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)
44 lines
919 B
C
44 lines
919 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_MICROBLAZE_CMPXCHG_H
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#define _ASM_MICROBLAZE_CMPXCHG_H
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#include <linux/irqflags.h>
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void __bad_xchg(volatile void *ptr, int size);
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static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
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int size)
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{
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unsigned long ret;
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unsigned long flags;
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switch (size) {
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case 1:
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local_irq_save(flags);
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ret = *(volatile unsigned char *)ptr;
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*(volatile unsigned char *)ptr = x;
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local_irq_restore(flags);
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break;
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case 4:
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local_irq_save(flags);
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ret = *(volatile unsigned long *)ptr;
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*(volatile unsigned long *)ptr = x;
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local_irq_restore(flags);
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break;
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default:
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__bad_xchg(ptr, size), ret = 0;
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break;
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}
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return ret;
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}
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#define xchg(ptr, x) \
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((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
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#include <asm-generic/cmpxchg.h>
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#include <asm-generic/cmpxchg-local.h>
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#endif /* _ASM_MICROBLAZE_CMPXCHG_H */
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