etnaviv: fix refcnt initialization in etna_screen

Despite being a member of the etna_screen struct, 'refcnt' is used by
the winsys-specific logic to track the reference count of the object
managed in a hash table. When the count reaches zero, the pipe screen
is removed from the table and destroyed.

Fix the logic by initializing the refcnt to 1 when screen created.
This initialization is done in etna_screen_create(), to follow the
same logic as in freedreno and virgl.

Fixes: c9e8b49b885 ("etnaviv: gallium driver for Vivante GPUs")
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index eefb51c5dadea798957a66ae47c1a3e47da57e94..fa0cbd907647db4e92444275410d11a50289b81a 100644 (file)
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -772,6 +772,7 @@ etna_screen_create(struct etna_device *dev, struct etna_gpu *gpu,
    screen->dev = dev;
    screen->gpu = gpu;
    screen->ro = renderonly_dup(ro);
+   screen->refcnt = 1;
 
    if (!screen->ro) {
       DBG("could not create renderonly object");