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[PULL,20/28] chardev/char-fe: Document returned value on error

Message ID 20240723203855.65033-21-philmd@linaro.org
State Accepted
Commit b07f07761d85c97d478d9df3978fcd32f8fbb163
Headers show
Series [PULL,01/28] accel: Restrict probe_access*() functions to TCG | expand

Commit Message

Philippe Mathieu-Daudé July 23, 2024, 8:38 p.m. UTC 
qemu_chr_fe_add_watch() and qemu_chr_fe_write[_all]()
return -1 on error. Mention it in the documentation.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240722160745.67904-2-philmd@linaro.org>
---
 include/chardev/char-fe.h | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/include/chardev/char-fe.h b/include/chardev/char-fe.h
index ecef1828355..3310449eaf0 100644
--- a/include/chardev/char-fe.h
+++ b/include/chardev/char-fe.h
@@ -228,6 +228,7 @@  guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond,
  * is thread-safe.
  *
  * Returns: the number of bytes consumed (0 if no associated Chardev)
+ *          or -1 on error.
  */
 int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len);
 
@@ -242,6 +243,7 @@  int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len);
  * attempted to be written.  This function is thread-safe.
  *
  * Returns: the number of bytes consumed (0 if no associated Chardev)
+ *          or -1 on error.
  */
 int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len);
 
@@ -253,6 +255,7 @@  int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len);
  * Read data to a buffer from the back end.
  *
  * Returns: the number of bytes read (0 if no associated Chardev)
+ *          or -1 on error.
  */
 int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len);