;
 				break;
 			}
 			synth_release_region(synth_portlist[i],
@@ -359,7 +359,7 @@ static int synth_probe(struct spk_synth *synth)
 		cpu_relax(); /* wait until it's ready */
 	sp = synth_interrogate(synth);
 	pr_info("%s: %03x-%03x, ROM ver %s, s/n %u, driver: %s\n",
-		synth->long_name, synth_lpc, synth_lpc+SYNTH_IO_EXTENT - 1,
+		synth->long_name, synth_lpc, synth_lpc + SYNTH_IO_EXTENT - 1,
 		sp->rom_version, sp->serial_number, synth->version);
 	synth->alive = 1;
 	return 0;
@@ -369,7 +369,8 @@ static void dtlk_release(void)
 {
 	spk_stop_serial_interrupt();
 	if (speakup_info.port_tts)
-		synth_release_region(speakup_info.port_tts-1, SYNTH_IO_EXTENT);
+		synth_release_region(speakup_info.port_tts - 1,
+				     SYNTH_IO_EXTENT);
 	speakup_info.port_tts = 0;
 }