shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 10:31:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

Revert "serial: Make uart_handle_cts_change() status param bool active"

Browse Source 
This reverts commit 04de065652 which is
commit 968d64578e upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I47ee264f550533f670ef559661d69b923e2ca6c4
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2024-11-16 14:06:59 +00:00
parent d82cacc625
commit 3aee75909f
5 changed files with 10 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/tty/serial/imx.c
View File

@@ -801,7 +801,7 @@ static irqreturn_t __imx_uart_rtsint(int irq, void *dev_id)
imx_uart_writel(sport, USR1_RTSD, USR1);
usr1 = imx_uart_readl(sport, USR1) & USR1_RTSS;
uart_handle_cts_change(&sport->port, usr1);
uart_handle_cts_change(&sport->port, !!usr1);
wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
return IRQ_HANDLED;

2
drivers/tty/serial/max3100.c
View File

@@ -250,7 +250,7 @@ static int max3100_handlerx_unlocked(struct max3100_port *s, u16 rx)
cts = (rx & MAX3100_CTS) > 0;
if (s->cts != cts) {
s->cts = cts;
uart_handle_cts_change(&s->port, cts);
uart_handle_cts_change(&s->port, cts ? TIOCM_CTS : 0);
}
return ret;

3
drivers/tty/serial/max310x.c
View File

@@ -843,7 +843,8 @@ static irqreturn_t max310x_port_irq(struct max310x_port *s, int portno)
if (ists & MAX310X_IRQ_CTS_BIT) {
lsr = max310x_port_read(port, MAX310X_LSR_IRQSTS_REG);
uart_handle_cts_change(port, lsr & MAX310X_LSR_CTS_BIT);
uart_handle_cts_change(port,
!!(lsr & MAX310X_LSR_CTS_BIT));
}
if (rxlen)
max310x_handle_rx(port, rxlen);

8
drivers/tty/serial/serial_core.c
View File

@@ -3327,11 +3327,11 @@ EXPORT_SYMBOL_GPL(uart_handle_dcd_change);
/**
* uart_handle_cts_change - handle a change of clear-to-send state
* @uport: uart_port structure for the open port
* @active: new clear-to-send status
* @status: new clear to send status, nonzero if active
*
* Caller must hold uport->lock.
*/
void uart_handle_cts_change(struct uart_port *uport, bool active)
void uart_handle_cts_change(struct uart_port *uport, unsigned int status)
{
lockdep_assert_held_once(&uport->lock);
@@ -3339,13 +3339,13 @@ void uart_handle_cts_change(struct uart_port *uport, bool active)
if (uart_softcts_mode(uport)) {
if (uport->hw_stopped) {
if (active) {
if (status) {
uport->hw_stopped = 0;
uport->ops->start_tx(uport);
uart_write_wakeup(uport);
}
} else {
if (!active) {
if (!status) {
uport->hw_stopped = 1;
uport->ops->stop_tx(uport);
}

3
include/linux/serial_core.h
View File

@@ -900,7 +900,8 @@ static inline bool uart_softcts_mode(struct uart_port *uport)
*/
extern void uart_handle_dcd_change(struct uart_port *uport, bool active);
extern void uart_handle_cts_change(struct uart_port *uport, bool active);
extern void uart_handle_cts_change(struct uart_port *uport,
unsigned int status);
extern void uart_insert_char(struct uart_port *port, unsigned int status,
unsigned int overrun, unsigned int ch, unsigned int flag);