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console: add console_has_tstc helper function for CONSOLE_MUX

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Add the helper function console_has_tstc() and replace the test
#if CONFIG_IS_ENABLED(CONSOLE_MUX) to a simple 'if' test to
respect the U-Boot coding rule.

No functional change.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Patrick Delaunay 2020-12-18 12:46:46 +01:00 committed by Tom Rini
parent 1e993710e8
commit a17b38ce39
1 changed files with 25 additions and 12 deletions
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21
common/console.c
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@ -231,6 +231,7 @@ static bool console_dev_is_serial(struct stdio_dev *sdev)
#if CONFIG_IS_ENABLED(CONSOLE_MUX)
/** Console I/O multiplexing *******************************************/
/* tstcdev: save the last stdio device with pending characters, with tstc != 0 */
static struct stdio_dev *tstcdev;
struct stdio_dev **console_devices[MAX_FILES];
int cd_count[MAX_FILES];
@ -256,6 +257,12 @@ static int console_getc(int file)
return ret;
}
/* Upper layer may have already called tstc(): check the saved result */
static bool console_has_tstc(void)
{
return !!tstcdev;
}
static int console_tstc(int file)
{
int i, ret;
@ -348,6 +355,11 @@ static inline int console_getc(int file)
return stdio_devices[file]->getc(stdio_devices[file]);
}
static bool console_has_tstc(void)
{
return false;
}
static inline int console_tstc(int file)
{
return stdio_devices[file]->tstc(stdio_devices[file]);
@ -405,18 +417,19 @@ int fgetc(int file)
*/
for (;;) {
WATCHDOG_RESET();
#if CONFIG_IS_ENABLED(CONSOLE_MUX)
if (CONFIG_IS_ENABLED(CONSOLE_MUX)) {
/*
* Upper layer may have already called tstc() so
* check for that first.
*/
if (tstcdev != NULL)
if (console_has_tstc())
return console_getc(file);
console_tstc(file);
#else
} else {
if (console_tstc(file))
return console_getc(file);
#endif
}
/*
* If the watchdog must be rate-limited then it should
* already be handled in board-specific code.