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Sometimes the HID open doesn't succeed immediately after being notified about the device

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Tested on Steam Link hardware with the Nintendo Switch Pro controller, which will occasionally take 2 attempts to open.
This commit is contained in:
Sam Lantinga 2022-10-31 13:33:53 -07:00
parent 27ee8c8e14
commit b75d318776
1 changed files with 10 additions and 1 deletions
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11
src/joystick/hidapi/SDL_hidapijoystick.c
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@ -368,6 +368,8 @@ HIDAPI_SetupDeviceDriver(SDL_HIDAPI_Device *device, SDL_bool *removed)
* *
* See https://github.com/libsdl-org/SDL/issues/6347 for details * See https://github.com/libsdl-org/SDL/issues/6347 for details
*/ */
const int MAX_ATTEMPTS = 3;
int attempt;
int lock_count = 0; int lock_count = 0;
SDL_HIDAPI_Device *curr; SDL_HIDAPI_Device *curr;
SDL_hid_device *dev; SDL_hid_device *dev;
@ -378,7 +380,14 @@ HIDAPI_SetupDeviceDriver(SDL_HIDAPI_Device *device, SDL_bool *removed)
++lock_count; ++lock_count;
SDL_UnlockJoysticks(); SDL_UnlockJoysticks();
} }
dev = SDL_hid_open_path(path, 0); for (attempt = 0; attempt < MAX_ATTEMPTS; ++attempt) {
dev = SDL_hid_open_path(path, 0);
if (dev != NULL) {
break;
}
/* Wait a bit and try again */
SDL_Delay(30);
}
while (lock_count > 0) { while (lock_count > 0) {
--lock_count; --lock_count;
SDL_LockJoysticks(); SDL_LockJoysticks();