Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-10 07:50:04 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

drivers/clocksource/pistachio: Fix memory corruption in init

Browse Source 
Driver init code incorrectly uses the block base address and as a result
clears clocksource structure's fields instead of the hardware registers.

Commit 09a998201649 ("timekeeping: Lift clocksource cacheline
restriction") has changed the offsets within pistachio_clocksource
structure and what has previously gone unnoticed now leads to a kernel
panic during boot.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Marcin Nowakowski 2016-08-17 12:22:33 +02:00 committed by Daniel Lezcano
parent 699e36e5b8
commit 4d0e701659
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/clocksource/time-pistachio.c
View File

@ -202,10 +202,10 @@ static int __init pistachio_clksrc_of_init(struct device_node *node)
rate = clk_get_rate(fast_clk);
/* Disable irq's for clocksource usage */
gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 0);
gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 1);
gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 2);
gpt_writel(&pcs_gpt.base, 0, TIMER_IRQ_MASK, 3);
gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 0);
gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 1);
gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 2);
gpt_writel(pcs_gpt.base, 0, TIMER_IRQ_MASK, 3);
/* Enable timer block */
writel(TIMER_ME_GLOBAL, pcs_gpt.base);