[PATCH] acpi: mpst: fix potential infinite loop on 16 bit counter j

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

The 16 bit loop counter j is being compared to a 32 bit upper loop
bound, there is a theoretical bug where the upper bound is more
than 65535 and the will iterate forever.  Avoid this by making the
loop counter a 32 bit integer.

Addresses-Coverity: ("Infinite loop")
Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/acpi/mpst/mpst.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/acpi/mpst/mpst.c b/src/acpi/mpst/mpst.c
index e9632414..4bfe3179 100644
--- a/src/acpi/mpst/mpst.c
+++ b/src/acpi/mpst/mpst.c
@@ -47,7 +47,8 @@ static int mpst_test1(fwts_framework *fw)
 	bool passed = true;
 	uint32_t reserved;
 	uint32_t node_offset;
-	uint16_t i, j;
+	uint32_t j;
+	uint16_t i;
 
 	reserved = (uint32_t) mpst->reserved[0] +
 		   ((uint32_t) mpst->reserved[1] << 8) +
-- 
2.27.0