[PATCH v2 5/6] serial: Use UART_XMIT_SIZE
Ilpo Järvinen
ilpo.jarvinen at linux.intel.com
Tue Jun 21 05:49:57 PDT 2022
Both UART_XMIT_SIZE and SERIAL_XMIT_SIZE are defined. Make them all
UART_XMIT_SIZE.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
---
drivers/tty/amiserial.c | 18 +++++++++---------
drivers/tty/mips_ejtag_fdc.c | 2 +-
drivers/tty/serial/meson_uart.c | 2 +-
drivers/tty/serial/owl-uart.c | 2 +-
drivers/tty/serial/rda-uart.c | 2 +-
include/linux/serial.h | 6 ------
include/linux/serial_core.h | 1 +
7 files changed, 14 insertions(+), 19 deletions(-)
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index afb2d373dd47..5458e2b1c125 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -51,6 +51,7 @@
#include <linux/seq_file.h>
#include <linux/serial.h>
#include <linux/serial_reg.h>
+#include <linux/serial_core.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/slab.h>
@@ -283,12 +284,12 @@ static void transmit_chars(struct serial_state *info)
amiga_custom.serdat = info->xmit.buf[info->xmit.tail++] | 0x100;
mb();
- info->xmit.tail = info->xmit.tail & (SERIAL_XMIT_SIZE-1);
+ info->xmit.tail = info->xmit.tail & (UART_XMIT_SIZE - 1);
info->icount.tx++;
if (CIRC_CNT(info->xmit.head,
info->xmit.tail,
- SERIAL_XMIT_SIZE) < WAKEUP_CHARS)
+ UART_XMIT_SIZE) < WAKEUP_CHARS)
tty_wakeup(info->tport.tty);
#ifdef SERIAL_DEBUG_INTR
@@ -708,13 +709,13 @@ static int rs_put_char(struct tty_struct *tty, unsigned char ch)
local_irq_save(flags);
if (CIRC_SPACE(info->xmit.head,
info->xmit.tail,
- SERIAL_XMIT_SIZE) == 0) {
+ UART_XMIT_SIZE) == 0) {
local_irq_restore(flags);
return 0;
}
info->xmit.buf[info->xmit.head++] = ch;
- info->xmit.head &= SERIAL_XMIT_SIZE-1;
+ info->xmit.head &= UART_XMIT_SIZE - 1;
local_irq_restore(flags);
return 1;
}
@@ -753,15 +754,14 @@ static int rs_write(struct tty_struct * tty, const unsigned char *buf, int count
while (1) {
c = CIRC_SPACE_TO_END(info->xmit.head,
info->xmit.tail,
- SERIAL_XMIT_SIZE);
+ UART_XMIT_SIZE);
if (count < c)
c = count;
if (c <= 0) {
break;
}
memcpy(info->xmit.buf + info->xmit.head, buf, c);
- info->xmit.head = ((info->xmit.head + c) &
- (SERIAL_XMIT_SIZE-1));
+ info->xmit.head = (info->xmit.head + c) & (UART_XMIT_SIZE - 1);
buf += c;
count -= c;
ret += c;
@@ -788,14 +788,14 @@ static unsigned int rs_write_room(struct tty_struct *tty)
{
struct serial_state *info = tty->driver_data;
- return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ return CIRC_SPACE(info->xmit.head, info->xmit.tail, UART_XMIT_SIZE);
}
static unsigned int rs_chars_in_buffer(struct tty_struct *tty)
{
struct serial_state *info = tty->driver_data;
- return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ return CIRC_CNT(info->xmit.head, info->xmit.tail, UART_XMIT_SIZE);
}
static void rs_flush_buffer(struct tty_struct *tty)
diff --git a/drivers/tty/mips_ejtag_fdc.c b/drivers/tty/mips_ejtag_fdc.c
index 49907427a165..e81701a66429 100644
--- a/drivers/tty/mips_ejtag_fdc.c
+++ b/drivers/tty/mips_ejtag_fdc.c
@@ -916,7 +916,7 @@ static int mips_ejtag_fdc_tty_probe(struct mips_cdmm_device *dev)
mips_ejtag_fdc_write(priv, REG_FDCFG, cfg);
/* Make each port's xmit FIFO big enough to fill FDC TX FIFO */
- priv->xmit_size = min(tx_fifo * 4, (unsigned int)SERIAL_XMIT_SIZE);
+ priv->xmit_size = min(tx_fifo * 4, (unsigned int)UART_XMIT_SIZE);
driver = tty_alloc_driver(NUM_TTY_CHANNELS, TTY_DRIVER_REAL_RAW);
if (IS_ERR(driver))
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 4869c0059c98..6c8db19fd572 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -162,7 +162,7 @@ static void meson_uart_start_tx(struct uart_port *port)
ch = xmit->buf[xmit->tail];
writel(ch, port->membase + AML_UART_WFIFO);
- xmit->tail = (xmit->tail+1) & (SERIAL_XMIT_SIZE - 1);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
}
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index 44d20e5a7dd3..888e17e3f25f 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -201,7 +201,7 @@ static void owl_uart_send_chars(struct uart_port *port)
ch = xmit->buf[xmit->tail];
owl_uart_write(port, ch, OWL_UART_TXDAT);
- xmit->tail = (xmit->tail + 1) & (SERIAL_XMIT_SIZE - 1);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
}
diff --git a/drivers/tty/serial/rda-uart.c b/drivers/tty/serial/rda-uart.c
index f556b4955f59..feb2054aba37 100644
--- a/drivers/tty/serial/rda-uart.c
+++ b/drivers/tty/serial/rda-uart.c
@@ -353,7 +353,7 @@ static void rda_uart_send_chars(struct uart_port *port)
ch = xmit->buf[xmit->tail];
rda_uart_write(port, ch, RDA_UART_RXTX_BUFFER);
- xmit->tail = (xmit->tail + 1) & (SERIAL_XMIT_SIZE - 1);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
}
diff --git a/include/linux/serial.h b/include/linux/serial.h
index 0b8b7d7c8f33..70a9866e4abb 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -9,7 +9,6 @@
#ifndef _LINUX_SERIAL_H
#define _LINUX_SERIAL_H
-#include <asm/page.h>
#include <uapi/linux/serial.h>
/* Helper for dealing with UART_LCR_WLEN* defines */
@@ -25,11 +24,6 @@ struct async_icount {
__u32 buf_overrun;
};
-/*
- * The size of the serial xmit buffer is 1 page, or 4096 bytes
- */
-#define SERIAL_XMIT_SIZE PAGE_SIZE
-
#include <linux/compiler.h>
#endif /* _LINUX_SERIAL_H */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 5518b70177b3..1767dee98021 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -296,6 +296,7 @@ struct uart_state {
struct uart_port *uart_port;
};
+/* The size of the serial xmit buffer is 1 page, or 4096 bytes */
#define UART_XMIT_SIZE PAGE_SIZE
--
2.30.2
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