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-rw-r--r--debian/patches-rt/0041-serial-msm-Use-port-lock-wrappers.patch185
1 files changed, 0 insertions, 185 deletions
diff --git a/debian/patches-rt/0041-serial-msm-Use-port-lock-wrappers.patch b/debian/patches-rt/0041-serial-msm-Use-port-lock-wrappers.patch
deleted file mode 100644
index 89b845330..000000000
--- a/debian/patches-rt/0041-serial-msm-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,185 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:58 +0206
-Subject: [PATCH 041/134] serial: msm: 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: Bjorn Andersson <quic_bjorande@quicinc.com>
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20230914183831.587273-42-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/msm_serial.c | 38 +++++++++++++++++++-------------------
- 1 file changed, 19 insertions(+), 19 deletions(-)
-
---- a/drivers/tty/serial/msm_serial.c
-+++ b/drivers/tty/serial/msm_serial.c
-@@ -444,7 +444,7 @@ static void msm_complete_tx_dma(void *ar
- unsigned int count;
- u32 val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /* Already stopped */
- if (!dma->count)
-@@ -476,7 +476,7 @@ static void msm_complete_tx_dma(void *ar
-
- msm_handle_tx(port);
- done:
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static int msm_handle_tx_dma(struct msm_port *msm_port, unsigned int count)
-@@ -549,7 +549,7 @@ static void msm_complete_rx_dma(void *ar
- unsigned long flags;
- u32 val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /* Already stopped */
- if (!dma->count)
-@@ -587,16 +587,16 @@ static void msm_complete_rx_dma(void *ar
- if (!(port->read_status_mask & MSM_UART_SR_RX_BREAK))
- flag = TTY_NORMAL;
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- sysrq = uart_handle_sysrq_char(port, dma->virt[i]);
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- if (!sysrq)
- tty_insert_flip_char(tport, dma->virt[i], flag);
- }
-
- msm_start_rx_dma(msm_port);
- done:
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- if (count)
- tty_flip_buffer_push(tport);
-@@ -762,9 +762,9 @@ static void msm_handle_rx_dm(struct uart
- if (!(port->read_status_mask & MSM_UART_SR_RX_BREAK))
- flag = TTY_NORMAL;
-
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- sysrq = uart_handle_sysrq_char(port, buf[i]);
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- if (!sysrq)
- tty_insert_flip_char(tport, buf[i], flag);
- }
-@@ -824,9 +824,9 @@ static void msm_handle_rx(struct uart_po
- else if (sr & MSM_UART_SR_PAR_FRAME_ERR)
- flag = TTY_FRAME;
-
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- sysrq = uart_handle_sysrq_char(port, c);
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- if (!sysrq)
- tty_insert_flip_char(tport, c, flag);
- }
-@@ -951,7 +951,7 @@ static irqreturn_t msm_uart_irq(int irq,
- unsigned int misr;
- u32 val;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- misr = msm_read(port, MSM_UART_MISR);
- msm_write(port, 0, MSM_UART_IMR); /* disable interrupt */
-
-@@ -983,7 +983,7 @@ static irqreturn_t msm_uart_irq(int irq,
- msm_handle_delta_cts(port);
-
- msm_write(port, msm_port->imr, MSM_UART_IMR); /* restore interrupt */
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return IRQ_HANDLED;
- }
-@@ -1128,13 +1128,13 @@ static int msm_set_baud_rate(struct uart
- unsigned long flags, rate;
-
- flags = *saved_flags;
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- entry = msm_find_best_baud(port, baud, &rate);
- clk_set_rate(msm_port->clk, rate);
- baud = rate / 16 / entry->divisor;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- *saved_flags = flags;
- port->uartclk = rate;
-
-@@ -1266,7 +1266,7 @@ static void msm_set_termios(struct uart_
- unsigned long flags;
- unsigned int baud, mr;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- if (dma->chan) /* Terminate if any */
- msm_stop_dma(port, dma);
-@@ -1338,7 +1338,7 @@ static void msm_set_termios(struct uart_
- /* Try to use DMA */
- msm_start_rx_dma(msm_port);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static const char *msm_type(struct uart_port *port)
-@@ -1620,9 +1620,9 @@ static void __msm_console_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);
-
- if (is_uartdm)
- msm_reset_dm_count(port, count);
-@@ -1661,7 +1661,7 @@ static void __msm_console_write(struct u
- }
-
- 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 2024-06-10 00:27:50 +0000