[PATCH V2 2/6] riscv: Factor out environment variable check and report generation

[cem@kernel.org <cem@kernel.org>]

From: Carlos Maiolino <cem@kernel.org>

We do check Environment variables and generate reports all the time,
so use a couple of helpers for that

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
---

V2:
	- Rename env_is_defined() to env_or_skip()
	- Add information about gen_report() in the commit message
	- PROBE_EXT is not mandatory, so we don't need to pass it to
	  env_or_skip().

 riscv/sbi.c | 38 +++++++++++++++++++++++---------------
 1 file changed, 23 insertions(+), 15 deletions(-)

diff --git a/riscv/sbi.c b/riscv/sbi.c
index 1d73d8f1..519fcbe3 100644
--- a/riscv/sbi.c
+++ b/riscv/sbi.c
@@ -14,6 +14,23 @@ static void help(void)
 	puts("An environ must be provided where expected values are given.\n");
 }
 
+static bool env_or_skip(const char *env)
+{
+
+	if (!getenv(env)) {
+		report_skip("missing %s environment variable", env);
+		return false;
+	}
+
+	return true;
+}
+
+static void gen_report(struct sbiret *ret, long expected)
+{
+	report(!ret->error, "no sbi.error");
+	report(ret->value == expected, "expected sbi.value");
+}
+
 static void check_base(void)
 {
 	struct sbiret ret;
@@ -21,27 +38,18 @@ static void check_base(void)
 
 	report_prefix_push("base");
 
-	if (!getenv("MVENDORID")) {
-		report_skip("mvendorid: missing MVENDORID environment variable");
-		return;
-	}
-
 	report_prefix_push("mvendorid");
-	expected = strtol(getenv("MVENDORID"), NULL, 0);
-
-	ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MVENDORID, 0, 0, 0, 0, 0, 0);
-
-	report(!ret.error, "no sbi.error");
-	report(ret.value == expected, "expected sbi.value");
+	if (env_or_skip("MVENDORID")) {
+		expected = strtol(getenv("MVENDORID"), NULL, 0);
+		ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MVENDORID, 0, 0, 0, 0, 0, 0);
+		gen_report(&ret, expected);
+	}
 	report_prefix_pop();
 
 	report_prefix_push("probe_ext");
 	expected = getenv("PROBE_EXT") ? strtol(getenv("PROBE_EXT"), NULL, 0) : 1;
-
 	ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT, SBI_EXT_BASE, 0, 0, 0, 0, 0);
-
-	report(!ret.error, "no sbi.error");
-	report(ret.value == expected, "expected sbi.value");
+	gen_report(&ret, expected);
 	report_prefix_pop();
 
 	report_prefix_pop();
-- 
2.44.0