diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2023-09-11 17:43:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-18 11:14:42 +0200 |
| commit | 2ff477b78250186e611e008320e1de20107e9617 (patch) | |
| tree | c02aef108be20fcfe3b61b75b1d163517229127d /drivers/tty/serial/8250/8250_port.c | |
| parent | d81ffb87aaa75f842cd7aa57091810353755b3e6 (diff) | |
| download | linux-stable-2ff477b78250186e611e008320e1de20107e9617.tar.gz linux-stable-2ff477b78250186e611e008320e1de20107e9617.tar.bz2 linux-stable-2ff477b78250186e611e008320e1de20107e9617.zip | |
serial: 8250_port: Introduce UART_IIR_FIFO_ENABLED_16750
The UART_IIR_64BYTE_FIFO is always being used in conjunction with
UART_IIR_FIFO_ENABLED. Introduce a joined UART_IIR_FIFO_ENABLED_16750
definition and use it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230911144308.4169752-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250/8250_port.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index fb891b67968f..a064698c2be0 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1008,12 +1008,11 @@ static void autoconfig_16550a(struct uart_8250_port *up) serial_out(up, UART_LCR, 0); serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); - status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | - UART_IIR_FIFO_ENABLED); + status1 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750; serial_out(up, UART_FCR, 0); serial_out(up, UART_LCR, 0); - if (status1 == (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED)) + if (status1 == UART_IIR_FIFO_ENABLED_16750) up->port.type = PORT_16550A_FSL64; else DEBUG_AUTOCONF("Motorola 8xxx DUART "); @@ -1081,12 +1080,12 @@ static void autoconfig_16550a(struct uart_8250_port *up) */ serial_out(up, UART_LCR, 0); serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); - status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED); + status1 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750; serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); - status2 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED); + status2 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750; serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); serial_out(up, UART_LCR, 0); @@ -1094,7 +1093,7 @@ static void autoconfig_16550a(struct uart_8250_port *up) DEBUG_AUTOCONF("iir1=%d iir2=%d ", status1, status2); if (status1 == UART_IIR_FIFO_ENABLED_16550A && - status2 == (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED_16550A)) { + status2 == UART_IIR_FIFO_ENABLED_16750) { up->port.type = PORT_16750; up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP; return; |