Prepration for PPP and 5.16 support

sys-kernel/pinephone-sources/files/0004-media-rockchip-rga-Fix-probe-bugs.patch

@@ -0,0 +1,39 @@
+From: Ondrej Jirman <megous@megous.com>
+Date: Sun, 21 Nov 2021 17:00:09 +0100
+Subject: [PATCH 24/36] media: rockchip: rga: Fix probe bugs
+
+The check for dst_mmu_pages allocation failure was inverted.
+
+rga_parse_dt is missing a error return, so if some of the resources
+return DEFER_PROBE, probe will succeed without these resources.
+
+Signed-off-by: Ondrej Jirman <megous@megous.com>
+---
+ drivers/media/platform/rockchip/rga/rga.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c
+index 4de5e8d..82cc0c0 100644
+--- a/drivers/media/platform/rockchip/rga/rga.c
++++ b/drivers/media/platform/rockchip/rga/rga.c
+@@ -815,8 +815,10 @@ static int rga_probe(struct platform_device *pdev)
+ 	mutex_init(&rga->mutex);
+ 
+ 	ret = rga_parse_dt(rga);
+-	if (ret)
++	if (ret) {
+ 		dev_err(&pdev->dev, "Unable to parse OF data\n");
++		return ret;
++	}
+ 
+ 	pm_runtime_enable(rga->dev);
+ 
+@@ -892,7 +894,7 @@ static int rga_probe(struct platform_device *pdev)
+ 	}
+ 	rga->dst_mmu_pages =
+ 		(unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
+-	if (rga->dst_mmu_pages) {
++	if (!rga->dst_mmu_pages) {
+ 		ret = -ENOMEM;
+ 		goto free_src_pages;
+ 	}