update kernel to 5.10.198

hc

2024-01-03 2f7c68cb55ecb7331f2381deb497c27155f32faf

 kernel/drivers/tty/serial/8250/8250_core.c
..
..
@@ -14,6 +14,7 @@
14
14
  *	      serial8250_register_8250_port() ports
15
15
  */
16
16
 
17
+#include <linux/acpi.h>
17
18
 #include <linux/module.h>
18
19
 #include <linux/moduleparam.h>
19
20
 #include <linux/ioport.h>
..
..
@@ -22,6 +23,7 @@
22
23
 #include <linux/sysrq.h>
23
24
 #include <linux/delay.h>
24
25
 #include <linux/platform_device.h>
26
+#include <linux/pm_runtime.h>
25
27
 #include <linux/tty.h>
26
28
 #include <linux/ratelimit.h>
27
29
 #include <linux/tty_flip.h>
..
..
@@ -130,12 +132,8 @@
130
132
 
131
133
 		l = l->next;
132
134
 
133
-		if (l == i->head && pass_counter++ > PASS_LIMIT) {
134
-			/* If we hit this, we're dead. */
135
-			printk_ratelimited(KERN_ERR
136
-				"serial8250: too much work for irq%d\n", irq);
135
+		if (l == i->head && pass_counter++ > PASS_LIMIT)
137
136
 			break;
138
-		}
139
137
 	} while (l != end);
140
138
 
141
139
 	spin_unlock(&i->lock);
..
..
@@ -334,9 +332,9 @@
334
332
 	 * hardware interrupt, we use a timer-based system.  The original
335
333
 	 * driver used to do this with IRQ0.
336
334
 	 */
337
-	if (!port->irq) {
335
+	if (!port->irq)
338
336
 		mod_timer(&up->timer, jiffies + uart_poll_timeout(port));
339
-	} else
337
+	else
340
338
 		retval = serial_link_irq_chain(up);
341
339
 
342
340
 	return retval;
..
..
@@ -575,6 +573,9 @@
575
573
 
576
574
 		up->port.dev = dev;
577
575
 
576
+		if (uart_console_enabled(&up->port))
577
+			pm_runtime_get_sync(up->port.dev);
578
+
578
579
 		serial8250_apply_quirks(up);
579
580
 		uart_add_one_port(drv, &up->port);
580
581
 	}
..
..
@@ -611,6 +612,14 @@
611
612
 	if (retval != 0)
612
613
 		port->cons = NULL;
613
614
 	return retval;
615
+}
616
+
617
+static int univ8250_console_exit(struct console *co)
618
+{
619
+	struct uart_port *port;
620
+
621
+	port = &serial8250_ports[co->index].port;
622
+	return serial8250_console_exit(port);
614
623
 }
615
624
 
616
625
 /**
..
..
@@ -671,6 +680,7 @@
671
680
 	.write		= univ8250_console_write,
672
681
 	.device		= uart_console_device,
673
682
 	.setup		= univ8250_console_setup,
683
+	.exit		= univ8250_console_exit,
674
684
 	.match		= univ8250_console_match,
675
685
 	.flags		= CON_PRINTBUFFER | CON_ANYTIME,
676
686
 	.index		= -1,
..
..
@@ -758,6 +768,7 @@
758
768
 	if (!console_suspend_enabled && uart_console(port) &&
759
769
 	    port->type != PORT_8250) {
760
770
 		unsigned char canary = 0xa5;
771
+
761
772
 		serial_out(up, UART_SCR, canary);
762
773
 		if (serial_in(up, UART_SCR) == canary)
763
774
 			up->canary = canary;
..
..
@@ -820,6 +831,7 @@
820
831
 		uart.port.flags		= p->flags;
821
832
 		uart.port.mapbase	= p->mapbase;
822
833
 		uart.port.hub6		= p->hub6;
834
+		uart.port.has_sysrq	= p->has_sysrq;
823
835
 		uart.port.private_data	= p->private_data;
824
836
 		uart.port.type		= p->type;
825
837
 		uart.port.serial_in	= p->serial_in;
..
..
@@ -987,6 +999,8 @@
987
999
 
988
1000
 	uart = serial8250_find_match_or_unused(&up->port);
989
1001
 	if (uart && uart->port.type != PORT_8250_CIR) {
1002
+		struct mctrl_gpios *gpios;
1003
+
990
1004
 		if (uart->port.dev)
991
1005
 			uart_remove_one_port(&serial8250_reg, &uart->port);
992
1006
 
..
..
@@ -1009,6 +1023,8 @@
1009
1023
 		uart->port.unthrottle	= up->port.unthrottle;
1010
1024
 		uart->port.rs485_config	= up->port.rs485_config;
1011
1025
 		uart->port.rs485	= up->port.rs485;
1026
+		uart->rs485_start_tx	= up->rs485_start_tx;
1027
+		uart->rs485_stop_tx	= up->rs485_stop_tx;
1012
1028
 		uart->dma		= up->dma;
1013
1029
 #ifdef CONFIG_ARCH_ROCKCHIP
1014
1030
 		uart->port.line		= up->port.line;
..
..
@@ -1017,11 +1033,29 @@
1017
1033
 		if (uart->port.fifosize && !uart->tx_loadsz)
1018
1034
 			uart->tx_loadsz = uart->port.fifosize;
1019
1035
 
1020
-		if (up->port.dev)
1036
+		if (up->port.dev) {
1021
1037
 			uart->port.dev = up->port.dev;
1038
+			ret = uart_get_rs485_mode(&uart->port);
1039
+			if (ret)
1040
+				goto err;
1041
+		}
1022
1042
 
1023
1043
 		if (up->port.flags & UPF_FIXED_TYPE)
1024
1044
 			uart->port.type = up->port.type;
1045
+
1046
+		/*
1047
+		 * Only call mctrl_gpio_init(), if the device has no ACPI
1048
+		 * companion device
1049
+		 */
1050
+		if (!has_acpi_companion(uart->port.dev)) {
1051
+			gpios = mctrl_gpio_init(&uart->port, 0);
1052
+			if (IS_ERR(gpios)) {
1053
+				ret = PTR_ERR(gpios);
1054
+				goto err;
1055
+			} else {
1056
+				uart->gpios = gpios;
1057
+			}
1058
+		}
1025
1059
 
1026
1060
 		serial8250_set_defaults(uart);
1027
1061
 
..
..
@@ -1129,6 +1163,7 @@
1129
1163
 		uart->port.type = PORT_UNKNOWN;
1130
1164
 		uart->port.dev = &serial8250_isa_devs->dev;
1131
1165
 		uart->capabilities = 0;
1166
+		serial8250_init_port(uart);
1132
1167
 		serial8250_apply_quirks(uart);
1133
1168
 		uart_add_one_port(&serial8250_reg, &uart->port);
1134
1169
 	} else {