diff options
author | Tao Huang <huangtao@rock-chips.com> | 2018-01-26 18:59:12 +0800 |
---|---|---|
committer | Tao Huang <huangtao@rock-chips.com> | 2018-01-26 19:26:47 +0800 |
commit | 640193f76baa240dcd0721127a1fa3c56eb6d014 (patch) | |
tree | b5137dfdf582fc3d1fa26535dd22d443d947bd1f /drivers/base | |
parent | 6802789fb99360f9ef281b372a31fbcd22f0e745 (diff) | |
parent | c210bc406de6a7993b8d7f30c28436be80de7694 (diff) |
Merge branch 'linux-linaro-lsk-v4.4-android' of git://git.linaro.org/kernel/linux-linaro-stable.git
* linux-linaro-lsk-v4.4-android: (733 commits)
LSK-ANDROID: memcg: Remove wrong ->attach callback
LSK-ANDROID: arm64: mm: Fix __create_pgd_mapping() call
ANDROID: sdcardfs: Move default_normal to superblock
blkdev: Refactoring block io latency histogram codes
FROMLIST: arm64: kpti: Fix the interaction between ASID switching and software PAN
FROMLIST: arm64: Move post_ttbr_update_workaround to C code
FROMLIST: arm64: mm: Rename post_ttbr0_update_workaround
sched: EAS: Initialize push_task as NULL to avoid direct reference on out_unlock path
fscrypt: updates on 4.15-rc4
ANDROID: uid_sys_stats: fix the comment
BACKPORT: tee: indicate privileged dev in gen_caps
BACKPORT: tee: optee: sync with new naming of interrupts
BACKPORT: tee: tee_shm: Constify dma_buf_ops structures.
BACKPORT: tee: optee: interruptible RPC sleep
BACKPORT: tee: optee: add const to tee_driver_ops and tee_desc structures
BACKPORT: tee.txt: standardize document format
BACKPORT: tee: add forward declaration for struct device
BACKPORT: tee: optee: fix uninitialized symbol 'parg'
BACKPORT: tee: add ARM_SMCCC dependency
BACKPORT: selinux: nlmsgtab: add SOCK_DESTROY to the netlink mapping tables
...
Conflicts:
arch/arm64/kernel/vdso.c
drivers/usb/host/xhci-plat.c
include/drm/drmP.h
include/linux/kasan.h
kernel/time/timekeeping.c
mm/kasan/kasan.c
security/selinux/nlmsgtab.c
Also add this commit:
0bcdc0987cce ("time: Fix ktime_get_raw() incorrect base accumulation")
Diffstat (limited to 'drivers/base')
-rw-r--r-- | drivers/base/Kconfig | 3 | ||||
-rw-r--r-- | drivers/base/cpu.c | 48 | ||||
-rw-r--r-- | drivers/base/isa.c | 10 |
3 files changed, 56 insertions, 5 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 98504ec99c7d..59992788966c 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -223,6 +223,9 @@ config GENERIC_CPU_DEVICES config GENERIC_CPU_AUTOPROBE bool +config GENERIC_CPU_VULNERABILITIES + bool + config SOC_BUS bool diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 91bbb1959d8d..3db71afbba93 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -498,10 +498,58 @@ static void __init cpu_dev_register_generic(void) #endif } +#ifdef CONFIG_GENERIC_CPU_VULNERABILITIES + +ssize_t __weak cpu_show_meltdown(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "Not affected\n"); +} + +ssize_t __weak cpu_show_spectre_v1(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "Not affected\n"); +} + +ssize_t __weak cpu_show_spectre_v2(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "Not affected\n"); +} + +static DEVICE_ATTR(meltdown, 0444, cpu_show_meltdown, NULL); +static DEVICE_ATTR(spectre_v1, 0444, cpu_show_spectre_v1, NULL); +static DEVICE_ATTR(spectre_v2, 0444, cpu_show_spectre_v2, NULL); + +static struct attribute *cpu_root_vulnerabilities_attrs[] = { + &dev_attr_meltdown.attr, + &dev_attr_spectre_v1.attr, + &dev_attr_spectre_v2.attr, + NULL +}; + +static const struct attribute_group cpu_root_vulnerabilities_group = { + .name = "vulnerabilities", + .attrs = cpu_root_vulnerabilities_attrs, +}; + +static void __init cpu_register_vulnerabilities(void) +{ + if (sysfs_create_group(&cpu_subsys.dev_root->kobj, + &cpu_root_vulnerabilities_group)) + pr_err("Unable to register CPU vulnerabilities\n"); +} + +#else +static inline void cpu_register_vulnerabilities(void) { } +#endif + void __init cpu_dev_init(void) { if (subsys_system_register(&cpu_subsys, cpu_root_attr_groups)) panic("Failed to register CPU subsystem"); cpu_dev_register_generic(); + cpu_register_vulnerabilities(); } diff --git a/drivers/base/isa.c b/drivers/base/isa.c index 91dba65d7264..901d8185309e 100644 --- a/drivers/base/isa.c +++ b/drivers/base/isa.c @@ -39,7 +39,7 @@ static int isa_bus_probe(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->probe) + if (isa_driver && isa_driver->probe) return isa_driver->probe(dev, to_isa_dev(dev)->id); return 0; @@ -49,7 +49,7 @@ static int isa_bus_remove(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->remove) + if (isa_driver && isa_driver->remove) return isa_driver->remove(dev, to_isa_dev(dev)->id); return 0; @@ -59,7 +59,7 @@ static void isa_bus_shutdown(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->shutdown) + if (isa_driver && isa_driver->shutdown) isa_driver->shutdown(dev, to_isa_dev(dev)->id); } @@ -67,7 +67,7 @@ static int isa_bus_suspend(struct device *dev, pm_message_t state) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->suspend) + if (isa_driver && isa_driver->suspend) return isa_driver->suspend(dev, to_isa_dev(dev)->id, state); return 0; @@ -77,7 +77,7 @@ static int isa_bus_resume(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->resume) + if (isa_driver && isa_driver->resume) return isa_driver->resume(dev, to_isa_dev(dev)->id); return 0; |