[PATCH 1/2] perf tools riscv: Allow get_cpuid return empty MARCH and MIMP

[Inochi Amaoto]

The T-HEAD C9xx series CPU only has MVENDOR defined, and left MARCH
and MIMP unimplemented.

To make perf support T-HEAD C9xx events. remove the restriction of
the MARCH and MIMP.

Signed-off-by: Inochi Amaoto <inochiama at outlook.com>
---
 tools/perf/arch/riscv/util/header.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/tools/perf/arch/riscv/util/header.c b/tools/perf/arch/riscv/util/header.c
index 4a41856938a8..031899c627f6 100644
--- a/tools/perf/arch/riscv/util/header.c
+++ b/tools/perf/arch/riscv/util/header.c
@@ -55,18 +55,13 @@ static char *_get_cpuid(void)
 				goto free;
 		} else if (!strncmp(line, CPUINFO_MARCH, strlen(CPUINFO_MARCH))) {
 			marchid = _get_field(line);
-			if (!marchid)
-				goto free;
 		} else if (!strncmp(line, CPUINFO_MIMP, strlen(CPUINFO_MIMP))) {
 			mimpid = _get_field(line);
-			if (!mimpid)
-				goto free;
-
 			break;
 		}
 	}
 
-	if (!mvendorid || !marchid || !mimpid)
+	if (!mvendorid)
 		goto free;
 
 	if (asprintf(&cpuid, "%s-%s-%s", mvendorid, marchid, mimpid) < 0)
-- 
2.40.1