[PATCH] lib: sbi: Fix LLVM compile error observed in sbi_mpxy.c

[Anup Patel]

The following LLVM compile error is observed in sbi_mpxy.c:

 CC        lib/sbi/sbi_mpxy.o
lib/sbi/sbi_mpxy.c:535:36: error: result of comparison of constant 18446744073709551615 with
      expression of type 'u32' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare]
  535 |                     (attrs->msi_info.msi_addr_hi == INVALID_ADDR))
      |                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~
lib/sbi/sbi_mpxy.c:534:36: error: result of comparison of constant 18446744073709551615 with
      expression of type 'u32' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare]
  534 |                     (attrs->msi_info.msi_addr_lo == INVALID_ADDR) &&
      |                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~
2 errors generated.

To address the above issue, add u32 typecast to INVALID_ADDR.

Fixes: e92c8fd0836e ("sbi: mpxy: define INVALID_ADDR using unsigned long width")
Fixes: 7939bf1329eb ("lib: sbi: Add SBI Message Proxy (MPXY) framework")
Signed-off-by: Anup Patel <anup.patel at oss.qualcomm.com>
---
 lib/sbi/sbi_mpxy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/sbi/sbi_mpxy.c b/lib/sbi/sbi_mpxy.c
index 3e0e0af6..ff5c6ab6 100644
--- a/lib/sbi/sbi_mpxy.c
+++ b/lib/sbi/sbi_mpxy.c
@@ -531,8 +531,8 @@ static int mpxy_check_write_std_attr(struct sbi_mpxy_channel *channel,
 		if (attr_val > 1)
 			ret = SBI_ERR_INVALID_PARAM;
 		if (attr_val == 1 &&
-		    (attrs->msi_info.msi_addr_lo == INVALID_ADDR) &&
-		    (attrs->msi_info.msi_addr_hi == INVALID_ADDR))
+		    (attrs->msi_info.msi_addr_lo == (u32)INVALID_ADDR) &&
+		    (attrs->msi_info.msi_addr_hi == (u32)INVALID_ADDR))
 			ret = SBI_ERR_DENIED;
 		break;
 	case SBI_MPXY_ATTR_MSI_ADDR_LO:
-- 
2.43.0