summaryrefslogtreecommitdiffstats
path: root/debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch
diff options
context:
space:
mode:
Diffstat (limited to 'debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch')
-rw-r--r--debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch245
1 files changed, 0 insertions, 245 deletions
diff --git a/debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch b/debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch
deleted file mode 100644
index 74dc3c014..000000000
--- a/debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,245 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:44:10 +0206
-Subject: [PATCH 053/134] serial: samsung_tty: Use port lock wrappers
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
-
-When a serial port is used for kernel console output, then all
-modifications to the UART registers which are done from other contexts,
-e.g. getty, termios, are interference points for the kernel console.
-
-So far this has been ignored and the printk output is based on the
-principle of hope. The rework of the console infrastructure which aims to
-support threaded and atomic consoles, requires to mark sections which
-modify the UART registers as unsafe. This allows the atomic write function
-to make informed decisions and eventually to restore operational state. It
-also allows to prevent the regular UART code from modifying UART registers
-while printk output is in progress.
-
-All modifications of UART registers are guarded by the UART port lock,
-which provides an obvious synchronization point with the console
-infrastructure.
-
-To avoid adding this functionality to all UART drivers, wrap the
-spin_[un]lock*() invocations for uart_port::lock into helper functions
-which just contain the spin_[un]lock*() invocations for now. In a
-subsequent step these helpers will gain the console synchronization
-mechanisms.
-
-Converted with coccinelle. No functional change.
-
-Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20230914183831.587273-54-john.ogness@linutronix.de
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- drivers/tty/serial/samsung_tty.c | 50 +++++++++++++++++++--------------------
- 1 file changed, 25 insertions(+), 25 deletions(-)
-
---- a/drivers/tty/serial/samsung_tty.c
-+++ b/drivers/tty/serial/samsung_tty.c
-@@ -248,7 +248,7 @@ static void s3c24xx_serial_rx_enable(str
- unsigned int ucon, ufcon;
- int count = 10000;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- while (--count && !s3c24xx_serial_txempty_nofifo(port))
- udelay(100);
-@@ -262,7 +262,7 @@ static void s3c24xx_serial_rx_enable(str
- wr_regl(port, S3C2410_UCON, ucon);
-
- ourport->rx_enabled = 1;
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void s3c24xx_serial_rx_disable(struct uart_port *port)
-@@ -271,14 +271,14 @@ static void s3c24xx_serial_rx_disable(st
- unsigned long flags;
- unsigned int ucon;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- ucon = rd_regl(port, S3C2410_UCON);
- ucon &= ~S3C2410_UCON_RXIRQMODE;
- wr_regl(port, S3C2410_UCON, ucon);
-
- ourport->rx_enabled = 0;
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void s3c24xx_serial_stop_tx(struct uart_port *port)
-@@ -344,7 +344,7 @@ static void s3c24xx_serial_tx_dma_comple
- dma->tx_transfer_addr, dma->tx_size,
- DMA_TO_DEVICE);
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- uart_xmit_advance(port, count);
- ourport->tx_in_progress = 0;
-@@ -353,7 +353,7 @@ static void s3c24xx_serial_tx_dma_comple
- uart_write_wakeup(port);
-
- s3c24xx_serial_start_next_tx(ourport);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void enable_tx_dma(struct s3c24xx_uart_port *ourport)
-@@ -619,7 +619,7 @@ static void s3c24xx_serial_rx_dma_comple
- received = dma->rx_bytes_requested - state.residue;
- async_tx_ack(dma->rx_desc);
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- if (received)
- s3c24xx_uart_copy_rx_to_tty(ourport, t, received);
-@@ -631,7 +631,7 @@ static void s3c24xx_serial_rx_dma_comple
-
- s3c64xx_start_rx_dma(ourport);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void s3c64xx_start_rx_dma(struct s3c24xx_uart_port *ourport)
-@@ -722,7 +722,7 @@ static irqreturn_t s3c24xx_serial_rx_cha
- utrstat = rd_regl(port, S3C2410_UTRSTAT);
- rd_regl(port, S3C2410_UFSTAT);
-
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
-
- if (!(utrstat & S3C2410_UTRSTAT_TIMEOUT)) {
- s3c64xx_start_rx_dma(ourport);
-@@ -751,7 +751,7 @@ static irqreturn_t s3c24xx_serial_rx_cha
- wr_regl(port, S3C2410_UTRSTAT, S3C2410_UTRSTAT_TIMEOUT);
-
- finish:
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- return IRQ_HANDLED;
- }
-@@ -849,9 +849,9 @@ static irqreturn_t s3c24xx_serial_rx_cha
- struct s3c24xx_uart_port *ourport = dev_id;
- struct uart_port *port = &ourport->port;
-
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- s3c24xx_serial_rx_drain_fifo(ourport);
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- return IRQ_HANDLED;
- }
-@@ -932,11 +932,11 @@ static irqreturn_t s3c24xx_serial_tx_irq
- struct s3c24xx_uart_port *ourport = id;
- struct uart_port *port = &ourport->port;
-
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
-
- s3c24xx_serial_tx_chars(ourport);
-
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- return IRQ_HANDLED;
- }
-
-@@ -1033,7 +1033,7 @@ static void s3c24xx_serial_break_ctl(str
- unsigned long flags;
- unsigned int ucon;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- ucon = rd_regl(port, S3C2410_UCON);
-
-@@ -1044,7 +1044,7 @@ static void s3c24xx_serial_break_ctl(str
-
- wr_regl(port, S3C2410_UCON, ucon);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static int s3c24xx_serial_request_dma(struct s3c24xx_uart_port *p)
-@@ -1303,7 +1303,7 @@ static int s3c64xx_serial_startup(struct
- ourport->rx_enabled = 1;
- ourport->tx_enabled = 0;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- ufcon = rd_regl(port, S3C2410_UFCON);
- ufcon |= S3C2410_UFCON_RESETRX | S5PV210_UFCON_RXTRIG8;
-@@ -1313,7 +1313,7 @@ static int s3c64xx_serial_startup(struct
-
- enable_rx_pio(ourport);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- /* Enable Rx Interrupt */
- s3c24xx_clear_bit(port, S3C64XX_UINTM_RXD, S3C64XX_UINTM);
-@@ -1341,7 +1341,7 @@ static int apple_s5l_serial_startup(stru
- ourport->rx_enabled = 1;
- ourport->tx_enabled = 0;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- ufcon = rd_regl(port, S3C2410_UFCON);
- ufcon |= S3C2410_UFCON_RESETRX | S5PV210_UFCON_RXTRIG8;
-@@ -1351,7 +1351,7 @@ static int apple_s5l_serial_startup(stru
-
- enable_rx_pio(ourport);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- /* Enable Rx Interrupt */
- s3c24xx_set_bit(port, APPLE_S5L_UCON_RXTHRESH_ENA, S3C2410_UCON);
-@@ -1626,7 +1626,7 @@ static void s3c24xx_serial_set_termios(s
- ulcon |= S3C2410_LCON_PNONE;
- }
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- dev_dbg(port->dev,
- "setting ulcon to %08x, brddiv to %d, udivslot %08x\n",
-@@ -1684,7 +1684,7 @@ static void s3c24xx_serial_set_termios(s
- if ((termios->c_cflag & CREAD) == 0)
- port->ignore_status_mask |= RXSTAT_DUMMY_READ;
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static const char *s3c24xx_serial_type(struct uart_port *port)
-@@ -2376,14 +2376,14 @@ s3c24xx_serial_console_write(struct cons
- if (cons_uart->sysrq)
- locked = false;
- else if (oops_in_progress)
-- locked = spin_trylock_irqsave(&cons_uart->lock, flags);
-+ locked = uart_port_trylock_irqsave(cons_uart, &flags);
- else
-- spin_lock_irqsave(&cons_uart->lock, flags);
-+ uart_port_lock_irqsave(cons_uart, &flags);
-
- uart_console_write(cons_uart, s, count, s3c24xx_serial_console_putchar);
-
- if (locked)
-- spin_unlock_irqrestore(&cons_uart->lock, flags);
-+ uart_port_unlock_irqrestore(cons_uart, flags);
- }
-
- /* Shouldn't be __init, as it can be instantiated from other module */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-10 07:24:05 +0000