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-rw-r--r--debian/patches-rt/0021-serial-atmel-Use-port-lock-wrappers.patch119
1 files changed, 0 insertions, 119 deletions
diff --git a/debian/patches-rt/0021-serial-atmel-Use-port-lock-wrappers.patch b/debian/patches-rt/0021-serial-atmel-Use-port-lock-wrappers.patch
deleted file mode 100644
index ab70954a10..0000000000
--- a/debian/patches-rt/0021-serial-atmel-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,119 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:38 +0206
-Subject: [PATCH 021/134] serial: atmel: 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/20230914183831.587273-22-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/atmel_serial.c | 24 ++++++++++++------------
- 1 file changed, 12 insertions(+), 12 deletions(-)
-
---- a/drivers/tty/serial/atmel_serial.c
-+++ b/drivers/tty/serial/atmel_serial.c
-@@ -861,7 +861,7 @@ static void atmel_complete_tx_dma(void *
- struct dma_chan *chan = atmel_port->chan_tx;
- unsigned long flags;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- if (chan)
- dmaengine_terminate_all(chan);
-@@ -893,7 +893,7 @@ static void atmel_complete_tx_dma(void *
- atmel_port->tx_done_mask);
- }
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void atmel_release_tx_dma(struct uart_port *port)
-@@ -1711,9 +1711,9 @@ static void atmel_tasklet_rx_func(struct
- struct uart_port *port = &atmel_port->uart;
-
- /* The interrupt handler does not take the lock */
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- atmel_port->schedule_rx(port);
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- }
-
- static void atmel_tasklet_tx_func(struct tasklet_struct *t)
-@@ -1723,9 +1723,9 @@ static void atmel_tasklet_tx_func(struct
- struct uart_port *port = &atmel_port->uart;
-
- /* The interrupt handler does not take the lock */
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- atmel_port->schedule_tx(port);
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- }
-
- static void atmel_init_property(struct atmel_uart_port *atmel_port,
-@@ -2175,7 +2175,7 @@ static void atmel_set_termios(struct uar
- } else
- mode |= ATMEL_US_PAR_NONE;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- port->read_status_mask = ATMEL_US_OVRE;
- if (termios->c_iflag & INPCK)
-@@ -2377,22 +2377,22 @@ static void atmel_set_termios(struct uar
- else
- atmel_disable_ms(port);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void atmel_set_ldisc(struct uart_port *port, struct ktermios *termios)
- {
- if (termios->c_line == N_PPS) {
- port->flags |= UPF_HARDPPS_CD;
-- spin_lock_irq(&port->lock);
-+ uart_port_lock_irq(port);
- atmel_enable_ms(port);
-- spin_unlock_irq(&port->lock);
-+ uart_port_unlock_irq(port);
- } else {
- port->flags &= ~UPF_HARDPPS_CD;
- if (!UART_ENABLE_MS(port, termios->c_cflag)) {
-- spin_lock_irq(&port->lock);
-+ uart_port_lock_irq(port);
- atmel_disable_ms(port);
-- spin_unlock_irq(&port->lock);
-+ uart_port_unlock_irq(port);
- }
- }
- }