[PATCH V3 01/10] arm/gic-v3: Use acpi_table_parse_madt() to parse MADT subtables

[Shanker Donthineni <shankerd@codeaurora.org>]

The function acpi_table_parse_madt() does the same functionality as
function acpi_parse_entries() expect it takes a few arguments.

Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
---
 xen/arch/arm/gic-v3.c | 27 ++++++---------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index 8d3f149..166f1c1 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -1390,28 +1390,15 @@ gic_acpi_get_madt_redistributor_num(struct acpi_subtable_header *header,
 
 static void __init gicv3_acpi_init(void)
 {
-    struct acpi_table_header *table;
     struct rdist_region *rdist_regs;
-    acpi_status status;
     int count, i;
 
-    status = acpi_get_table(ACPI_SIG_MADT, 0, &table);
-
-    if ( ACPI_FAILURE(status) )
-    {
-        const char *msg = acpi_format_exception(status);
-
-        panic("GICv3: Failed to get MADT table, %s", msg);
-    }
-
     /*
      * Find distributor base address. We expect one distributor entry since
      * ACPI 5.0 spec neither support multi-GIC instances nor GIC cascade.
      */
-    count = acpi_parse_entries(ACPI_SIG_MADT, sizeof(struct acpi_table_madt),
-                               gic_acpi_parse_madt_distributor, table,
-                               ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, 0);
-
+    count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR,
+                                  gic_acpi_parse_madt_distributor, 0);
     if ( count <= 0 )
         panic("GICv3: No valid GICD entries exists");
 
@@ -1420,9 +1407,8 @@ static void __init gicv3_acpi_init(void)
               dbase);
 
     /* Get number of redistributor */
-    count = acpi_parse_entries(ACPI_SIG_MADT, sizeof(struct acpi_table_madt),
-                               gic_acpi_get_madt_redistributor_num, table,
-                               ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR, 0);
+    count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR,
+                                  gic_acpi_get_madt_redistributor_num, 0);
     if ( count <= 0 )
         panic("GICv3: No valid GICR entries exists");
 
@@ -1458,9 +1444,8 @@ static void __init gicv3_acpi_init(void)
     gicv3.rdist_regions= rdist_regs;
 
     /* Collect CPU base addresses */
-    count = acpi_parse_entries(ACPI_SIG_MADT, sizeof(struct acpi_table_madt),
-                               gic_acpi_parse_madt_cpu, table,
-                               ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0);
+    count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+                                  gic_acpi_parse_madt_cpu, 0);
     if ( count <= 0 )
         panic("GICv3: No valid GICC entries exists");
 
-- 
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, 
a Linux Foundation Collaborative Project


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