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Add ENOTSUP fallback in mutex lock/unlock for pre-RTOS operation #52

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Merged
JohnAmadis merged 2 commits into from
Mar 5, 2026
Merged

Add ENOTSUP fallback in mutex lock/unlock for pre-RTOS operation #52

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82de00e
Initial plan
Copilot Mar 5, 2026
9a7a381
Add ENOTSUP fallback for DMVFS mutexes before RTOS start
Copilot Mar 5, 2026
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21 changes: 19 additions & 2 deletions src/dmvfs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
#include "dmvfs.h"
#include <string.h>
#include <stdbool.h>
#include <errno.h>

typedef struct {
Dmod_Context_t* fs_context;
Expand Down Expand Up @@ -56,7 +57,18 @@ static inline bool lock_mutex(void)
}
if(g_mutex != NULL)
{
return (Dmod_Mutex_Lock(g_mutex) == 0);
int ret = Dmod_Mutex_Lock(g_mutex);
if (ret == 0)
{
return true;
}
else if (ret == -ENOTSUP)
{
/* RTOS has not started yet - fall back to critical sections */
Dmod_EnterCritical();
return true;
}
return false;
}
else
{
Expand All @@ -72,7 +84,12 @@ static inline void unlock_mutex(void)
{
if(g_mutex != NULL)
{
Dmod_Mutex_Unlock(g_mutex);
int ret = Dmod_Mutex_Unlock(g_mutex);
if (ret == -ENOTSUP)
{
/* RTOS has not started yet - we used critical sections for locking */
Dmod_ExitCritical();
}
}
else
{
Expand Down