OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

serial: 8250_dw: only setup the port from one place 

This adds a flag "skip_autocfg" that the platforms that do
not have the ADDITIONAL_FEATURES implemented can use to skip
the port setup. It's then enough to call dw8250_setup_port
just from dw8250_probe based on that flag.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2015-09-21 14:17:27 +03:00 committed by Greg Kroah-Hartman
parent 2559318caa
commit 4f042054fa
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/tty/serial/8250/8250_dw.c
View File

@ -63,6 +63,8 @@ struct dw8250_data {
struct clk *pclk;
struct reset_control *rst;
struct uart_8250_dma dma;
unsigned int skip_autocfg:1;
};
#define BYT_PRV_CLK 0x800
@ -285,8 +287,6 @@ static int dw8250_probe_of(struct uart_port *p,
struct dw8250_data *data)
{
struct device_node *np = p->dev->of_node;
struct uart_8250_port *up = up_to_u8250p(p);
bool has_ucv = true;
int id;
#ifdef CONFIG_64BIT
@ -296,12 +296,9 @@ static int dw8250_probe_of(struct uart_port *p,
p->flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_FIXED_TYPE;
p->type = PORT_OCTEON;
data->usr_reg = 0x27;
has_ucv = false;
data->skip_autocfg = true;
}
#endif
if (has_ucv)
dw8250_setup_port(up);
/* get index of serial line, if found in DT aliases */
id = of_alias_get_id(np, "serial");
if (id >= 0)
@ -325,8 +322,6 @@ static int dw8250_probe_acpi(struct uart_8250_port *up,
{
struct uart_port *p = &up->port;
dw8250_setup_port(up);
p->iotype = UPIO_MEM32;
p->serial_in = dw8250_serial_in32;
p->serial_out = dw8250_serial_out32;
@ -486,6 +481,9 @@ static int dw8250_probe(struct platform_device *pdev)
goto err_reset;
}
if (!data->skip_autocfg)
dw8250_setup_port(&uart);
/* If we have a valid fifosize, try hooking up DMA */
if (p->fifosize) {
data->dma.rxconf.src_maxburst = p->fifosize / 4;