Merge tag 'tty-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the tty and serial driver updates for 5.8-rc1

  Nothing huge at all, just a lot of little serial driver fixes, updates
  for new devices and features, and other small things. Full details are
  in the shortlog.

  All of these have been in linux-next with no issues for a while"

* tag 'tty-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (67 commits)
  tty: serial: qcom_geni_serial: Add 51.2MHz frequency support
  tty: serial: imx: clear Ageing Timer Interrupt in handler
  serial: 8250_fintek: Add F81966 Support
  sc16is7xx: Add flag to activate IrDA mode
  dt-bindings: sc16is7xx: Add flag to activate IrDA mode
  serial: 8250: Support rs485 bus termination GPIO
  serial: 8520_port: Fix function param documentation
  dt-bindings: serial: Add binding for rs485 bus termination GPIO
  vt: keyboard: avoid signed integer overflow in k_ascii
  serial: 8250: Enable 16550A variants by default on non-x86
  tty: hvc_console, fix crashes on parallel open/close
  serial: imx: Initialize lock for non-registered console
  sc16is7xx: Read the LSR register for basic device presence check
  sc16is7xx: Allow sharing the IRQ line
  sc16is7xx: Use threaded IRQ
  sc16is7xx: Always use falling edge IRQ
  tty: n_gsm: Fix bogus i++ in gsm_data_kick
  tty: n_gsm: Remove unnecessary test in gsm_print_packet()
  serial: stm32: add no_console_suspend support
  tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM_SLEEP
  ...

2 files changed, 88 insertions, 71 deletions

diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 15d33fa0c925..568b2171f335 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -127,7 +127,11 @@ static DEFINE_SPINLOCK(func_buf_lock); /* guard 'func_buf'  and friends */
 static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)];	/* keyboard key bitmap */
 static unsigned char shift_down[NR_SHIFT];		/* shift state counters.. */
 static bool dead_key_next;
-static int npadch = -1;					/* -1 or number assembled on pad */
+
+/* Handles a number being assembled on the number pad */
+static bool npadch_active;
+static unsigned int npadch_value;
+
 static unsigned int diacr;
 static char rep;					/* flag telling character repeat */
 
@@ -845,12 +849,12 @@ static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
 		shift_state &= ~(1 << value);
 
 	/* kludge */
-	if (up_flag && shift_state != old_state && npadch != -1) {
+	if (up_flag && shift_state != old_state && npadch_active) {
 		if (kbd->kbdmode == VC_UNICODE)
-			to_utf8(vc, npadch);
+			to_utf8(vc, npadch_value);
 		else
-			put_queue(vc, npadch & 0xff);
-		npadch = -1;
+			put_queue(vc, npadch_value & 0xff);
+		npadch_active = false;
 	}
 }
 
@@ -868,7 +872,7 @@ static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
 
 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
 {
-	int base;
+	unsigned int base;
 
 	if (up_flag)
 		return;
@@ -882,10 +886,12 @@ static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
 		base = 16;
 	}
 
-	if (npadch == -1)
-		npadch = value;
-	else
-		npadch = npadch * base + value;
+	if (!npadch_active) {
+		npadch_value = 0;
+		npadch_active = true;
+	}
+
+	npadch_value = npadch_value * base + value;
 }
 
 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c
index d54a549c5892..31bb3647a99c 100644
--- a/drivers/tty/vt/selection.c
+++ b/drivers/tty/vt/selection.c
@@ -185,47 +185,54 @@ int set_selection_user(const struct tiocl_selection __user *sel,
 	return set_selection_kernel(&v, tty);
 }
 
-static int __set_selection_kernel(struct tiocl_selection *v, struct tty_struct *tty)
+static int vc_selection_store_chars(struct vc_data *vc, bool unicode)
 {
-	struct vc_data *vc = vc_cons[fg_console].d;
-	int new_sel_start, new_sel_end, spc;
 	char *bp, *obp;
-	int i, ps, pe;
-	u32 c;
-	int ret = 0;
-	bool unicode;
-
-	poke_blanked_console();
-
-	v->xs = min_t(u16, v->xs - 1, vc->vc_cols - 1);
-	v->ys = min_t(u16, v->ys - 1, vc->vc_rows - 1);
-	v->xe = min_t(u16, v->xe - 1, vc->vc_cols - 1);
-	v->ye = min_t(u16, v->ye - 1, vc->vc_rows - 1);
-	ps = v->ys * vc->vc_size_row + (v->xs << 1);
-	pe = v->ye * vc->vc_size_row + (v->xe << 1);
+	unsigned int i;
 
-	if (v->sel_mode == TIOCL_SELCLEAR) {
-		/* useful for screendump without selection highlights */
+	/* Allocate a new buffer before freeing the old one ... */
+	/* chars can take up to 4 bytes with unicode */
+	bp = kmalloc_array((vc_sel.end - vc_sel.start) / 2 + 1, unicode ? 4 : 1,
+			   GFP_KERNEL);
+	if (!bp) {
+		printk(KERN_WARNING "selection: kmalloc() failed\n");
 		clear_selection();
-		return 0;
+		return -ENOMEM;
 	}
+	kfree(vc_sel.buffer);
+	vc_sel.buffer = bp;
 
-	if (mouse_reporting() && (v->sel_mode & TIOCL_SELMOUSEREPORT)) {
-		mouse_report(tty, v->sel_mode & TIOCL_SELBUTTONMASK, v->xs,
-			     v->ys);
-		return 0;
+	obp = bp;
+	for (i = vc_sel.start; i <= vc_sel.end; i += 2) {
+		u32 c = sel_pos(i, unicode);
+		if (unicode)
+			bp += store_utf8(c, bp);
+		else
+			*bp++ = c;
+		if (!isspace(c))
+			obp = bp;
+		if (!((i + 2) % vc->vc_size_row)) {
+			/* strip trailing blanks from line and add newline,
+			   unless non-space at end of line. */
+			if (obp != bp) {
+				bp = obp;
+				*bp++ = '\r';
+			}
+			obp = bp;
+		}
 	}
+	vc_sel.buf_len = bp - vc_sel.buffer;
 
-	if (ps > pe)	/* make vc_sel.start <= vc_sel.end */
-		swap(ps, pe);
+	return 0;
+}
 
-	if (vc_sel.cons != vc_cons[fg_console].d) {
-		clear_selection();
-		vc_sel.cons = vc_cons[fg_console].d;
-	}
-	unicode = vt_do_kdgkbmode(fg_console) == K_UNICODE;
+static int vc_do_selection(struct vc_data *vc, unsigned short mode, int ps,
+		int pe)
+{
+	int new_sel_start, new_sel_end, spc;
+	bool unicode = vt_do_kdgkbmode(fg_console) == K_UNICODE;
 
-	switch (v->sel_mode) {
+	switch (mode) {
 	case TIOCL_SELCHAR:	/* character-by-character selection */
 		new_sel_start = ps;
 		new_sel_end = pe;
@@ -303,40 +310,44 @@ static int __set_selection_kernel(struct tiocl_selection *v, struct tty_struct *
 	vc_sel.start = new_sel_start;
 	vc_sel.end = new_sel_end;
 
-	/* Allocate a new buffer before freeing the old one ... */
-	/* chars can take up to 4 bytes with unicode */
-	bp = kmalloc_array((vc_sel.end - vc_sel.start) / 2 + 1, unicode ? 4 : 1,
-			   GFP_KERNEL);
-	if (!bp) {
-		printk(KERN_WARNING "selection: kmalloc() failed\n");
+	return vc_selection_store_chars(vc, unicode);
+}
+
+static int vc_selection(struct vc_data *vc, struct tiocl_selection *v,
+		struct tty_struct *tty)
+{
+	int ps, pe;
+
+	poke_blanked_console();
+
+	if (v->sel_mode == TIOCL_SELCLEAR) {
+		/* useful for screendump without selection highlights */
 		clear_selection();
-		return -ENOMEM;
+		return 0;
 	}
-	kfree(vc_sel.buffer);
-	vc_sel.buffer = bp;
 
-	obp = bp;
-	for (i = vc_sel.start; i <= vc_sel.end; i += 2) {
-		c = sel_pos(i, unicode);
-		if (unicode)
-			bp += store_utf8(c, bp);
-		else
-			*bp++ = c;
-		if (!isspace(c))
-			obp = bp;
-		if (! ((i + 2) % vc->vc_size_row)) {
-			/* strip trailing blanks from line and add newline,
-			   unless non-space at end of line. */
-			if (obp != bp) {
-				bp = obp;
-				*bp++ = '\r';
-			}
-			obp = bp;
-		}
+	v->xs = min_t(u16, v->xs - 1, vc->vc_cols - 1);
+	v->ys = min_t(u16, v->ys - 1, vc->vc_rows - 1);
+	v->xe = min_t(u16, v->xe - 1, vc->vc_cols - 1);
+	v->ye = min_t(u16, v->ye - 1, vc->vc_rows - 1);
+
+	if (mouse_reporting() && (v->sel_mode & TIOCL_SELMOUSEREPORT)) {
+		mouse_report(tty, v->sel_mode & TIOCL_SELBUTTONMASK, v->xs,
+			     v->ys);
+		return 0;
 	}
-	vc_sel.buf_len = bp - vc_sel.buffer;
 
-	return ret;
+	ps = v->ys * vc->vc_size_row + (v->xs << 1);
+	pe = v->ye * vc->vc_size_row + (v->xe << 1);
+	if (ps > pe)	/* make vc_sel.start <= vc_sel.end */
+		swap(ps, pe);
+
+	if (vc_sel.cons != vc) {
+		clear_selection();
+		vc_sel.cons = vc;
+	}
+
+	return vc_do_selection(vc, v->sel_mode, ps, pe);
 }
 
 int set_selection_kernel(struct tiocl_selection *v, struct tty_struct *tty)
@@ -345,7 +356,7 @@ int set_selection_kernel(struct tiocl_selection *v, struct tty_struct *tty)
 
 	mutex_lock(&vc_sel.lock);
 	console_lock();
-	ret = __set_selection_kernel(v, tty);
+	ret = vc_selection(vc_cons[fg_console].d, v, tty);
 	console_unlock();
 	mutex_unlock(&vc_sel.lock);