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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-01-15 18:18:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-18 11:23:00 +0100 |
| commit | b30fd1a6f6f2920e037fc659a015d0b76c604931 (patch) | |
| tree | d1affb45e6b91c53223df70cf463ec8c14260abb /drivers/tty/serial/lpc32xx_hs.c | |
| parent | serial: 8250_omap: Use clk_get_rate() to obtain fclk frequency (diff) | |
| download | linux-b30fd1a6f6f2920e037fc659a015d0b76c604931.tar.xz linux-b30fd1a6f6f2920e037fc659a015d0b76c604931.zip | |
tty: serial: lpc32xx_hs: fix missing console boot messages
When probing the HSUART, it is put in loopback mode in order to prevent a
potential issue that may happen on RX (Errata HSUART.1).
serial_lpc32xx_startup() moves it out of loopback mode but this is too late
to get the kernel boot messages before userspace opens the device.
Also get out of loopback mode in lpc32xx_hsuart_console_setup().
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/lpc32xx_hs.c')
| -rw-r--r-- | drivers/tty/serial/lpc32xx_hs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c index d1d73261575b..f4e27d0ad947 100644 --- a/drivers/tty/serial/lpc32xx_hs.c +++ b/drivers/tty/serial/lpc32xx_hs.c @@ -151,6 +151,8 @@ static void lpc32xx_hsuart_console_write(struct console *co, const char *s, local_irq_restore(flags); } +static void lpc32xx_loopback_set(resource_size_t mapbase, int state); + static int __init lpc32xx_hsuart_console_setup(struct console *co, char *options) { @@ -170,6 +172,8 @@ static int __init lpc32xx_hsuart_console_setup(struct console *co, if (options) uart_parse_options(options, &baud, &parity, &bits, &flow); + lpc32xx_loopback_set(port->mapbase, 0); /* get out of loopback mode */ + return uart_set_options(port, co, baud, parity, bits, flow); } |