lkml.org 
[lkml]   [2019]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 09/19] PM / devfreq: tegra: Change interrupt request order
Date
The interrupt should be requested after devfreq initialization because
interrupt handler uses the devfreq, otherwise interrupt handler will
crash if interrupt fires before the initialization. This shouldn't
happen in practice, but it's more correct to have interrupt available
after all of interrupt prerequisites are ready.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/devfreq/tegra-devfreq.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
index 98ba27b1e2c4..2a1464098200 100644
--- a/drivers/devfreq/tegra-devfreq.c
+++ b/drivers/devfreq/tegra-devfreq.c
@@ -686,14 +686,6 @@ static int tegra_devfreq_probe(struct platform_device *pdev)

platform_set_drvdata(pdev, tegra);

- err = devm_request_threaded_irq(&pdev->dev, irq, actmon_isr,
- actmon_thread_isr, IRQF_SHARED,
- "tegra-devfreq", tegra);
- if (err) {
- dev_err(&pdev->dev, "Interrupt request failed\n");
- return err;
- }
-
tegra_devfreq_profile.initial_freq = clk_get_rate(tegra->emc_clock);
tegra->devfreq = devm_devfreq_add_device(&pdev->dev,
&tegra_devfreq_profile,
@@ -701,6 +693,14 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
NULL);
if (IS_ERR(tegra->devfreq)) {
err = PTR_ERR(tegra->devfreq);
+ return err;
+ }
+
+ err = devm_request_threaded_irq(&pdev->dev, irq, actmon_isr,
+ actmon_thread_isr, IRQF_SHARED,
+ "tegra-devfreq", tegra);
+ if (err) {
+ dev_err(&pdev->dev, "Interrupt request failed\n");
goto remove_opps;
}

--
2.21.0
\
 
 \ /
  Last update: 2019-04-15 16:58    [W:0.119 / U:0.700 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site