Geert Uytterhoeven 09712f557b cpufreq: Avoid crash in resume on SMP without OPP ... When resuming from s2ram on an SMP system without cpufreq operating points (e.g. there's no "operating-points" property for the CPU node in DT, or the platform doesn't use DT yet), the kernel crashes when bringing CPU 1 online: Enabling non-boot CPUs ... CPU1: Booted secondary processor Unable to handle kernel NULL pointer dereference at virtual address 0000003c pgd = ee5e6b00 [0000003c] *pgd=6e579003, *pmd=6e588003, *pte=00000000 Internal error: Oops: a07 [#1] SMP ARM Modules linked in: CPU: 0 PID: 1246 Comm: s2ram Tainted: G W 3.18.0-rc3-koelsch-01614-g0377af242bb175c8-dirty #589 task: eeec5240 ti: ee704000 task.ti: ee704000 PC is at __cpufreq_add_dev.isra.24+0x24c/0x77c LR is at __cpufreq_add_dev.isra.24+0x244/0x77c pc : [<c0298efc>] lr : [<c0298ef4>] psr: 60000153 sp : ee705d48 ip : ee705d48 fp : ee705d84 r10: c04e0450 r9 : 00000000 r8 : 00000001 r7 : c05426a8 r6 : 00000001 r5 : 00000001 r4 : 00000000 r3 : 00000000 r2 : 00000000 r1 : 20000153 r0 : c0542734 Verify that policy is not NULL before dereferencing it to fix this. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Fixes: 8414809c6a (cpufreq: Preserve policy structure across suspend/resume) Cc: 3.12+ <stable@vger.kernel.org> # 3.12+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2014-11-08 02:10:04 +01:00
..
acpi-cpufreq.c
amd_freq_sensitivity.c
arm_big_little.c
arm_big_little.h
arm_big_little_dt.c
at32ap-cpufreq.c
blackfin-cpufreq.c
cpufreq-dt.c	cpufreq: cpufreq-dt: Fix arguments in clock failure error message	2014-11-05 20:51:21 +01:00
cpufreq-nforce2.c
cpufreq.c	cpufreq: Avoid crash in resume on SMP without OPP	2014-11-08 02:10:04 +01:00
cpufreq_conservative.c
cpufreq_governor.c
cpufreq_governor.h
cpufreq_ondemand.c
cpufreq_opp.c
cpufreq_performance.c
cpufreq_powersave.c
cpufreq_stats.c
cpufreq_userspace.c
cris-artpec3-cpufreq.c
cris-etraxfs-cpufreq.c
davinci-cpufreq.c
dbx500-cpufreq.c
e_powersaver.c
elanfreq.c
exynos-cpufreq.c
exynos-cpufreq.h
exynos4x12-cpufreq.c	cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'	2014-10-03 15:37:54 +02:00
exynos4210-cpufreq.c	cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'	2014-10-03 15:37:54 +02:00
exynos5250-cpufreq.c	cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'	2014-10-03 15:37:54 +02:00
exynos5440-cpufreq.c
freq_table.c
gx-suspmod.c
highbank-cpufreq.c	Merge branch 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2014-10-21 11:21:19 -07:00
ia64-acpi-cpufreq.c
imx6q-cpufreq.c
integrator-cpufreq.c
intel_pstate.c	intel_pstate: Correct BYT VID values.	2014-10-23 23:00:00 +02:00
Kconfig	cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'	2014-10-03 15:37:54 +02:00
Kconfig.arm	ACPI and power management updates for 3.18-rc1	2014-10-09 16:07:43 -04:00
Kconfig.powerpc
Kconfig.x86
kirkwood-cpufreq.c
longhaul.c
longhaul.h
longrun.c
loongson2_cpufreq.c
Makefile	cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'	2014-10-03 15:37:54 +02:00
maple-cpufreq.c
omap-cpufreq.c
p4-clockmod.c
pasemi-cpufreq.c
pcc-cpufreq.c
pmac32-cpufreq.c	powerpc: Remove powerpc specific cmd_line	2014-10-02 17:33:55 +10:00
pmac64-cpufreq.c
powernow-k6.c
powernow-k7.c
powernow-k7.h
powernow-k8.c
powernow-k8.h
powernv-cpufreq.c
ppc-corenet-cpufreq.c	cpufreq: ppc-corenet: remove duplicate update of cpu_data	2014-09-30 21:09:40 +02:00
ppc_cbe_cpufreq.c
ppc_cbe_cpufreq.h
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c
pxa2xx-cpufreq.c
pxa3xx-cpufreq.c
s3c24xx-cpufreq-debugfs.c
s3c24xx-cpufreq.c
s3c64xx-cpufreq.c
s3c2410-cpufreq.c
s3c2412-cpufreq.c
s3c2416-cpufreq.c
s3c2440-cpufreq.c
s5pv210-cpufreq.c	cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'	2014-10-03 15:37:54 +02:00
sa1100-cpufreq.c
sa1110-cpufreq.c
sc520_freq.c
sh-cpufreq.c
sparc-us2e-cpufreq.c
sparc-us3-cpufreq.c
spear-cpufreq.c
speedstep-centrino.c
speedstep-ich.c
speedstep-lib.c
speedstep-lib.h
speedstep-smi.c
tegra-cpufreq.c
unicore2-cpufreq.c
vexpress-spc-cpufreq.c