[PATCH] acpi: fpdt: add a terminate for buggy BIOS that reports zero length

[Alex Hung]

On Supermicro's C7Q67, BIOS reports Performance Record Type 0 with
zero length and it causes fpdt test to run into infinite loop.  As
the data is considered corrupted, it is better to terminate the
test instead of checking others.

Signed-off-by: Alex Hung <alex.hung at canonical.com>
---
 src/acpi/fpdt/fpdt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/acpi/fpdt/fpdt.c b/src/acpi/fpdt/fpdt.c
index f5e4550..0d059be 100644
--- a/src/acpi/fpdt/fpdt.c
+++ b/src/acpi/fpdt/fpdt.c
@@ -203,6 +203,10 @@ static int fpdt_test1(fwts_framework *fw)
 			break;
 		}
 		ptr += fpdt->length;
+
+		/* terminate loop for buggy BIOS */
+		if (fpdt->length == 0)
+			break;
 	}
 
 done:
-- 
1.9.1