Commit 841d6e9e authored by Linus Torvalds's avatar Linus Torvalds
Browse files
Pull thermal fix from Daniel Lezcano:
 "Disable the CPU PM notifier for OMAP4430 for suspend in order to
  prevent wrong temperature leading to a critical shutdown (Peter
  Ujfalusi)"

* tag 'thermal-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal: ti-soc-thermal: Disable the CPU PM notifier for OMAP4430
parents c2e7554e b98467fe
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+16 −2
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@
#include <linux/err.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/sys_soc.h>
#include <linux/reboot.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
@@ -864,6 +865,17 @@ static struct ti_bandgap *ti_bandgap_build(struct platform_device *pdev)
	return bgp;
}

/*
 * List of SoCs on which the CPU PM notifier can cause erros on the DTEMP
 * readout.
 * Enabled notifier on these machines results in erroneous, random values which
 * could trigger unexpected thermal shutdown.
 */
static const struct soc_device_attribute soc_no_cpu_notifier[] = {
	{ .machine = "OMAP4430" },
	{ /* sentinel */ },
};

/***   Device driver call backs   ***/

static
@@ -1020,6 +1032,7 @@ int ti_bandgap_probe(struct platform_device *pdev)

#ifdef CONFIG_PM_SLEEP
	bgp->nb.notifier_call = bandgap_omap_cpu_notifier;
	if (!soc_device_match(soc_no_cpu_notifier))
		cpu_pm_register_notifier(&bgp->nb);
#endif

@@ -1056,6 +1069,7 @@ int ti_bandgap_remove(struct platform_device *pdev)
	struct ti_bandgap *bgp = platform_get_drvdata(pdev);
	int i;

	if (!soc_device_match(soc_no_cpu_notifier))
		cpu_pm_unregister_notifier(&bgp->nb);

	/* Remove sensor interfaces */