openwrt/target/linux/brcm2708/patches-4.9/950-0185-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch
Kevin Darbyshire-Bryant 9aa196e0f2 kernel: bump 4.9 to 4.9.96
Refresh patches, following required reworking:

ar71xx/patches-4.9/930-chipidea-pullup.patch
layerscape/patches-4.9/302-dts-support-layercape.patch
sunxi/patches-4.9/0052-stmmac-form-4-12.patch

Fixes for CVEs:
CVE-2018-1108
CVE-2018-1092

Tested on: ar71xx Archer C7 v2

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Tested-by: Arjen de Korte <build+openwrt@de-korte.org>
2018-04-26 08:53:54 +02:00

29 lines
907 B
Diff

From a2ca8b47db0d08735e1c0ebeaf34e88522091662 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 13 Feb 2017 17:20:08 +0000
Subject: [PATCH] clk-bcm2835: Mark used PLLs and dividers CRITICAL
The VPU configures and relies on several PLLs and dividers. Mark all
enabled dividers and their PLLs as CRITICAL to prevent the kernel from
switching them off.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/clk/bcm/clk-bcm2835.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1372,6 +1372,11 @@ bcm2835_register_pll_divider(struct bcm2
divider->div.hw.init = &init;
divider->div.table = NULL;
+ if (!(cprman_read(cprman, data->cm_reg) & data->hold_mask)) {
+ init.flags |= CLK_IS_CRITICAL;
+ divider->div.flags |= CLK_IS_CRITICAL;
+ }
+
divider->cprman = cprman;
divider->data = data;