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riscv: remove CONFIG_RISCV_ISA_A

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This option is always enabled, and not supporting the A extensions would
create a complete ABI trainwreck, so there is no point in even slightly
encouraging such an idea by keeping this unselectable code around.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Christoph Hellwig
2019-04-15 11:14:35 +02:00
committed by Palmer Dabbelt
parent e28dcc77e8
commit 09afac77b6
3 changed files with 3 additions and 21 deletions
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13
arch/riscv/include/asm/futex.h
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@@ -7,18 +7,6 @@
#ifndef _ASM_FUTEX_H
#define _ASM_FUTEX_H
#ifndef CONFIG_RISCV_ISA_A
/*
* Use the generic interrupt disabling versions if the A extension
* is not supported.
*/
#ifdef CONFIG_SMP
#error "Can't support generic futex calls without A extension on SMP"
#endif
#include <asm-generic/futex.h>
#else /* CONFIG_RISCV_ISA_A */
#include <linux/futex.h>
#include <linux/uaccess.h>
#include <linux/errno.h>
@@ -124,5 +112,4 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
return ret;
}
#endif /* CONFIG_RISCV_ISA_A */
#endif /* _ASM_FUTEX_H */