On 01/06/2014 07:50 PM, Rafael J. Wysocki wrote:
On Monday, January 06, 2014 04:47:59 PM Tang Chen wrote:
The comment about return value of acpi_table_parse() is incorrect.
This patch fix it.
Since all callers only check if the function succeeded or not, this
patch simplifies the semantics by returning -errno for all failure
cases. This will also simply the comment.
As suggested by Toshi Kani<toshi.kani@xxxxxx>, also change the stub
in linux/acpi.h to return -ENODEV.
Signed-off-by: Tang Chen<tangchen@xxxxxxxxxxxxxx>
Queued up for 3.14 (but please use the e-mail address from MAINTAINERS next
time) with a modified subject. Thanks!
OK, will use the email address from MAINTAINERS next time.
Thanks.
---
drivers/acpi/tables.c | 7 ++++---
include/linux/acpi.h | 2 +-
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 5a5263b..10022ae 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -278,12 +278,13 @@ acpi_table_parse_madt(enum acpi_madt_type id,
/**
* acpi_table_parse - find table with @id, run @handler on it
- *
* @id: table id to find
* @handler: handler to run
*
* Scan the ACPI System Descriptor Table (STD) for a table matching @id,
- * run @handler on it. Return 0 if table found, return on if not.
+ * run @handler on it.
+ *
+ * Return 0 if table found, -errno if not.
*/
int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
{
@@ -306,7 +307,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
early_acpi_os_unmap_memory(table, tbl_size);
return 0;
} else
- return 1;
+ return -ENODEV;
}
/*
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index d9099b1..fecfbcd 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -460,7 +460,7 @@ struct acpi_table_header;
static inline int acpi_table_parse(char *id,
int (*handler)(struct acpi_table_header *))
{
- return -1;
+ return -ENODEV;
}
static inline int acpi_nvs_register(__u64 start, __u64 size)
--
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