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Merge pull request #2987 from hathach/fix-2923-alt

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make sure TOTAL_DRIVER_COUNT is not overflow 8-bit
This commit is contained in:
Ha Thach
2025-07-10 18:50:42 +07:00
committed by GitHub
parent 546e8413b5 ea38115d6c
commit 40dc1dd436
1 changed files with 5 additions and 6 deletions
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5
src/device/usbd.c
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@@ -329,7 +329,7 @@ enum { BUILTIN_DRIVER_COUNT = TU_ARRAY_SIZE(_usbd_driver) };
tu_static usbd_class_driver_t const * _app_driver = NULL;
tu_static uint8_t _app_driver_count = 0;
#define TOTAL_DRIVER_COUNT (_app_driver_count + BUILTIN_DRIVER_COUNT)
#define TOTAL_DRIVER_COUNT ((uint8_t) (_app_driver_count + BUILTIN_DRIVER_COUNT))
// virtually joins built-in and application drivers together.
// Application is positioned first to allow overwriting built-in ones.
@@ -344,11 +344,9 @@ TU_ATTR_ALWAYS_INLINE static inline usbd_class_driver_t const * get_driver(uint8
return driver;
}
//--------------------------------------------------------------------+
// DCD Event
//--------------------------------------------------------------------+
enum { RHPORT_INVALID = 0xFFu };
tu_static uint8_t _usbd_rhport = RHPORT_INVALID;
@@ -520,6 +518,7 @@ bool tud_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
// Get application driver if available
if (usbd_app_driver_get_cb) {
_app_driver = usbd_app_driver_get_cb(&_app_driver_count);
TU_ASSERT(_app_driver_count + BUILTIN_DRIVER_COUNT <= UINT8_MAX);
}
// Init class drivers