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crypto: hisilicon/qm: Fix to enable build with RISC-V clang

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With CONFIG_ACPI enabled for RISC-V, this driver gets enabled in
allmodconfig build. However, build fails with clang and below
error is seen.

drivers/crypto/hisilicon/qm.c:627:10: error: invalid output constraint '+Q' in asm
                       "+Q" (*((char __iomem *)fun_base))
                       ^
This is expected error with clang due to the way it is designed.

To fix this issue, move arm64 assembly code under #if.

Link: https://github.com/ClangBuiltLinux/linux/issues/999
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
[sunilvl@ventanamicro.com: Moved tmp0 and tmp1 into the #if]
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/20230515054928.2079268-4-sunilvl@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Sunil V L 2023-05-15 11:19:10 +05:30 committed by Palmer Dabbelt
parent 7f2e20459b
commit fbb995a7b2
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GPG Key ID: 2E1319F35FBB1889
1 changed files with 5 additions and 0 deletions
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5
drivers/crypto/hisilicon/qm.c
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@ -610,7 +610,10 @@ EXPORT_SYMBOL_GPL(hisi_qm_wait_mb_ready);
static void qm_mb_write(struct hisi_qm *qm, const void *src)
{
void __iomem *fun_base = qm->io_base + QM_MB_CMD_SEND_BASE;
#if IS_ENABLED(CONFIG_ARM64)
unsigned long tmp0 = 0, tmp1 = 0;
#endif
if (!IS_ENABLED(CONFIG_ARM64)) {
memcpy_toio(fun_base, src, 16);
@ -618,6 +621,7 @@ static void qm_mb_write(struct hisi_qm *qm, const void *src)
return;
}
#if IS_ENABLED(CONFIG_ARM64)
asm volatile("ldp %0, %1, %3\n"
"stp %0, %1, %2\n"
"dmb oshst\n"
@ -626,6 +630,7 @@ static void qm_mb_write(struct hisi_qm *qm, const void *src)
"+Q" (*((char __iomem *)fun_base))
: "Q" (*((char *)src))
: "memory");
#endif
}
static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox)