brcm2708: update to latest patches from RPi foundation

[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.19 / 950-0207-staging-vchiq_arm-Improve-error-handling-on-loading-.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0207-staging-vchiq_arm-Improve-error-handling-on-loading-.patch b/target/linux/brcm2708/patches-4.19/950-0207-staging-vchiq_arm-Improve-error-handling-on-loading-.patch
new file mode 100644 (file)
index 0000000..087e3e5
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0207-staging-vchiq_arm-Improve-error-handling-on-loading-.patch
@@ -0,0 +1,39 @@
+From 73979b06255c3b7b536a53d09ea095aec8ed37aa Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Mon, 3 Dec 2018 12:50:38 +0000
+Subject: [PATCH] staging: vchiq_arm: Improve error handling on loading
+ drivers
+
+The handling of loading platform drivers requires checking IS_ERR
+for the pointer on unload.
+If the driver fails to load, NULL the pointer during probe as
+platform_device_unregister already checks for NULL.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../vc04_services/interface/vchiq_arm/vchiq_arm.c    | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -3654,6 +3654,8 @@ static int vchiq_probe(struct platform_d
+               MAJOR(vchiq_devid), MINOR(vchiq_devid));
+ 
+       bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
++      if (IS_ERR(bcm2835_camera))
++              bcm2835_camera = NULL;
+ 
+       return 0;
+ 
+@@ -3670,8 +3672,9 @@ 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_codec);
++      platform_device_unregister(bcm2835_camera);
++      platform_device_unregister(vcsm_cma);
+       vchiq_debugfs_deinit();
+       device_destroy(vchiq_class, vchiq_devid);
+       class_destroy(vchiq_class);