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-rw-r--r--debian/patches-rt/0050-serial-rda-Use-port-lock-wrappers.patch177
1 files changed, 0 insertions, 177 deletions
diff --git a/debian/patches-rt/0050-serial-rda-Use-port-lock-wrappers.patch b/debian/patches-rt/0050-serial-rda-Use-port-lock-wrappers.patch
deleted file mode 100644
index 6d51972bcd..0000000000
--- a/debian/patches-rt/0050-serial-rda-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,177 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:44:07 +0206
-Subject: [PATCH 050/134] serial: rda: 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/20230914183831.587273-51-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/rda-uart.c | 34 +++++++++++++++++-----------------
- 1 file changed, 17 insertions(+), 17 deletions(-)
-
---- a/drivers/tty/serial/rda-uart.c
-+++ b/drivers/tty/serial/rda-uart.c
-@@ -139,12 +139,12 @@ static unsigned int rda_uart_tx_empty(st
- unsigned int ret;
- u32 val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- val = rda_uart_read(port, RDA_UART_STATUS);
- ret = (val & RDA_UART_TX_FIFO_MASK) ? TIOCSER_TEMT : 0;
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return ret;
- }
-@@ -246,7 +246,7 @@ static void rda_uart_set_termios(struct
- unsigned int baud;
- u32 irq_mask;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- baud = uart_get_baud_rate(port, termios, old, 9600, port->uartclk / 4);
- rda_uart_change_baudrate(rda_port, baud);
-@@ -325,7 +325,7 @@ static void rda_uart_set_termios(struct
- /* update the per-port timeout */
- uart_update_timeout(port, termios->c_cflag, baud);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void rda_uart_send_chars(struct uart_port *port)
-@@ -408,7 +408,7 @@ static irqreturn_t rda_interrupt(int irq
- unsigned long flags;
- u32 val, irq_mask;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /* Clear IRQ cause */
- val = rda_uart_read(port, RDA_UART_IRQ_CAUSE);
-@@ -425,7 +425,7 @@ static irqreturn_t rda_interrupt(int irq
- rda_uart_send_chars(port);
- }
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return IRQ_HANDLED;
- }
-@@ -436,16 +436,16 @@ static int rda_uart_startup(struct uart_
- int ret;
- u32 val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- rda_uart_write(port, 0, RDA_UART_IRQ_MASK);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- ret = request_irq(port->irq, rda_interrupt, IRQF_NO_SUSPEND,
- "rda-uart", port);
- if (ret)
- return ret;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- val = rda_uart_read(port, RDA_UART_CTRL);
- val |= RDA_UART_ENABLE;
-@@ -456,7 +456,7 @@ static int rda_uart_startup(struct uart_
- val |= (RDA_UART_RX_DATA_AVAILABLE | RDA_UART_RX_TIMEOUT);
- rda_uart_write(port, val, RDA_UART_IRQ_MASK);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return 0;
- }
-@@ -466,7 +466,7 @@ static void rda_uart_shutdown(struct uar
- unsigned long flags;
- u32 val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- rda_uart_stop_tx(port);
- rda_uart_stop_rx(port);
-@@ -475,7 +475,7 @@ static void rda_uart_shutdown(struct uar
- val &= ~RDA_UART_ENABLE;
- rda_uart_write(port, val, RDA_UART_CTRL);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static const char *rda_uart_type(struct uart_port *port)
-@@ -515,7 +515,7 @@ static void rda_uart_config_port(struct
- rda_uart_request_port(port);
- }
-
-- spin_lock_irqsave(&port->lock, irq_flags);
-+ uart_port_lock_irqsave(port, &irq_flags);
-
- /* Clear mask, so no surprise interrupts. */
- rda_uart_write(port, 0, RDA_UART_IRQ_MASK);
-@@ -523,7 +523,7 @@ static void rda_uart_config_port(struct
- /* Clear status register */
- rda_uart_write(port, 0, RDA_UART_STATUS);
-
-- spin_unlock_irqrestore(&port->lock, irq_flags);
-+ uart_port_unlock_irqrestore(port, irq_flags);
- }
-
- static void rda_uart_release_port(struct uart_port *port)
-@@ -597,9 +597,9 @@ static void rda_uart_port_write(struct u
- if (port->sysrq) {
- 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;
- }
-
-@@ -615,7 +615,7 @@ static void rda_uart_port_write(struct u
- rda_uart_write(port, old_irq_mask, RDA_UART_IRQ_MASK);
-
- if (locked)
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- local_irq_restore(flags);
- }
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 11:23:36 +0000