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Serial kernel: Fix driver lifecycle

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- Make sure we don't install a driver on top of another one
- Make sure we don't uninstall a driver twice
- Make sure we uninstall a driver if needed at exit
This commit is contained in:
Colin Leroy-Mira
2023-09-12 20:54:32 +02:00
parent aa5ee8423a
commit 3fc074014e
2 changed files with 22 additions and 3 deletions
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doc/funcref.sgml
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@@ -6693,7 +6693,8 @@ be used in presence of a prototype.
<tag/Function/Uninstall the currently loaded driver but do not unload it.
<tag/Header/<tt/<ref id="serial.h" name="serial.h">/
<tag/Declaration/<tt/unsigned char ser_uninstall (void);/
<tag/Description/Uninstall the currently loaded driver but do not unload it.
<tag/Description/Uninstall the currently loaded driver but do not unload it. This
function returns SER_ERR_NO_DRIVER if no driver was installed, 0 otherwise.
<tag/Availability/cc65
<tag/See also/Other serial functions.
<tag/Example/None.