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-rw-r--r--debian/patches-rt/0022-serial-bcm63xx-uart-Use-port-lock-wrappers.patch128
1 files changed, 0 insertions, 128 deletions
diff --git a/debian/patches-rt/0022-serial-bcm63xx-uart-Use-port-lock-wrappers.patch b/debian/patches-rt/0022-serial-bcm63xx-uart-Use-port-lock-wrappers.patch
deleted file mode 100644
index 90efec4080..0000000000
--- a/debian/patches-rt/0022-serial-bcm63xx-uart-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,128 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:39 +0206
-Subject: [PATCH 022/134] serial: bcm63xx-uart: 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>
-Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20230914183831.587273-23-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/bcm63xx_uart.c | 22 +++++++++++-----------
- 1 file changed, 11 insertions(+), 11 deletions(-)
-
---- a/drivers/tty/serial/bcm63xx_uart.c
-+++ b/drivers/tty/serial/bcm63xx_uart.c
-@@ -201,7 +201,7 @@ static void bcm_uart_break_ctl(struct ua
- unsigned long flags;
- unsigned int val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- val = bcm_uart_readl(port, UART_CTL_REG);
- if (ctl)
-@@ -210,7 +210,7 @@ static void bcm_uart_break_ctl(struct ua
- val &= ~UART_CTL_XMITBRK_MASK;
- bcm_uart_writel(port, val, UART_CTL_REG);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- /*
-@@ -332,7 +332,7 @@ static irqreturn_t bcm_uart_interrupt(in
- unsigned int irqstat;
-
- port = dev_id;
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
-
- irqstat = bcm_uart_readl(port, UART_IR_REG);
- if (irqstat & UART_RX_INT_STAT)
-@@ -353,7 +353,7 @@ static irqreturn_t bcm_uart_interrupt(in
- estat & UART_EXTINP_DCD_MASK);
- }
-
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- return IRQ_HANDLED;
- }
-
-@@ -451,9 +451,9 @@ static void bcm_uart_shutdown(struct uar
- {
- unsigned long flags;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- bcm_uart_writel(port, 0, UART_IR_REG);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- bcm_uart_disable(port);
- bcm_uart_flush(port);
-@@ -470,7 +470,7 @@ static void bcm_uart_set_termios(struct
- unsigned long flags;
- int tries;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /* Drain the hot tub fully before we power it off for the winter. */
- for (tries = 3; !bcm_uart_tx_empty(port) && tries; tries--)
-@@ -546,7 +546,7 @@ static void bcm_uart_set_termios(struct
-
- uart_update_timeout(port, new->c_cflag, baud);
- bcm_uart_enable(port);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- /*
-@@ -712,9 +712,9 @@ static void bcm_console_write(struct con
- /* bcm_uart_interrupt() already took the lock */
- locked = 0;
- } else if (oops_in_progress) {
-- locked = spin_trylock(&port->lock);
-+ locked = uart_port_trylock(port);
- } else {
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- locked = 1;
- }
-
-@@ -725,7 +725,7 @@ static void bcm_console_write(struct con
- wait_for_xmitr(port);
-
- if (locked)
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- local_irq_restore(flags);
- }
-