threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
55 lines
1.0 KiB
C
55 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_SH_CMPXCHG_IRQ_H
|
|
#define __ASM_SH_CMPXCHG_IRQ_H
|
|
|
|
#include <linux/irqflags.h>
|
|
|
|
static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
|
|
{
|
|
unsigned long flags, retval;
|
|
|
|
local_irq_save(flags);
|
|
retval = *m;
|
|
*m = val;
|
|
local_irq_restore(flags);
|
|
return retval;
|
|
}
|
|
|
|
static inline unsigned long xchg_u16(volatile u16 *m, unsigned long val)
|
|
{
|
|
unsigned long flags, retval;
|
|
|
|
local_irq_save(flags);
|
|
retval = *m;
|
|
*m = val;
|
|
local_irq_restore(flags);
|
|
return retval;
|
|
}
|
|
|
|
static inline unsigned long xchg_u8(volatile u8 *m, unsigned long val)
|
|
{
|
|
unsigned long flags, retval;
|
|
|
|
local_irq_save(flags);
|
|
retval = *m;
|
|
*m = val & 0xff;
|
|
local_irq_restore(flags);
|
|
return retval;
|
|
}
|
|
|
|
static inline unsigned long __cmpxchg_u32(volatile int *m, unsigned long old,
|
|
unsigned long new)
|
|
{
|
|
__u32 retval;
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
retval = *m;
|
|
if (retval == old)
|
|
*m = new;
|
|
local_irq_restore(flags); /* implies memory barrier */
|
|
return retval;
|
|
}
|
|
|
|
#endif /* __ASM_SH_CMPXCHG_IRQ_H */
|