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console: rename console_buffer to console_input_buffer 

...as we want to add an output buffer, too

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-05-13 16:11:24 +02:00
parent a3c3f66abc
commit 2e8254e387
1 changed files with 11 additions and 5 deletions
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16
common/console.c
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@ -168,11 +168,11 @@ int getc_raw(void)
}
}
static struct kfifo *console_buffer;
static struct kfifo *console_input_buffer;
int getc_buffer_flush(void)
{
console_buffer = kfifo_alloc(1024);
console_input_buffer = kfifo_alloc(1024);
return 0;
}
@ -183,18 +183,24 @@ int getc(void)
unsigned char ch;
uint64_t start;
/*
* For 100us we read the characters from the serial driver
* into a kfifo. This helps us not to lose characters
* in small hardware fifos.
*/
start = get_time_ns();
while (1) {
if (tstc()) {
kfifo_putc(console_buffer, getc_raw());
kfifo_putc(console_input_buffer, getc_raw());
start = get_time_ns();
}
if (is_timeout(start, 100 * USECOND) && kfifo_len(console_buffer))
if (is_timeout(start, 100 * USECOND) &&
kfifo_len(console_input_buffer))
break;
}
kfifo_getc(console_buffer, &ch);
kfifo_getc(console_input_buffer, &ch);
return ch;
}
EXPORT_SYMBOL(getc);