bcm27xx: update patches from RPi foundation

[openwrt/staging/luka.git] / target / linux / bcm27xx / patches-5.4 / 950-0433-staging-vc04_services-Fix-vcsm-overflow-bug-when-cou.patch

diff --git a/target/linux/bcm27xx/patches-5.4/950-0433-staging-vc04_services-Fix-vcsm-overflow-bug-when-cou.patch b/target/linux/bcm27xx/patches-5.4/950-0433-staging-vc04_services-Fix-vcsm-overflow-bug-when-cou.patch
new file mode 100644 (file)
index 0000000..4774fd2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0433-staging-vc04_services-Fix-vcsm-overflow-bug-when-cou.patch
@@ -0,0 +1,26 @@
+From 38e906c77467bf83ec130bea6859b46ea1e0d4b8 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 30 Jan 2020 12:35:44 +0000
+Subject: [PATCH] staging: vc04_services: Fix vcsm overflow bug when
+ counting transactions
+
+The response block and local state were using u16 and u32 respectively
+to represent transaction id.  When the former would wrap, there is a
+mismatch and subsequent transactions will be marked as failures.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
+@@ -34,7 +34,7 @@ struct sm_cmd_rsp_blk {
+       /* To be signaled when the response is there */
+       struct completion cmplt;
+ 
+-      u16 id;
++      u32 id;
+       u16 length;
+ 
+       u8 msg[VC_SM_MAX_MSG_LEN];