Adding debian version 6.6.15-2.debian/6.6.15-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 245 insertions, 0 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
new file mode 100644
index 000000000..74dc3c014
--- /dev/null
+++ b/debian/patches-rt/0053-serial-samsung_tty-Use-port-lock-wrappers.patch
@@ -0,0 +1,245 @@
+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 */