[PATCH] sbi: mpxy: define INVALID_ADDR using unsigned long width

[Himanshu Chauhan]

INVALID_ADDR is used as an all-ones physical address sentinel.
Using -1U only guarantees 32-bit width, so on platforms where
unsigned long is wider it may not expand to all ones after assignment.

Use -1ULL so the conversion to unsigned long preserves an all-ones
bit pattern across supported widths.

Fixes: 7939bf1329eb ("lib: sbi: Add SBI Message Proxy (MPXY) framework")
Signed-off-by: Himanshu Chauhan <himanshu.chauhan at oss.qualcomm.com>
---
 lib/sbi/sbi_mpxy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sbi/sbi_mpxy.c b/lib/sbi/sbi_mpxy.c
index a83cf16c..79851097 100644
--- a/lib/sbi/sbi_mpxy.c
+++ b/lib/sbi/sbi_mpxy.c
@@ -28,7 +28,7 @@ static unsigned long mpxy_shmem_size = PAGE_SIZE;
 static SBI_LIST_HEAD(mpxy_channel_list);
 
 /** Invalid Physical Address(all bits 1) */
-#define INVALID_ADDR		(-1U)
+#define INVALID_ADDR		(-1ULL)
 
 /** MPXY Attribute size in bytes */
 #define ATTR_SIZE		(4)
-- 
2.43.0