From e636c8d336489bf3eed5878299e6cc045bbad077 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:17:29 +0000
Subject: [PATCH] debug lk
---
kernel/drivers/staging/greybus/uart.c | 69 ++++++++++++----------------------
1 files changed, 25 insertions(+), 44 deletions(-)
diff --git a/kernel/drivers/staging/greybus/uart.c b/kernel/drivers/staging/greybus/uart.c
index 2e9006a..edaa83a 100644
--- a/kernel/drivers/staging/greybus/uart.c
+++ b/kernel/drivers/staging/greybus/uart.c
@@ -28,8 +28,8 @@
#include <linux/kfifo.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
+#include <linux/greybus.h>
-#include "greybus.h"
#include "gbphy.h"
#define GB_NUM_MINORS 16 /* 16 is more than enough */
@@ -39,14 +39,6 @@
#define GB_UART_WRITE_ROOM_MARGIN 1 /* leave some space in fifo */
#define GB_UART_FIRMWARE_CREDITS 4096
#define GB_UART_CREDIT_WAIT_TIMEOUT_MSEC 10000
-
-struct gb_tty_line_coding {
- __le32 rate;
- __u8 format;
- __u8 parity;
- __u8 data_bits;
- __u8 flow_control;
-};
struct gb_tty {
struct gbphy_device *gbphy_dev;
@@ -66,7 +58,7 @@
struct mutex mutex;
u8 ctrlin; /* input control lines */
u8 ctrlout; /* output control lines */
- struct gb_tty_line_coding line_coding;
+ struct gb_uart_set_line_coding_request line_coding;
struct work_struct tx_work;
struct kfifo write_fifo;
bool close_pending;
@@ -288,12 +280,9 @@
static int send_line_coding(struct gb_tty *tty)
{
- struct gb_uart_set_line_coding_request request;
-
- memcpy(&request, &tty->line_coding,
- sizeof(tty->line_coding));
return gb_operation_sync(tty->connection, GB_UART_TYPE_SET_LINE_CODING,
- &request, sizeof(request), NULL, 0);
+ &tty->line_coding, sizeof(tty->line_coding),
+ NULL, 0);
}
static int send_control(struct gb_tty *gb_tty, u8 control)
@@ -493,9 +482,9 @@
static void gb_tty_set_termios(struct tty_struct *tty,
struct ktermios *termios_old)
{
+ struct gb_uart_set_line_coding_request newline;
struct gb_tty *gb_tty = tty->driver_data;
struct ktermios *termios = &tty->termios;
- struct gb_tty_line_coding newline;
u8 newctrl = gb_tty->ctrlout;
newline.rate = cpu_to_le32(tty_get_baud_rate(tty));
@@ -616,40 +605,36 @@
}
}
-static int get_serial_info(struct gb_tty *gb_tty,
- struct serial_struct __user *info)
+static int get_serial_info(struct tty_struct *tty,
+ struct serial_struct *ss)
{
- struct serial_struct tmp;
+ struct gb_tty *gb_tty = tty->driver_data;
- memset(&tmp, 0, sizeof(tmp));
- tmp.type = PORT_16550A;
- tmp.line = gb_tty->minor;
- tmp.xmit_fifo_size = 16;
- tmp.baud_base = 9600;
- tmp.close_delay = gb_tty->port.close_delay / 10;
- tmp.closing_wait =
+ ss->type = PORT_16550A;
+ ss->line = gb_tty->minor;
+ ss->xmit_fifo_size = 16;
+ ss->baud_base = 9600;
+ ss->close_delay = jiffies_to_msecs(gb_tty->port.close_delay) / 10;
+ ss->closing_wait =
gb_tty->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
- ASYNC_CLOSING_WAIT_NONE : gb_tty->port.closing_wait / 10;
+ ASYNC_CLOSING_WAIT_NONE :
+ jiffies_to_msecs(gb_tty->port.closing_wait) / 10;
- if (copy_to_user(info, &tmp, sizeof(tmp)))
- return -EFAULT;
return 0;
}
-static int set_serial_info(struct gb_tty *gb_tty,
- struct serial_struct __user *newinfo)
+static int set_serial_info(struct tty_struct *tty,
+ struct serial_struct *ss)
{
- struct serial_struct new_serial;
+ struct gb_tty *gb_tty = tty->driver_data;
unsigned int closing_wait;
unsigned int close_delay;
int retval = 0;
- if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
- return -EFAULT;
-
- close_delay = new_serial.close_delay * 10;
- closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
- ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
+ close_delay = msecs_to_jiffies(ss->close_delay * 10);
+ closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+ ASYNC_CLOSING_WAIT_NONE :
+ msecs_to_jiffies(ss->closing_wait * 10);
mutex_lock(&gb_tty->port.mutex);
if (!capable(CAP_SYS_ADMIN)) {
@@ -726,12 +711,6 @@
struct gb_tty *gb_tty = tty->driver_data;
switch (cmd) {
- case TIOCGSERIAL:
- return get_serial_info(gb_tty,
- (struct serial_struct __user *)arg);
- case TIOCSSERIAL:
- return set_serial_info(gb_tty,
- (struct serial_struct __user *)arg);
case TIOCMIWAIT:
return wait_serial_change(gb_tty, arg);
}
@@ -827,6 +806,8 @@
.tiocmget = gb_tty_tiocmget,
.tiocmset = gb_tty_tiocmset,
.get_icount = gb_tty_get_icount,
+ .set_serial = set_serial_info,
+ .get_serial = get_serial_info,
};
static const struct tty_port_operations gb_port_ops = {
--
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