From 27d3313807296c3943a96ceef8c2b7279cb56962 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:39:59 +0200 Subject: Adding debian version 6.7.7-1. Signed-off-by: Daniel Baumann --- ...039-serial-mpc52xx-Use-port-lock-wrappers.patch | 89 ---------------------- 1 file changed, 89 deletions(-) delete mode 100644 debian/patches-rt/0039-serial-mpc52xx-Use-port-lock-wrappers.patch (limited to 'debian/patches-rt/0039-serial-mpc52xx-Use-port-lock-wrappers.patch') diff --git a/debian/patches-rt/0039-serial-mpc52xx-Use-port-lock-wrappers.patch b/debian/patches-rt/0039-serial-mpc52xx-Use-port-lock-wrappers.patch deleted file mode 100644 index ee7014a925..0000000000 --- a/debian/patches-rt/0039-serial-mpc52xx-Use-port-lock-wrappers.patch +++ /dev/null @@ -1,89 +0,0 @@ -From: Thomas Gleixner -Date: Thu, 14 Sep 2023 20:43:56 +0206 -Subject: [PATCH 039/134] serial: mpc52xx: 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 -Signed-off-by: John Ogness -Link: https://lore.kernel.org/r/20230914183831.587273-40-john.ogness@linutronix.de -Signed-off-by: Greg Kroah-Hartman -Signed-off-by: Sebastian Andrzej Siewior ---- - drivers/tty/serial/mpc52xx_uart.c | 12 ++++++------ - 1 file changed, 6 insertions(+), 6 deletions(-) - ---- a/drivers/tty/serial/mpc52xx_uart.c -+++ b/drivers/tty/serial/mpc52xx_uart.c -@@ -1096,14 +1096,14 @@ static void - mpc52xx_uart_break_ctl(struct uart_port *port, int ctl) - { - unsigned long flags; -- spin_lock_irqsave(&port->lock, flags); -+ uart_port_lock_irqsave(port, &flags); - - if (ctl == -1) - psc_ops->command(port, MPC52xx_PSC_START_BRK); - else - psc_ops->command(port, MPC52xx_PSC_STOP_BRK); - -- spin_unlock_irqrestore(&port->lock, flags); -+ uart_port_unlock_irqrestore(port, flags); - } - - static int -@@ -1214,7 +1214,7 @@ mpc52xx_uart_set_termios(struct uart_por - } - - /* Get the lock */ -- spin_lock_irqsave(&port->lock, flags); -+ uart_port_lock_irqsave(port, &flags); - - /* Do our best to flush TX & RX, so we don't lose anything */ - /* But we don't wait indefinitely ! */ -@@ -1250,7 +1250,7 @@ mpc52xx_uart_set_termios(struct uart_por - psc_ops->command(port, MPC52xx_PSC_RX_ENABLE); - - /* We're all set, release the lock */ -- spin_unlock_irqrestore(&port->lock, flags); -+ uart_port_unlock_irqrestore(port, flags); - } - - static const char * -@@ -1477,11 +1477,11 @@ mpc52xx_uart_int(int irq, void *dev_id) - struct uart_port *port = dev_id; - irqreturn_t ret; - -- spin_lock(&port->lock); -+ uart_port_lock(port); - - ret = psc_ops->handle_irq(port); - -- spin_unlock(&port->lock); -+ uart_port_unlock(port); - - return ret; - } -- cgit v1.2.3