Merge tag 'tty-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the big set of tty and serial driver changes for 6.6-rc1.

  Lots of cleanups in here this cycle, and some driver updates. Short
  summary is:

   - Jiri's continued work to make the tty code and apis be a bit more
     sane with regards to modern kernel coding style and types

   - cpm_uart driver updates

   - n_gsm updates and fixes

   - meson driver updates

   - sc16is7xx driver updates

   - 8250 driver updates for different hardware types

   - qcom-geni driver fixes

   - tegra serial driver change

   - stm32 driver updates

   - synclink_gt driver cleanups

   - tty structure size reduction

  All of these have been in linux-next this week with no reported
  issues. The last bit of cleanups from Jiri and the tty structure size
  reduction came in last week, a bit late but as they were just style
  changes and size reductions, I figured they should get into this merge
  cycle so that others can work on top of them with no merge conflicts"

* tag 'tty-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (199 commits)
  tty: shrink the size of struct tty_struct by 40 bytes
  tty: n_tty: deduplicate copy code in n_tty_receive_buf_real_raw()
  tty: n_tty: extract ECHO_OP processing to a separate function
  tty: n_tty: unify counts to size_t
  tty: n_tty: use u8 for chars and flags
  tty: n_tty: simplify chars_in_buffer()
  tty: n_tty: remove unsigned char casts from character constants
  tty: n_tty: move newline handling to a separate function
  tty: n_tty: move canon handling to a separate function
  tty: n_tty: use MASK() for masking out size bits
  tty: n_tty: make n_tty_data::num_overrun unsigned
  tty: n_tty: use time_is_before_jiffies() in n_tty_receive_overrun()
  tty: n_tty: use 'num' for writes' counts
  tty: n_tty: use output character directly
  tty: n_tty: make flow of n_tty_receive_buf_common() a bool
  Revert "tty: serial: meson: Add a earlycon for the T7 SoC"
  Documentation: devices.txt: Fix minors for ttyCPM*
  Documentation: devices.txt: Remove ttySIOC*
  Documentation: devices.txt: Remove ttyIOC*
  serial: 8250_bcm7271: improve bcm7271 8250 port
  ...

16 files changed, 18 insertions, 76 deletions

diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 3d7473531ab1..c80258ec332f 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -421,7 +421,7 @@ register_cpus(void)
 arch_initcall(register_cpus);
 
 #ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_reboot_handler(int unused)
+static void sysrq_reboot_handler(u8 unused)
 {
 	machine_halt();
 }
diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
index 6dc952b0df4a..d6139dbae4ac 100644
--- a/arch/alpha/kernel/srmcons.c
+++ b/arch/alpha/kernel/srmcons.c
@@ -129,9 +129,8 @@ srmcons_do_write(struct tty_port *port, const char *buf, int count)
 	return count;
 }
 
-static int
-srmcons_write(struct tty_struct *tty,
-	      const unsigned char *buf, int count)
+static ssize_t
+srmcons_write(struct tty_struct *tty, const u8 *buf, size_t count)
 {
 	unsigned long flags;
 
diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index c8f344596285..96225c421194 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -108,7 +108,7 @@
 			};
 
 			uart_AO: serial@1c00 {
-				compatible = "amlogic,meson-gx-uart",
+				compatible = "amlogic,meson-a1-uart",
 					     "amlogic,meson-ao-uart";
 				reg = <0x0 0x1c00 0x0 0x18>;
 				interrupts = <GIC_SPI 25 IRQ_TYPE_EDGE_RISING>;
@@ -118,7 +118,7 @@
 			};
 
 			uart_AO_B: serial@2000 {
-				compatible = "amlogic,meson-gx-uart",
+				compatible = "amlogic,meson-a1-uart",
 					     "amlogic,meson-ao-uart";
 				reg = <0x0 0x2000 0x0 0x18>;
 				interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>;
diff --git a/arch/loongarch/kernel/sysrq.c b/arch/loongarch/kernel/sysrq.c
index 366baef72d29..e663c10fa39c 100644
--- a/arch/loongarch/kernel/sysrq.c
+++ b/arch/loongarch/kernel/sysrq.c
@@ -43,7 +43,7 @@ static void sysrq_tlbdump_othercpus(struct work_struct *dummy)
 static DECLARE_WORK(sysrq_tlbdump, sysrq_tlbdump_othercpus);
 #endif
 
-static void sysrq_handle_tlbdump(int key)
+static void sysrq_handle_tlbdump(u8 key)
 {
 	sysrq_tlbdump_single(NULL);
 #ifdef CONFIG_SMP
diff --git a/arch/m68k/emu/nfcon.c b/arch/m68k/emu/nfcon.c
index 6fdc13610565..3a74d493eb3e 100644
--- a/arch/m68k/emu/nfcon.c
+++ b/arch/m68k/emu/nfcon.c
@@ -70,16 +70,16 @@ static void nfcon_tty_close(struct tty_struct *tty, struct file *filp)
 {
 }
 
-static int nfcon_tty_write(struct tty_struct *tty, const unsigned char *buf,
-			   int count)
+static ssize_t nfcon_tty_write(struct tty_struct *tty, const u8 *buf,
+			       size_t count)
 {
 	nfputs(buf, count);
 	return count;
 }
 
-static int nfcon_tty_put_char(struct tty_struct *tty, unsigned char ch)
+static int nfcon_tty_put_char(struct tty_struct *tty, u8 ch)
 {
-	char temp[2] = { ch, 0 };
+	u8 temp[2] = { ch, 0 };
 
 	nf_call(stderr_id, virt_to_phys(temp));
 	return 1;
diff --git a/arch/mips/kernel/sysrq.c b/arch/mips/kernel/sysrq.c
index 9c1a2019113b..2e98049fe783 100644
--- a/arch/mips/kernel/sysrq.c
+++ b/arch/mips/kernel/sysrq.c
@@ -44,7 +44,7 @@ static void sysrq_tlbdump_othercpus(struct work_struct *dummy)
 static DECLARE_WORK(sysrq_tlbdump, sysrq_tlbdump_othercpus);
 #endif
 
-static void sysrq_handle_tlbdump(int key)
+static void sysrq_handle_tlbdump(u8 key)
 {
 	sysrq_tlbdump_single(NULL);
 #ifdef CONFIG_SMP
diff --git a/arch/powerpc/include/asm/fs_pd.h b/arch/powerpc/include/asm/fs_pd.h
deleted file mode 100644
index d530f68b4eef..000000000000
--- a/arch/powerpc/include/asm/fs_pd.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Platform information definitions.
- *
- * 2006 (c) MontaVista Software, Inc.
- * Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#ifndef FS_PD_H
-#define FS_PD_H
-#include <sysdev/fsl_soc.h>
-#include <asm/time.h>
-
-static inline int uart_baudrate(void)
-{
-        return get_baudrate();
-}
-
-static inline int uart_clock(void)
-{
-        return ppc_proc_freq;
-}
-
-#endif
diff --git a/arch/powerpc/platforms/8xx/mpc885ads_setup.c b/arch/powerpc/platforms/8xx/mpc885ads_setup.c
index 76c7cd78c17e..2d899be746eb 100644
--- a/arch/powerpc/platforms/8xx/mpc885ads_setup.c
+++ b/arch/powerpc/platforms/8xx/mpc885ads_setup.c
@@ -21,7 +21,6 @@
 #include <linux/device.h>
 #include <linux/delay.h>
 
-#include <linux/fs_uart_pd.h>
 #include <linux/fsl_devices.h>
 #include <linux/mii.h>
 #include <linux/of_address.h>
diff --git a/arch/powerpc/platforms/8xx/tqm8xx_setup.c b/arch/powerpc/platforms/8xx/tqm8xx_setup.c
index 1670dfd30809..d97a7910c594 100644
--- a/arch/powerpc/platforms/8xx/tqm8xx_setup.c
+++ b/arch/powerpc/platforms/8xx/tqm8xx_setup.c
@@ -24,7 +24,6 @@
 #include <linux/device.h>
 #include <linux/delay.h>
 
-#include <linux/fs_uart_pd.h>
 #include <linux/fsl_devices.h>
 #include <linux/mii.h>
 #include <linux/of_fdt.h>
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 528506f6e2b8..3949ceb79e64 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -22,7 +22,6 @@
 #include <linux/phy.h>
 #include <linux/spi/spi.h>
 #include <linux/fsl_devices.h>
-#include <linux/fs_uart_pd.h>
 #include <linux/reboot.h>
 
 #include <linux/atomic.h>
@@ -35,7 +34,6 @@
 #include <asm/cpm2.h>
 #include <asm/fsl_hcalls.h>	/* For the Freescale hypervisor */
 
-extern void init_smc_ioports(struct fs_uart_platform_info*);
 static phys_addr_t immrbase = -1;
 
 phys_addr_t get_immrbase(void)
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 5888fcd8e408..b3b94cd37713 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -3988,7 +3988,7 @@ static void xmon_init(int enable)
 }
 
 #ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_handle_xmon(int key)
+static void sysrq_handle_xmon(u8 key)
 {
 	if (xmon_is_locked_down()) {
 		clear_all_bpt();
diff --git a/arch/sparc/include/asm/vio.h b/arch/sparc/include/asm/vio.h
index 8a0c3c11c9ce..587fb7841096 100644
--- a/arch/sparc/include/asm/vio.h
+++ b/arch/sparc/include/asm/vio.h
@@ -284,7 +284,7 @@ struct vio_dring_state {
 	struct ldc_trans_cookie	cookies[VIO_MAX_RING_COOKIES];
 };
 
-#define VIO_TAG_SIZE		((int)sizeof(struct vio_msg_tag))
+#define VIO_TAG_SIZE		(sizeof(struct vio_msg_tag))
 #define VIO_VCC_MTU_SIZE	(LDC_PACKET_SIZE - VIO_TAG_SIZE)
 
 struct vio_vcc {
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index 1ea3f37fa985..529adfecd58c 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -295,7 +295,7 @@ void arch_trigger_cpumask_backtrace(const cpumask_t *mask, int exclude_cpu)
 
 #ifdef CONFIG_MAGIC_SYSRQ
 
-static void sysrq_handle_globreg(int key)
+static void sysrq_handle_globreg(u8 key)
 {
 	trigger_all_cpu_backtrace();
 }
@@ -370,7 +370,7 @@ static void pmu_snapshot_all_cpus(void)
 	spin_unlock_irqrestore(&global_cpu_snapshot_lock, flags);
 }
 
-static void sysrq_handle_globpmu(int key)
+static void sysrq_handle_globpmu(u8 key)
 {
 	pmu_snapshot_all_cpus();
 }
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 02b0befd6763..b98545f3edb5 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -184,7 +184,7 @@ void line_flush_chars(struct tty_struct *tty)
 	line_flush_buffer(tty);
 }
 
-int line_write(struct tty_struct *tty, const unsigned char *buf, int len)
+ssize_t line_write(struct tty_struct *tty, const u8 *buf, size_t len)
 {
 	struct line *line = tty->driver_data;
 	unsigned long flags;
diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
index f15be75a3bf3..e84fb9b4165e 100644
--- a/arch/um/drivers/line.h
+++ b/arch/um/drivers/line.h
@@ -64,8 +64,7 @@ extern void line_cleanup(struct tty_struct *tty);
 extern void line_hangup(struct tty_struct *tty);
 extern int line_setup(char **conf, unsigned nlines, char **def,
 		      char *init, char *name);
-extern int line_write(struct tty_struct *tty, const unsigned char *buf,
-		      int len);
+extern ssize_t line_write(struct tty_struct *tty, const u8 *buf, size_t len);
 extern unsigned int line_chars_in_buffer(struct tty_struct *tty);
 extern void line_flush_buffer(struct tty_struct *tty);
 extern void line_flush_chars(struct tty_struct *tty);
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 10b79d3c74e0..7d1f8b398a46 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -52,8 +52,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
 }
 
 
-static int rs_write(struct tty_struct * tty,
-		    const unsigned char *buf, int count)
+static ssize_t rs_write(struct tty_struct * tty, const u8 *buf, size_t count)
 {
 	/* see drivers/char/serialX.c to reference original version */
 
@@ -82,32 +81,12 @@ static void rs_poll(struct timer_list *unused)
 		mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
 }
 
-
-static int rs_put_char(struct tty_struct *tty, unsigned char ch)
-{
-	return rs_write(tty, &ch, 1);
-}
-
-static void rs_flush_chars(struct tty_struct *tty)
-{
-}
-
 static unsigned int rs_write_room(struct tty_struct *tty)
 {
 	/* Let's say iss can always accept 2K characters.. */
 	return 2 * 1024;
 }
 
-static void rs_hangup(struct tty_struct *tty)
-{
-	/* Stub, once again.. */
-}
-
-static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-	/* Stub, once again.. */
-}
-
 static int rs_proc_show(struct seq_file *m, void *v)
 {
 	seq_printf(m, "serinfo:1.0 driver:0.1\n");
@@ -118,11 +97,7 @@ static const struct tty_operations serial_ops = {
 	.open = rs_open,
 	.close = rs_close,
 	.write = rs_write,
-	.put_char = rs_put_char,
-	.flush_chars = rs_flush_chars,
 	.write_room = rs_write_room,
-	.hangup = rs_hangup,
-	.wait_until_sent = rs_wait_until_sent,
 	.proc_show = rs_proc_show,
 };