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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:40:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:44:43 +0000
commitb5b67adcc17e3e74dbcda09ff3f8a4636aa53486 (patch)
tree601c346183757b42c53b1d0aa8773cb00d1bd73c /debian/patches-rt/0029-serial-imx-Use-port-lock-wrappers.patch
parentMerging upstream version 6.7.7. (diff)
downloadlinux-b5b67adcc17e3e74dbcda09ff3f8a4636aa53486.tar.xz
linux-b5b67adcc17e3e74dbcda09ff3f8a4636aa53486.zip
Merging debian version 6.7.7-1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--debian/patches-rt/0029-serial-imx-Use-port-lock-wrappers.patch354
1 files changed, 0 insertions, 354 deletions
diff --git a/debian/patches-rt/0029-serial-imx-Use-port-lock-wrappers.patch b/debian/patches-rt/0029-serial-imx-Use-port-lock-wrappers.patch
deleted file mode 100644
index 24f582ae87..0000000000
--- a/debian/patches-rt/0029-serial-imx-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,354 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:46 +0206
-Subject: [PATCH 029/134] serial: imx: 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/20230914183831.587273-30-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/imx.c | 84 +++++++++++++++++++++++------------------------
- 1 file changed, 42 insertions(+), 42 deletions(-)
-
---- a/drivers/tty/serial/imx.c
-+++ b/drivers/tty/serial/imx.c
-@@ -575,7 +575,7 @@ static void imx_uart_dma_tx_callback(voi
- unsigned long flags;
- u32 ucr1;
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- dma_unmap_sg(sport->port.dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE);
-
-@@ -600,7 +600,7 @@ static void imx_uart_dma_tx_callback(voi
- imx_uart_writel(sport, ucr4, UCR4);
- }
-
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- }
-
- /* called with port.lock taken and irqs off */
-@@ -766,11 +766,11 @@ static irqreturn_t imx_uart_rtsint(int i
- struct imx_port *sport = dev_id;
- irqreturn_t ret;
-
-- spin_lock(&sport->port.lock);
-+ uart_port_lock(&sport->port);
-
- ret = __imx_uart_rtsint(irq, dev_id);
-
-- spin_unlock(&sport->port.lock);
-+ uart_port_unlock(&sport->port);
-
- return ret;
- }
-@@ -779,9 +779,9 @@ static irqreturn_t imx_uart_txint(int ir
- {
- struct imx_port *sport = dev_id;
-
-- spin_lock(&sport->port.lock);
-+ uart_port_lock(&sport->port);
- imx_uart_transmit_buffer(sport);
-- spin_unlock(&sport->port.lock);
-+ uart_port_unlock(&sport->port);
- return IRQ_HANDLED;
- }
-
-@@ -895,11 +895,11 @@ static irqreturn_t imx_uart_rxint(int ir
- struct imx_port *sport = dev_id;
- irqreturn_t ret;
-
-- spin_lock(&sport->port.lock);
-+ uart_port_lock(&sport->port);
-
- ret = __imx_uart_rxint(irq, dev_id);
-
-- spin_unlock(&sport->port.lock);
-+ uart_port_unlock(&sport->port);
-
- return ret;
- }
-@@ -962,7 +962,7 @@ static irqreturn_t imx_uart_int(int irq,
- unsigned int usr1, usr2, ucr1, ucr2, ucr3, ucr4;
- irqreturn_t ret = IRQ_NONE;
-
-- spin_lock(&sport->port.lock);
-+ uart_port_lock(&sport->port);
-
- usr1 = imx_uart_readl(sport, USR1);
- usr2 = imx_uart_readl(sport, USR2);
-@@ -1032,7 +1032,7 @@ static irqreturn_t imx_uart_int(int irq,
- ret = IRQ_HANDLED;
- }
-
-- spin_unlock(&sport->port.lock);
-+ uart_port_unlock(&sport->port);
-
- return ret;
- }
-@@ -1115,7 +1115,7 @@ static void imx_uart_break_ctl(struct ua
- unsigned long flags;
- u32 ucr1;
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- ucr1 = imx_uart_readl(sport, UCR1) & ~UCR1_SNDBRK;
-
-@@ -1124,7 +1124,7 @@ static void imx_uart_break_ctl(struct ua
-
- imx_uart_writel(sport, ucr1, UCR1);
-
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- }
-
- /*
-@@ -1137,9 +1137,9 @@ static void imx_uart_timeout(struct time
- unsigned long flags;
-
- if (sport->port.state) {
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- imx_uart_mctrl_check(sport);
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- mod_timer(&sport->timer, jiffies + MCTRL_TIMEOUT);
- }
-@@ -1169,9 +1169,9 @@ static void imx_uart_dma_rx_callback(voi
- status = dmaengine_tx_status(chan, sport->rx_cookie, &state);
-
- if (status == DMA_ERROR) {
-- spin_lock(&sport->port.lock);
-+ uart_port_lock(&sport->port);
- imx_uart_clear_rx_errors(sport);
-- spin_unlock(&sport->port.lock);
-+ uart_port_unlock(&sport->port);
- return;
- }
-
-@@ -1200,9 +1200,9 @@ static void imx_uart_dma_rx_callback(voi
- r_bytes = rx_ring->head - rx_ring->tail;
-
- /* If we received something, check for 0xff flood */
-- spin_lock(&sport->port.lock);
-+ uart_port_lock(&sport->port);
- imx_uart_check_flood(sport, imx_uart_readl(sport, USR2));
-- spin_unlock(&sport->port.lock);
-+ uart_port_unlock(&sport->port);
-
- if (!(sport->port.ignore_status_mask & URXD_DUMMY_READ)) {
-
-@@ -1460,7 +1460,7 @@ static int imx_uart_startup(struct uart_
- if (!uart_console(port) && imx_uart_dma_init(sport) == 0)
- dma_is_inited = 1;
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- /* Reset fifo's and state machines */
- imx_uart_soft_reset(sport);
-@@ -1533,7 +1533,7 @@ static int imx_uart_startup(struct uart_
-
- imx_uart_disable_loopback_rs485(sport);
-
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- return 0;
- }
-@@ -1558,21 +1558,21 @@ static void imx_uart_shutdown(struct uar
- sport->dma_is_rxing = 0;
- }
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- imx_uart_stop_tx(port);
- imx_uart_stop_rx(port);
- imx_uart_disable_dma(sport);
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- imx_uart_dma_exit(sport);
- }
-
- mctrl_gpio_disable_ms(sport->gpios);
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- ucr2 = imx_uart_readl(sport, UCR2);
- ucr2 &= ~(UCR2_TXEN | UCR2_ATEN);
- imx_uart_writel(sport, ucr2, UCR2);
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- /*
- * Stop our timer.
-@@ -1583,7 +1583,7 @@ static void imx_uart_shutdown(struct uar
- * Disable all interrupts, port and break condition.
- */
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- ucr1 = imx_uart_readl(sport, UCR1);
- ucr1 &= ~(UCR1_TRDYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_RXDMAEN |
-@@ -1605,7 +1605,7 @@ static void imx_uart_shutdown(struct uar
- ucr4 &= ~UCR4_TCEN;
- imx_uart_writel(sport, ucr4, UCR4);
-
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- clk_disable_unprepare(sport->clk_per);
- clk_disable_unprepare(sport->clk_ipg);
-@@ -1668,7 +1668,7 @@ imx_uart_set_termios(struct uart_port *p
- baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 16);
- quot = uart_get_divisor(port, baud);
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- /*
- * Read current UCR2 and save it for future use, then clear all the bits
-@@ -1796,7 +1796,7 @@ imx_uart_set_termios(struct uart_port *p
- if (UART_ENABLE_MS(&sport->port, termios->c_cflag))
- imx_uart_enable_ms(&sport->port);
-
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- }
-
- static const char *imx_uart_type(struct uart_port *port)
-@@ -1858,7 +1858,7 @@ static int imx_uart_poll_init(struct uar
-
- imx_uart_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT);
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- /*
- * Be careful about the order of enabling bits here. First enable the
-@@ -1886,7 +1886,7 @@ static int imx_uart_poll_init(struct uar
- imx_uart_writel(sport, ucr1 | UCR1_RRDYEN, UCR1);
- imx_uart_writel(sport, ucr2 | UCR2_ATEN, UCR2);
-
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- return 0;
- }
-@@ -2005,9 +2005,9 @@ imx_uart_console_write(struct console *c
- if (sport->port.sysrq)
- locked = 0;
- else if (oops_in_progress)
-- locked = spin_trylock_irqsave(&sport->port.lock, flags);
-+ locked = uart_port_trylock_irqsave(&sport->port, &flags);
- else
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
-
- /*
- * First, save UCR1/2/3 and then disable interrupts
-@@ -2035,7 +2035,7 @@ imx_uart_console_write(struct console *c
- imx_uart_ucrs_restore(sport, &old_ucr);
-
- if (locked)
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- }
-
- /*
-@@ -2193,10 +2193,10 @@ static enum hrtimer_restart imx_trigger_
- struct imx_port *sport = container_of(t, struct imx_port, trigger_start_tx);
- unsigned long flags;
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- if (sport->tx_state == WAIT_AFTER_RTS)
- imx_uart_start_tx(&sport->port);
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- return HRTIMER_NORESTART;
- }
-@@ -2206,10 +2206,10 @@ static enum hrtimer_restart imx_trigger_
- struct imx_port *sport = container_of(t, struct imx_port, trigger_stop_tx);
- unsigned long flags;
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- if (sport->tx_state == WAIT_AFTER_SEND)
- imx_uart_stop_tx(&sport->port);
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
-
- return HRTIMER_NORESTART;
- }
-@@ -2482,9 +2482,9 @@ static void imx_uart_restore_context(str
- {
- unsigned long flags;
-
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- if (!sport->context_saved) {
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- return;
- }
-
-@@ -2499,7 +2499,7 @@ static void imx_uart_restore_context(str
- imx_uart_writel(sport, sport->saved_reg[2], UCR3);
- imx_uart_writel(sport, sport->saved_reg[3], UCR4);
- sport->context_saved = false;
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- }
-
- static void imx_uart_save_context(struct imx_port *sport)
-@@ -2507,7 +2507,7 @@ static void imx_uart_save_context(struct
- unsigned long flags;
-
- /* Save necessary regs */
-- spin_lock_irqsave(&sport->port.lock, flags);
-+ uart_port_lock_irqsave(&sport->port, &flags);
- sport->saved_reg[0] = imx_uart_readl(sport, UCR1);
- sport->saved_reg[1] = imx_uart_readl(sport, UCR2);
- sport->saved_reg[2] = imx_uart_readl(sport, UCR3);
-@@ -2519,7 +2519,7 @@ static void imx_uart_save_context(struct
- sport->saved_reg[8] = imx_uart_readl(sport, UBMR);
- sport->saved_reg[9] = imx_uart_readl(sport, IMX21_UTS);
- sport->context_saved = true;
-- spin_unlock_irqrestore(&sport->port.lock, flags);
-+ uart_port_unlock_irqrestore(&sport->port, flags);
- }
-
- static void imx_uart_enable_wakeup(struct imx_port *sport, bool on)