diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-08-26 01:36:07 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-08-26 01:36:07 +0200 |
| commit | ceb2465c51195967f11f6507538579816ac67cb8 (patch) | |
| tree | eab534b1062608e36a7b54ccc7be693625f235b8 /include/linux/uaccess.h | |
| parent | f107cee94ba4d2c7357fde59a1d84346c73d4958 (diff) | |
| parent | 821fc9e261f3af235752f46e59084467cfd440c4 (diff) | |
Merge tag 'irqchip-fixes-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Revert the wholesale conversion to platform drivers of the pdc, sysirq
and cirq drivers, as it breaks a number of platforms even when the
driver is built-in (probe ordering bites you).
- Prevent interrupt from being lost with the STM32 exti driver
- Fix wake-up interrupts for the MIPS Ingenic driver
- Fix an embarassing typo in the new module helpers, leading to the probe
failing most of the time
- The promised TI firmware rework that couldn't make it into the merge
window due to a very badly managed set of dependencies
Diffstat (limited to 'include/linux/uaccess.h')
| -rw-r--r-- | include/linux/uaccess.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index 0a76ddc07d59..94b285411659 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -6,11 +6,27 @@ #include <linux/sched.h> #include <linux/thread_info.h> -#define uaccess_kernel() segment_eq(get_fs(), KERNEL_DS) - #include <asm/uaccess.h> /* + * Force the uaccess routines to be wired up for actual userspace access, + * overriding any possible set_fs(KERNEL_DS) still lingering around. Undone + * using force_uaccess_end below. + */ +static inline mm_segment_t force_uaccess_begin(void) +{ + mm_segment_t fs = get_fs(); + + set_fs(USER_DS); + return fs; +} + +static inline void force_uaccess_end(mm_segment_t oldfs) +{ + set_fs(oldfs); +} + +/* * Architectures should provide two primitives (raw_copy_{to,from}_user()) * and get rid of their private instances of copy_{to,from}_user() and * __copy_{to,from}_user{,_inatomic}(). |