[Skiboot] [PATCH 06/12] core/hmi: Fix use of uninitialised value (CID 147808)

[Cyril Bur]

A rework of where some of the xscom regs are for POWER9 has resulted in
a scope issue where the same line attempts to simultaneously reference a
variable by the same name in global and function scope.

Change the value read by xscom_read to *_val

Fixes: CID 147808
Fixes: bda5e0ea Fix scom addresses for power9 nx checkstop hmi handling.
Signed-off-by: Cyril Bur <cyril.bur at au1.ibm.com>
---
 core/hmi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/core/hmi.c b/core/hmi.c
index 8b229eb7..c1769e3c 100644
--- a/core/hmi.c
+++ b/core/hmi.c
@@ -450,7 +450,7 @@ static void find_nx_checkstop_reason(int flat_chip_id,
 {
 	uint64_t nx_status;
 	uint64_t nx_dma_fir;
-	uint64_t nx_pbi_fir;
+	uint64_t nx_pbi_fir_val;
 	int i;
 
 	/* Get NX status register value. */
@@ -476,7 +476,7 @@ static void find_nx_checkstop_reason(int flat_chip_id,
 	}
 
 	/* Get PowerBus Interface FIR data register value. */
-	if (xscom_read(flat_chip_id, nx_pbi_fir, &nx_pbi_fir) != 0) {
+	if (xscom_read(flat_chip_id, nx_pbi_fir, &nx_pbi_fir_val) != 0) {
 		prerror("HMI: XSCOM error reading NX_PBI_FIR\n");
 		return;
 	}
@@ -488,7 +488,7 @@ static void find_nx_checkstop_reason(int flat_chip_id,
 						|= nx_dma_xstop_bits[i].reason;
 
 	for (i = 0; i < ARRAY_SIZE(nx_pbi_xstop_bits); i++)
-		if (nx_pbi_fir & PPC_BIT(nx_pbi_xstop_bits[i].bit))
+		if (nx_pbi_fir_val & PPC_BIT(nx_pbi_xstop_bits[i].bit))
 			hmi_evt->u.xstop_error.xstop_reason
 						|= nx_pbi_xstop_bits[i].reason;
 
-- 
2.13.3