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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-11-16 16:42:27 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-11-16 16:42:27 -0200 |
| commit | 36f94a5cf0f9afb527f18166ae56bd3cc7204f63 (patch) | |
| tree | 88d5d356343c2ddbdce083597dc0a63203171964 /arch/arm64/kernel/suspend.c | |
| parent | c0026c7bfb95c250c3e34fde59f96ad72fd730d6 (diff) | |
| parent | a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (diff) | |
Merge tag 'v4.9-rc5' into patchwork
Linux 4.9-rc5
* tag 'v4.9-rc5': (1102 commits)
Linux 4.9-rc5
gp8psk: Fix DVB frontend attach
gp8psk: fix gp8psk_usb_in_op() logic
dvb-usb: move data_mutex to struct dvb_usb_device
iio: maxim_thermocouple: detect invalid storage size in read()
aoe: fix crash in page count manipulation
lightnvm: invalid offset calculation for lba_shift
Kbuild: enable -Wmaybe-uninitialized warnings by default
pcmcia: fix return value of soc_pcmcia_regulator_set
infiniband: shut up a maybe-uninitialized warning
crypto: aesni: shut up -Wmaybe-uninitialized warning
rc: print correct variable for z8f0811
dib0700: fix nec repeat handling
s390: pci: don't print uninitialized data for debugging
nios2: fix timer initcall return value
x86: apm: avoid uninitialized data
NFSv4.1: work around -Wmaybe-uninitialized warning
Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
lib/stackdepot: export save/fetch stack for drivers
mm: kmemleak: scan .data.ro_after_init
...
Diffstat (limited to 'arch/arm64/kernel/suspend.c')
| -rw-r--r-- | arch/arm64/kernel/suspend.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c index ad734142070d..bb0cd787a9d3 100644 --- a/arch/arm64/kernel/suspend.c +++ b/arch/arm64/kernel/suspend.c @@ -1,8 +1,11 @@ #include <linux/ftrace.h> #include <linux/percpu.h> #include <linux/slab.h> +#include <asm/alternative.h> #include <asm/cacheflush.h> +#include <asm/cpufeature.h> #include <asm/debug-monitors.h> +#include <asm/exec.h> #include <asm/pgtable.h> #include <asm/memory.h> #include <asm/mmu_context.h> @@ -50,6 +53,14 @@ void notrace __cpu_suspend_exit(void) set_my_cpu_offset(per_cpu_offset(cpu)); /* + * PSTATE was not saved over suspend/resume, re-enable any detected + * features that might not have been set correctly. + */ + asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, + CONFIG_ARM64_PAN)); + uao_thread_switch(current); + + /* * Restore HW breakpoint registers to sane values * before debug exceptions are possibly reenabled * through local_dbg_restore. |