diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-21 12:44:10 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-21 12:44:10 -0700 |
commit | 3bcb0bf65c2b8d67dbe7509da8d1461ee4445db7 (patch) | |
tree | ed0506aa0429318deacaf08cbec74ccf66a441c3 /drivers/tty/serial/amba-pl011.c | |
parent | e09bf86f3d53ecf4da61163d88036c4c16419d70 (diff) | |
parent | d6c0d892b44cd16e0421909cf7f2883b9e625e4a (diff) |
Merge tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial driver updates from Greg KH:
"Here is the big set of TTY/Serial driver updates and cleanups for
6.9-rc1. Included in here are:
- more tty cleanups from Jiri
- loads of 8250 driver cleanups from Andy
- max310x driver updates
- samsung serial driver updates
- uart_prepare_sysrq_char() updates for many drivers
- platform driver remove callback void cleanups
- stm32 driver updates
- other small tty/serial driver updates
All of these have been in linux-next for a long time with no reported
issues"
* tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (199 commits)
dt-bindings: serial: stm32: add power-domains property
serial: 8250_dw: Replace ACPI device check by a quirk
serial: Lock console when calling into driver before registration
serial: 8250_uniphier: Switch to use uart_read_port_properties()
serial: 8250_tegra: Switch to use uart_read_port_properties()
serial: 8250_pxa: Switch to use uart_read_port_properties()
serial: 8250_omap: Switch to use uart_read_port_properties()
serial: 8250_of: Switch to use uart_read_port_properties()
serial: 8250_lpc18xx: Switch to use uart_read_port_properties()
serial: 8250_ingenic: Switch to use uart_read_port_properties()
serial: 8250_dw: Switch to use uart_read_port_properties()
serial: 8250_bcm7271: Switch to use uart_read_port_properties()
serial: 8250_bcm2835aux: Switch to use uart_read_port_properties()
serial: 8250_aspeed_vuart: Switch to use uart_read_port_properties()
serial: port: Introduce a common helper to read properties
serial: core: Add UPIO_UNKNOWN constant for unknown port type
serial: core: Move struct uart_port::quirks closer to possible values
serial: sh-sci: Call sci_serial_{in,out}() directly
serial: core: only stop transmit when HW fifo is empty
serial: pch: Use uart_prepare_sysrq_char().
...
Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
-rw-r--r-- | drivers/tty/serial/amba-pl011.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index cf2c890a560f..2fa3fb30dc6c 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -348,10 +348,7 @@ static int pl011_fifo_to_tty(struct uart_amba_port *uap) flag = TTY_FRAME; } - uart_port_unlock(&uap->port); - sysrq = uart_handle_sysrq_char(&uap->port, ch & 255); - uart_port_lock(&uap->port); - + sysrq = uart_prepare_sysrq_char(&uap->port, ch & 255); if (!sysrq) uart_insert_char(&uap->port, ch, UART011_DR_OE, ch, flag); } @@ -1017,7 +1014,7 @@ static void pl011_dma_rx_callback(void *data) ret = pl011_dma_rx_trigger_dma(uap); pl011_dma_rx_chars(uap, pending, lastbuf, false); - uart_port_unlock_irq(&uap->port); + uart_unlock_and_check_sysrq(&uap->port); /* * Do this check after we picked the DMA chars so we don't * get some IRQ immediately from RX. @@ -1540,11 +1537,10 @@ static void check_apply_cts_event_workaround(struct uart_amba_port *uap) static irqreturn_t pl011_int(int irq, void *dev_id) { struct uart_amba_port *uap = dev_id; - unsigned long flags; unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT; int handled = 0; - uart_port_lock_irqsave(&uap->port, &flags); + uart_port_lock(&uap->port); status = pl011_read(uap, REG_RIS) & uap->im; if (status) { do { @@ -1573,7 +1569,7 @@ static irqreturn_t pl011_int(int irq, void *dev_id) handled = 1; } - uart_port_unlock_irqrestore(&uap->port, flags); + uart_unlock_and_check_sysrq(&uap->port); return IRQ_RETVAL(handled); } @@ -2322,13 +2318,10 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) clk_enable(uap->clk); - local_irq_save(flags); - if (uap->port.sysrq) - locked = 0; - else if (oops_in_progress) - locked = uart_port_trylock(&uap->port); + if (oops_in_progress) + locked = uart_port_trylock_irqsave(&uap->port, &flags); else - uart_port_lock(&uap->port); + uart_port_lock_irqsave(&uap->port, &flags); /* * First save the CR then disable the interrupts @@ -2354,8 +2347,7 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) pl011_write(old_cr, uap, REG_CR); if (locked) - uart_port_unlock(&uap->port); - local_irq_restore(flags); + uart_port_unlock_irqrestore(&uap->port, flags); clk_disable(uap->clk); } |