Commit bef9f2b2c423d636e2388c62412c754f3bd45968

Sam Lantinga 2022-05-26T20:45:13

Don't trigger device notifications when Steam Deck backlight changes

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diff --git a/src/hidapi/SDL_hidapi.c b/src/hidapi/SDL_hidapi.c
index 9b25742..3808ceb 100644
--- a/src/hidapi/SDL_hidapi.c
+++ b/src/hidapi/SDL_hidapi.c
@@ -416,7 +416,10 @@ HIDAPI_UpdateDiscovery()
                     const char *action = NULL;
                     action = usyms->udev_device_get_action(pUdevDevice);
                     if (!action || SDL_strcmp(action, "add") == 0 || SDL_strcmp(action, "remove") == 0) {
-                        ++SDL_HIDAPI_discovery.m_unDeviceChangeCounter;
+                        const char *subsystem = usyms->udev_device_get_subsystem(pUdevDevice);
+                        if (!subsystem || SDL_strcmp(subsystem, "backlight") != 0) {
+                            ++SDL_HIDAPI_discovery.m_unDeviceChangeCounter;
+                        }
                     }
                     usyms->udev_device_unref(pUdevDevice);
                 }