bcm27xx: add linux 5.4 support

Tested on bcm2710 (Raspberry Pi 3B).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0350-staging-vchiq_arm-Unify-the-unload-handling-of-platf.patch b/target/linux/bcm27xx/patches-5.4/950-0350-staging-vchiq_arm-Unify-the-unload-handling-of-platf.patch
new file mode 100644
index 0000000000..9bcd967b8a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0350-staging-vchiq_arm-Unify-the-unload-handling-of-platf.patch
@@ -0,0 +1,29 @@
+From 91da858c9327352c17a1f20ec10e78113ed45c82 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 6 Nov 2019 13:58:18 +0000
+Subject: [PATCH] staging: vchiq_arm: Unify the unload handling of
+ platform devs
+
+A helper function vchiq_register_child was added to deal with
+adding the platform devices. This returns NULL on failure, and
+that is assigned to the struct platform_device. There is
+therefore no way for remove to encounter an error pointer, so
+checking for IS_ERR() is redundant.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -3268,8 +3268,7 @@ failed_platform_init:
+ 
+ static int vchiq_remove(struct platform_device *pdev)
+ {
+-	if (!IS_ERR(bcm2835_camera))
+-		platform_device_unregister(bcm2835_camera);
++	platform_device_unregister(bcm2835_camera);
+ 	platform_device_unregister(bcm2835_codec);
+ 	platform_device_unregister(vcsm_cma);
+ 	vchiq_debugfs_deinit();