ACPI / table: Replace '1' with specific error return values

After commit 7f8f97c3cc (ACPI: acpi_table_parse() now returns
success/fail, not count), acpi_table_parse() returns '1' when it is
unable to find the table, but it should return a negative error code
in that case.  Make it return -ENODEV instead.

Fix the same problem in acpi_table_init() analogously.

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[Linux commit 95df812dbdc350bfcf31e247e9100c378a472480]
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>

diff --git a/xen/drivers/acpi/tables.c b/xen/drivers/acpi/tables.c
index 6085fda847a05acd70eb3a75833da65d8ecd3107..60c4ab1d3aa333756449a48e194c896108a145c1 100644 (file)
--- a/xen/drivers/acpi/tables.c
+++ b/xen/drivers/acpi/tables.c
@@ -290,7 +290,7 @@ int __init acpi_table_parse(char *id, acpi_table_handler handler)
        if (table) {
                return handler(table);
        } else
-               return 1;
+               return -ENODEV;
 }
 
 /* 
@@ -333,7 +333,7 @@ int __init acpi_table_init(void)
 
        status = acpi_initialize_tables(NULL, ACPI_MAX_TABLES, 0);
        if (ACPI_FAILURE(status))
-               return 1;
+               return -EINVAL;
 
        check_multiple_madt();
        return 0;