Allow opening joysticks that are read-only on Linux Fixes https://github.com/libsdl-org/SDL/issues/4713
diff --git a/src/joystick/linux/SDL_sysjoystick.c b/src/joystick/linux/SDL_sysjoystick.c
index 984005f..9a0a60e 100644
--- a/src/joystick/linux/SDL_sysjoystick.c
+++ b/src/joystick/linux/SDL_sysjoystick.c
@@ -963,7 +963,12 @@ PrepareJoystickHwdata(SDL_Joystick *joystick, SDL_joylist_item *item)
&joystick->naxes,
&joystick->nhats);
} else {
- const int fd = open(item->path, O_RDWR | O_CLOEXEC, 0);
+ /* Try read-write first, so we can do rumble */
+ int fd = open(item->path, O_RDWR | O_CLOEXEC, 0);
+ if (fd < 0) {
+ /* Try read-only again, at least we'll get events in this case */
+ fd = open(item->path, O_RDONLY | O_CLOEXEC, 0);
+ }
if (fd < 0) {
return SDL_SetError("Unable to open %s", item->path);
}