diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-05 14:08:24 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-05 14:08:24 -0700 |
commit | c932ed0adb09a7fa6d6649ee04dd78c83ab07ada (patch) | |
tree | 02b055bd7b350e7aca9104a9c69330896bb6382b /drivers/tty/serial/serial_core.c | |
parent | a16d8644bad461bb073b92e812080ea6715ddf2b (diff) | |
parent | 15279ebe99d7c6142d9f1a6ae4ded66c0f168678 (diff) | |
download | linux-stable-c932ed0adb09a7fa6d6649ee04dd78c83ab07ada.tar.gz linux-stable-c932ed0adb09a7fa6d6649ee04dd78c83ab07ada.tar.bz2 linux-stable-c932ed0adb09a7fa6d6649ee04dd78c83ab07ada.zip |
Merge tag 'tty-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is the big set of tty and serial driver patches for 5.14-rc1.
A bit more than normal, but nothing major, lots of cleanups.
Highlights are:
- lots of tty api cleanups and mxser driver cleanups from Jiri
- build warning fixes
- various serial driver updates
- coding style cleanups
- various tty driver minor fixes and updates
- removal of broken and disable r3964 line discipline (finally!)
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (227 commits)
serial: mvebu-uart: remove unused member nb from struct mvebu_uart
arm64: dts: marvell: armada-37xx: Fix reg for standard variant of UART
dt-bindings: mvebu-uart: fix documentation
serial: mvebu-uart: correctly calculate minimal possible baudrate
serial: mvebu-uart: do not allow changing baudrate when uartclk is not available
serial: mvebu-uart: fix calculation of clock divisor
tty: make linux/tty_flip.h self-contained
serial: Prefer unsigned int to bare use of unsigned
serial: 8250: 8250_omap: Fix possible interrupt storm on K3 SoCs
serial: qcom_geni_serial: use DT aliases according to DT bindings
Revert "tty: serial: Add UART driver for Cortina-Access platform"
tty: serial: Add UART driver for Cortina-Access platform
MAINTAINERS: add me back as mxser maintainer
mxser: Documentation, fix typos
mxser: Documentation, make the docs up-to-date
mxser: Documentation, remove traces of callout device
mxser: introduce mxser_16550A_or_MUST helper
mxser: rename flags to old_speed in mxser_set_serial_info
mxser: use port variable in mxser_set_serial_info
mxser: access info->MCR under info->slock
...
Diffstat (limited to 'drivers/tty/serial/serial_core.c')
-rw-r--r-- | drivers/tty/serial/serial_core.c | 58 |
1 files changed, 18 insertions, 40 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 18ff85a83f80..69092deba11f 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -184,8 +184,8 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state, int init_hw) { struct uart_port *uport = uart_port_check(state); + unsigned long flags; unsigned long page; - unsigned long flags = 0; int retval = 0; if (uport->type == PORT_UNKNOWN) @@ -275,7 +275,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state) { struct uart_port *uport = uart_port_check(state); struct tty_port *port = &state->port; - unsigned long flags = 0; + unsigned long flags; char *xmit_buf = NULL; /* @@ -334,39 +334,15 @@ void uart_update_timeout(struct uart_port *port, unsigned int cflag, unsigned int baud) { - unsigned int bits; + unsigned int size; - /* byte size and parity */ - switch (cflag & CSIZE) { - case CS5: - bits = 7; - break; - case CS6: - bits = 8; - break; - case CS7: - bits = 9; - break; - default: - bits = 10; - break; /* CS8 */ - } - - if (cflag & CSTOPB) - bits++; - if (cflag & PARENB) - bits++; - - /* - * The total number of bits to be transmitted in the fifo. - */ - bits = bits * port->fifosize; + size = tty_get_frame_size(cflag) * port->fifosize; /* * Figure the timeout to send the above number of bits. * Add .02 seconds of slop */ - port->timeout = (HZ * bits) / baud + HZ/50; + port->timeout = (HZ * size) / baud + HZ/50; } EXPORT_SYMBOL(uart_update_timeout); @@ -616,12 +592,12 @@ static int uart_write(struct tty_struct *tty, return ret; } -static int uart_write_room(struct tty_struct *tty) +static unsigned int uart_write_room(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; struct uart_port *port; unsigned long flags; - int ret; + unsigned int ret; port = uart_port_lock(state, flags); ret = uart_circ_chars_free(&state->xmit); @@ -629,12 +605,12 @@ static int uart_write_room(struct tty_struct *tty) return ret; } -static int uart_chars_in_buffer(struct tty_struct *tty) +static unsigned int uart_chars_in_buffer(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; struct uart_port *port; unsigned long flags; - int ret; + unsigned int ret; port = uart_port_lock(state, flags); ret = uart_circ_chars_pending(&state->xmit); @@ -3029,26 +3005,28 @@ out: /* * Are the two ports equivalent? */ -int uart_match_port(struct uart_port *port1, struct uart_port *port2) +bool uart_match_port(const struct uart_port *port1, + const struct uart_port *port2) { if (port1->iotype != port2->iotype) - return 0; + return false; switch (port1->iotype) { case UPIO_PORT: - return (port1->iobase == port2->iobase); + return port1->iobase == port2->iobase; case UPIO_HUB6: - return (port1->iobase == port2->iobase) && - (port1->hub6 == port2->hub6); + return port1->iobase == port2->iobase && + port1->hub6 == port2->hub6; case UPIO_MEM: case UPIO_MEM16: case UPIO_MEM32: case UPIO_MEM32BE: case UPIO_AU: case UPIO_TSI: - return (port1->mapbase == port2->mapbase); + return port1->mapbase == port2->mapbase; } - return 0; + + return false; } EXPORT_SYMBOL(uart_match_port); |