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-rw-r--r--debian/patches-rt/0056-serial-tegra-Use-port-lock-wrappers.patch176
1 files changed, 0 insertions, 176 deletions
diff --git a/debian/patches-rt/0056-serial-tegra-Use-port-lock-wrappers.patch b/debian/patches-rt/0056-serial-tegra-Use-port-lock-wrappers.patch
deleted file mode 100644
index f53b521dc0..0000000000
--- a/debian/patches-rt/0056-serial-tegra-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,176 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:44:13 +0206
-Subject: [PATCH 056/134] serial: tegra: 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/20230914183831.587273-57-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/serial-tegra.c | 32 ++++++++++++++++----------------
- 1 file changed, 16 insertions(+), 16 deletions(-)
-
---- a/drivers/tty/serial/serial-tegra.c
-+++ b/drivers/tty/serial/serial-tegra.c
-@@ -411,7 +411,7 @@ static int tegra_set_baudrate(struct teg
- divisor = DIV_ROUND_CLOSEST(rate, baud * 16);
- }
-
-- spin_lock_irqsave(&tup->uport.lock, flags);
-+ uart_port_lock_irqsave(&tup->uport, &flags);
- lcr = tup->lcr_shadow;
- lcr |= UART_LCR_DLAB;
- tegra_uart_write(tup, lcr, UART_LCR);
-@@ -424,7 +424,7 @@ static int tegra_set_baudrate(struct teg
-
- /* Dummy read to ensure the write is posted */
- tegra_uart_read(tup, UART_SCR);
-- spin_unlock_irqrestore(&tup->uport.lock, flags);
-+ uart_port_unlock_irqrestore(&tup->uport, flags);
-
- tup->current_baud = baud;
-
-@@ -522,13 +522,13 @@ static void tegra_uart_tx_dma_complete(v
- dmaengine_tx_status(tup->tx_dma_chan, tup->tx_cookie, &state);
- count = tup->tx_bytes_requested - state.residue;
- async_tx_ack(tup->tx_dma_desc);
-- spin_lock_irqsave(&tup->uport.lock, flags);
-+ uart_port_lock_irqsave(&tup->uport, &flags);
- uart_xmit_advance(&tup->uport, count);
- tup->tx_in_progress = 0;
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&tup->uport);
- tegra_uart_start_next_tx(tup);
-- spin_unlock_irqrestore(&tup->uport.lock, flags);
-+ uart_port_unlock_irqrestore(&tup->uport, flags);
- }
-
- static int tegra_uart_start_tx_dma(struct tegra_uart_port *tup,
-@@ -598,13 +598,13 @@ static unsigned int tegra_uart_tx_empty(
- unsigned int ret = 0;
- unsigned long flags;
-
-- spin_lock_irqsave(&u->lock, flags);
-+ uart_port_lock_irqsave(u, &flags);
- if (!tup->tx_in_progress) {
- unsigned long lsr = tegra_uart_read(tup, UART_LSR);
- if ((lsr & TX_EMPTY_STATUS) == TX_EMPTY_STATUS)
- ret = TIOCSER_TEMT;
- }
-- spin_unlock_irqrestore(&u->lock, flags);
-+ uart_port_unlock_irqrestore(u, flags);
- return ret;
- }
-
-@@ -727,7 +727,7 @@ static void tegra_uart_rx_dma_complete(v
- struct dma_tx_state state;
- enum dma_status status;
-
-- spin_lock_irqsave(&u->lock, flags);
-+ uart_port_lock_irqsave(u, &flags);
-
- status = dmaengine_tx_status(tup->rx_dma_chan, tup->rx_cookie, &state);
-
-@@ -749,7 +749,7 @@ static void tegra_uart_rx_dma_complete(v
- set_rts(tup, true);
-
- done:
-- spin_unlock_irqrestore(&u->lock, flags);
-+ uart_port_unlock_irqrestore(u, flags);
- }
-
- static void tegra_uart_terminate_rx_dma(struct tegra_uart_port *tup)
-@@ -836,7 +836,7 @@ static irqreturn_t tegra_uart_isr(int ir
- bool is_rx_int = false;
- unsigned long flags;
-
-- spin_lock_irqsave(&u->lock, flags);
-+ uart_port_lock_irqsave(u, &flags);
- while (1) {
- iir = tegra_uart_read(tup, UART_IIR);
- if (iir & UART_IIR_NO_INT) {
-@@ -852,7 +852,7 @@ static irqreturn_t tegra_uart_isr(int ir
- } else if (is_rx_start) {
- tegra_uart_start_rx_dma(tup);
- }
-- spin_unlock_irqrestore(&u->lock, flags);
-+ uart_port_unlock_irqrestore(u, flags);
- return IRQ_HANDLED;
- }
-
-@@ -969,11 +969,11 @@ static void tegra_uart_hw_deinit(struct
- }
- }
-
-- spin_lock_irqsave(&tup->uport.lock, flags);
-+ uart_port_lock_irqsave(&tup->uport, &flags);
- /* Reset the Rx and Tx FIFOs */
- tegra_uart_fifo_reset(tup, UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR);
- tup->current_baud = 0;
-- spin_unlock_irqrestore(&tup->uport.lock, flags);
-+ uart_port_unlock_irqrestore(&tup->uport, flags);
-
- tup->rx_in_progress = 0;
- tup->tx_in_progress = 0;
-@@ -1292,7 +1292,7 @@ static void tegra_uart_set_termios(struc
- int ret;
-
- max_divider *= 16;
-- spin_lock_irqsave(&u->lock, flags);
-+ uart_port_lock_irqsave(u, &flags);
-
- /* Changing configuration, it is safe to stop any rx now */
- if (tup->rts_active)
-@@ -1341,7 +1341,7 @@ static void tegra_uart_set_termios(struc
- baud = uart_get_baud_rate(u, termios, oldtermios,
- parent_clk_rate/max_divider,
- parent_clk_rate/16);
-- spin_unlock_irqrestore(&u->lock, flags);
-+ uart_port_unlock_irqrestore(u, flags);
- ret = tegra_set_baudrate(tup, baud);
- if (ret < 0) {
- dev_err(tup->uport.dev, "Failed to set baud rate\n");
-@@ -1349,7 +1349,7 @@ static void tegra_uart_set_termios(struc
- }
- if (tty_termios_baud_rate(termios))
- tty_termios_encode_baud_rate(termios, baud, baud);
-- spin_lock_irqsave(&u->lock, flags);
-+ uart_port_lock_irqsave(u, &flags);
-
- /* Flow control */
- if (termios->c_cflag & CRTSCTS) {
-@@ -1382,7 +1382,7 @@ static void tegra_uart_set_termios(struc
- if (termios->c_iflag & IGNBRK)
- tup->uport.ignore_status_mask |= UART_LSR_BI;
-
-- spin_unlock_irqrestore(&u->lock, flags);
-+ uart_port_unlock_irqrestore(u, flags);
- }
-
- static const char *tegra_uart_type(struct uart_port *u)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 21:13:08 +0000