linux-kernel - [PATCH v10 08/12] RISC-V: Export SBI error to linux error mapping function

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Date:   Wed, 26 Feb 2020 14:02:09 -0800
From:   Atish Patra <atish.patra@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Atish Patra <atish.patra@....com>, Anup Patel <anup.patel@....com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Alexios Zavras <alexios.zavras@...el.com>,
        Anup Patel <anup@...infault.org>, Borislav Petkov <bp@...e.de>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Gary Guo <gary@...yguo.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greentime Hu <greentime.hu@...ive.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Jason Cooper <jason@...edaemon.net>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Kees Cook <keescook@...omium.org>,
        linux-riscv@...ts.infradead.org,
        Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
        Mao Han <han_mao@...ky.com>, Marc Zyngier <maz@...nel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Nick Hu <nickhu@...estech.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Steven Price <steven.price@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vincent Chen <vincent.chen@...ive.com>,
        Zong Li <zong.li@...ive.com>
Subject: [PATCH v10 08/12] RISC-V: Export SBI error to linux error mapping function

All SBI related extensions will not be implemented in sbi.c to avoid
bloating. Thus, sbi_err_map_linux_errno() will be used in other files
implementing that specific extension.

Export the function so that it can be used later.

Signed-off-by: Atish Patra <atish.patra@....com>
Reviewed-by: Anup Patel <anup.patel@....com>
---
 arch/riscv/include/asm/sbi.h | 1 +
 arch/riscv/kernel/sbi.c      | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 8766f6af9eb8..82ff88f06ddc 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -130,6 +130,7 @@ static inline unsigned long sbi_minor_version(void)
 {
 	return sbi_spec_version & SBI_SPEC_VERSION_MINOR_MASK;
 }
+int sbi_err_map_linux_errno(int err);
 #else /* CONFIG_RISCV_SBI */
 /* stubs for code that is only reachable under IS_ENABLED(CONFIG_RISCV_SBI): */
 void sbi_set_timer(uint64_t stime_value);
diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c
index 932b23272be5..3a2a5352316b 100644
--- a/arch/riscv/kernel/sbi.c
+++ b/arch/riscv/kernel/sbi.c
@@ -46,7 +46,7 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
 }
 EXPORT_SYMBOL(sbi_ecall);
 
-static int sbi_err_map_linux_errno(int err)
+int sbi_err_map_linux_errno(int err)
 {
 	switch (err) {
 	case SBI_SUCCESS:
@@ -63,6 +63,7 @@ static int sbi_err_map_linux_errno(int err)
 		return -ENOTSUPP;
 	};
 }
+EXPORT_SYMBOL(sbi_err_map_linux_errno);
 
 #ifdef CONFIG_RISCV_SBI_V01
 /**
-- 
2.25.0