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Message-ID: <alpine.DEB.2.20.1708201118331.6785@nanos>
Date: Sun, 20 Aug 2017 11:24:31 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
cc: LKML <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
"H. Peter Anvin" <hpa@...or.com>
Subject: [GIT pull] timer fixes for 4.13
Linus,
please pull the latest timers-urgent-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-for-linus
A few small fixes for timer drivers:
- Prevent infinite recursion in the arm architected timer driver with
ftrace
- Propagate error codes to the caller in case of failure in EM STI driver
- Adjust a bogus loop iteration in the arm architected timer driver
- Add a missing Kconfig dependency to the pistachio clocksource to prevent
build failures
- Correctly check for IS_ERR() instead of NULL in the shared timer-of
code,
Thanks,
tglx
------------------>
Dan Carpenter (1):
clocksource/drivers/timer-of: Checking for IS_ERR() instead of NULL
Ding Tianhong (1):
clocksource/drivers/arm_arch_timer: Avoid infinite recursion when ftrace is enabled
Gustavo A. R. Silva (1):
clocksource/drivers/em_sti: Fix error return codes in em_sti_probe()
Matt Redfearn (1):
clocksource/drivers/Kconfig: Fix CLKSRC_PISTACHIO dependencies
Matthias Kaehlcke (1):
clocksource/drivers/arm_arch_timer: Fix mem frame loop initialization
arch/arm64/include/asm/arch_timer.h | 4 ++--
drivers/clocksource/Kconfig | 2 +-
drivers/clocksource/arm_arch_timer.c | 2 +-
drivers/clocksource/em_sti.c | 11 ++++++-----
drivers/clocksource/timer-of.c | 4 ++--
5 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/arch/arm64/include/asm/arch_timer.h b/arch/arm64/include/asm/arch_timer.h
index 74d08e44a651..a652ce0a5cb2 100644
--- a/arch/arm64/include/asm/arch_timer.h
+++ b/arch/arm64/include/asm/arch_timer.h
@@ -65,13 +65,13 @@ DECLARE_PER_CPU(const struct arch_timer_erratum_workaround *,
u64 _val; \
if (needs_unstable_timer_counter_workaround()) { \
const struct arch_timer_erratum_workaround *wa; \
- preempt_disable(); \
+ preempt_disable_notrace(); \
wa = __this_cpu_read(timer_unstable_counter_workaround); \
if (wa && wa->read_##reg) \
_val = wa->read_##reg(); \
else \
_val = read_sysreg(reg); \
- preempt_enable(); \
+ preempt_enable_notrace(); \
} else { \
_val = read_sysreg(reg); \
} \
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index fcae5ca6ac92..54a67f8a28eb 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -262,7 +262,7 @@ config CLKSRC_LPC32XX
config CLKSRC_PISTACHIO
bool "Clocksource for Pistachio SoC" if COMPILE_TEST
- depends on HAS_IOMEM
+ depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
select TIMER_OF
help
Enables the clocksource for the Pistachio SoC.
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);
diff --git a/drivers/clocksource/em_sti.c b/drivers/clocksource/em_sti.c
index bc48cbf6a795..269db74a0658 100644
--- a/drivers/clocksource/em_sti.c
+++ b/drivers/clocksource/em_sti.c
@@ -305,7 +305,7 @@ static int em_sti_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "failed to get irq\n");
- return -EINVAL;
+ return irq;
}
/* map memory, let base point to the STI instance */
@@ -314,11 +314,12 @@ static int em_sti_probe(struct platform_device *pdev)
if (IS_ERR(p->base))
return PTR_ERR(p->base);
- if (devm_request_irq(&pdev->dev, irq, em_sti_interrupt,
- IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
- dev_name(&pdev->dev), p)) {
+ ret = devm_request_irq(&pdev->dev, irq, em_sti_interrupt,
+ IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
+ dev_name(&pdev->dev), p);
+ if (ret) {
dev_err(&pdev->dev, "failed to request low IRQ\n");
- return -ENOENT;
+ return ret;
}
/* get hold of clock */
diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
index d509b500a7b5..4d7aef9d9c15 100644
--- a/drivers/clocksource/timer-of.c
+++ b/drivers/clocksource/timer-of.c
@@ -128,9 +128,9 @@ static __init int timer_base_init(struct device_node *np,
const char *name = of_base->name ? of_base->name : np->full_name;
of_base->base = of_io_request_and_map(np, of_base->index, name);
- if (!of_base->base) {
+ if (IS_ERR(of_base->base)) {
pr_err("Failed to iomap (%s)\n", name);
- return -ENXIO;
+ return PTR_ERR(of_base->base);
}
return 0;
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