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Fixed DualSense controllers not being picked up by the HIDAPI driver

The hidraw device may take additional time to get the correct permissions for us to open it. In my tests on Steam Deck hardware, this ranges between 5-8ms.
Sam Lantinga 3 yıl önce
ebeveyn
işleme
c6ee9780df
1 değiştirilmiş dosya ile 11 ekleme ve 1 silme
  1. 11 1
      src/hidapi/linux/hid.c

+ 11 - 1
src/hidapi/linux/hid.c

@@ -1096,7 +1096,17 @@ hid_device * HID_API_EXPORT hid_open_path(const char *path)
 		return NULL;
 		return NULL;
 	}
 	}
 
 
-	dev->device_handle = open(path, O_RDWR | O_CLOEXEC);
+    const int MAX_ATTEMPTS = 10;
+    int attempt;
+    for (attempt = 1; attempt <= MAX_ATTEMPTS; ++attempt) {
+        dev->device_handle = open(path, O_RDWR | O_CLOEXEC);
+        if (dev->device_handle < 0 && errno == EACCES) {
+            /* udev might be setting up permissions, wait a bit and try again */
+            usleep(1 * 1000);
+            continue;
+        }
+        break;
+    }
 
 
 	if (dev->device_handle >= 0) {
 	if (dev->device_handle >= 0) {
 		int res, desc_size = 0;
 		int res, desc_size = 0;