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78ecc56247
linux/drivers/base/power
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Jon Hunter 78ecc56247 PM / OPP: Fix NULL pointer dereference crash when disabling OPPs 
Commit 7d34d56ef3 (PM / OPP: Disable OPPs that aren't supported by
the regulator) causes a crash to happen on Tegra124 Jetson TK1 when
using the DFLL clock source for the CPU.  The DFLL manages the voltage
itself and so there is no regulator specified for the OPPs and so we
get a crash when we try to dereference the regulator pointer.  Fix
this by checking to see if the regulator IS_ERR_OR_NULL before
dereferencing it.

Fixes: 7d34d56ef3 (PM / OPP: Disable OPPs that aren't supported by the regulator)
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-02-11 22:05:38 +01:00
..
opp PM / OPP: Fix NULL pointer dereference crash when disabling OPPs 2016-02-11 22:05:38 +01:00
clock_ops.c PM / Domains: add setter for dev.pm_domain 2016-01-08 01:12:06 +01:00
common.c PM: Avoid false-positive warnings in dev_pm_domain_set() 2016-02-03 19:10:37 +01:00
domain_governor.c PM / Domains: Validate cases of a non-bound driver in genpd governor 2015-12-02 15:21:21 +01:00
domain.c PM / Domains: Silence compiler warning for an unused function 2016-02-03 01:24:36 +01:00
generic_ops.c PM / PCI / ACPI: Kick devices that might have been reset by firmware 2015-10-14 02:17:34 +02:00
main.c PM / sleep: Go direct_complete if driver has no callbacks 2016-01-08 01:12:06 +01:00
Makefile PM / OPP: Move opp core to its own directory 2015-09-15 02:03:16 +02:00
power.h PM / sleep: Go direct_complete if driver has no callbacks 2016-01-08 01:12:06 +01:00
qos.c PM / QoS: Make it possible to expose device latency tolerance to userspace 2015-07-28 08:50:41 +01:00
runtime.c PM / runtime: Add new helper for conditional usage count incrementation 2015-12-21 03:11:12 +01:00
sysfs.c PM / QoS: Make it possible to expose device latency tolerance to userspace 2015-07-28 08:50:41 +01:00
trace.c PM / sleep: add pm-trace support for suspending phase 2015-03-18 15:54:27 +01:00
wakeirq.c PM / wakeirq: check that wake IRQ is valid before accepting it 2015-11-16 23:10:20 +01:00
wakeup.c PM / wakeup: wakeup_source_create: use kstrdup_const 2015-09-25 02:30:50 +02:00