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mm-port-serial: add new MM_SERIAL_ERROR_SEND_TIMEOUT

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This new error code 'MM_SERIAL_ERROR_SEND_TIMEOUT' is used to make it easier
to distinguish why the transmission failed. Until now,
'MM_SERIAL_ERROR_SEND_FAILED' was always returned. This new error code is now
returned for an 'EAGAIN', as this is more likely to be a TIMEOUT.

This makes debugging easier, as a better error analysis is now possible.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
This commit is contained in:
Florian Eckert
2025-06-02 08:43:45 -05:00
committed by Dan Williams
parent 37f17d4b58
commit 44b9f74301
3 changed files with 5 additions and 2 deletions
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include/ModemManager-errors.h
+2
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@@ -521,6 +521,7 @@ typedef enum { /*< underscore_name=mm_connection_error >*/
* @MM_SERIAL_ERROR_NOT_OPEN: The serial port is not open.
* @MM_SERIAL_ERROR_PARSE_FAILED: The serial port specific parsing failed.
* @MM_SERIAL_ERROR_FRAME_NOT_FOUND: The serial port reported that the frame marker wasn't found (e.g. for QCDM). Since 1.6.
* @MM_SERIAL_ERROR_SEND_TIMEOUT: Could not write once again to the serial device.
*
* Serial errors that may be reported by ModemManager.
*
@@ -536,6 +537,7 @@ typedef enum { /*< underscore_name=mm_serial_error >*/
MM_SERIAL_ERROR_NOT_OPEN = 6, /*< nick=NotOpen >*/
MM_SERIAL_ERROR_PARSE_FAILED = 7, /*< nick=ParseFailed >*/
MM_SERIAL_ERROR_FRAME_NOT_FOUND = 8, /*< nick=FrameNotFound >*/
MM_SERIAL_ERROR_SEND_TIMEOUT = 9, /*< nick=SendTimeout >*/
} MMSerialError;
/**