[PATCH v2 4/8] RISC-V: Allow hartid-to-cpuid function to fail.

Atish Patra
2019-01-08T09:39:16Z

It is perfectly okay to call riscv_hartid_to_cpuid for a
hartid that is not mapped with an CPU id. It can happen
if the calling functions retrieves the hartid from DT.
However, that hartid was never brought online by the firmware
or kernel for any reasons.

No need to BUG() in the above case. A negative error return
is sufficient and the calling function should check for the
return value always.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
---
arch/riscv/kernel/smp.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index e407bd4f..ce9a2e73 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -58,7 +58,6 @@ int riscv_hartid_to_cpuid(int hartid)
return i;

pr_err("Couldn't find cpu id for hartid [%d]\n", hartid);
- BUG();
return i;
}

--
2.7.4