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authorMatthias Kaehlcke <mka@chromium.org>2017-07-31 21:37:28 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2017-08-10 15:48:17 +0300
commitd197f7988721221fac64f899efd7657c15281810 (patch)
tree82d4093b5b9c6cda12750553442887be788f0f2a /drivers/clocksource
parent34f41c0316ed52b0b44542491d89278efdaa70e4 (diff)
downloadlinux-d197f7988721221fac64f899efd7657c15281810.tar.xz
clocksource/drivers/arm_arch_timer: Fix mem frame loop initialization
The loop to find the best memory frame in arch_timer_mem_acpi_init() initializes the loop counter with itself ('i = i'), which is suspicious in the first place and pointed out by clang. The loop condition is 'i < timer_count' and a prior for loop exits when 'i' reaches 'timer_count', therefore the second loop is never executed. Initialize the loop counter with 0 to iterate over all timers, which supposedly was the intention before the typo monster attacked. Fixes: c2743a36765d3 ("clocksource: arm_arch_timer: add GTDT support for memory-mapped timer") Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/arm_arch_timer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index aae87c4c546e..72bbfccef113 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -1440,7 +1440,7 @@ static int __init arch_timer_mem_acpi_init(int platform_timer_count)
* While unlikely, it's theoretically possible that none of the frames
* in a timer expose the combination of feature we want.
*/
- for (i = i; i < timer_count; i++) {
+ for (i = 0; i < timer_count; i++) {
timer = &timers[i];
frame = arch_timer_mem_find_best_frame(timer);