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subsystem: console: tty init checks and support for polled-only devices

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This patch add tty runtime initialization check for console support
routines. Without it callers of routines API are not aware that
initialization of tty was failed. This patch basically checks
availability of console device and also its support for
interrupt driven transfers if routines are configured to use it.

Signed-off-by: Pavel Kral <pavel.kral@omsquare.com>
This commit is contained in:
Pavel Kral 2019-07-15 19:02:29 +02:00 • committed by Carles Cufí
commit 51eb4572f5
3 changed files with 26 additions and 4 deletions
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4
include/console/console.h
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@ -23,9 +23,9 @@ extern "C" {
* and incompatible with, callback (push-style) console handling
* (via console_input_fn callback, etc.).
*
* @return N/A
* @return 0 on success, error code (<0) otherwise
*/
void console_init(void);
int console_init(void);
/**
* @brief Read data from console.