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authorTomasz Nowicki <tomasz.nowicki@linaro.org>2014-11-26 22:01:14 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-11-27 02:07:41 +0100
commit4ceacd02f5a1795c5c697e0345ee10beef675290 (patch)
tree168a8638a12acff9ee059fcfd24818d4df17393f /drivers/acpi/tables.c
parentf08bb472bff3c0397fb7d6f47bc5cec41dad76e3 (diff)
downloadlinux-4ceacd02f5a1795c5c697e0345ee10beef675290.tar.bz2
ACPI / table: Always count matched and successfully parsed entries
acpi_parse_entries() allows to traverse all available table entries (aka subtables) by passing max_entries parameter equal to 0, but since its count variable is only incremented if max_entries is not 0, the function always returns 0 for max_entries equal to 0. It would be more useful if it returned the number of entries matched instead, so make it increment count in that case too. Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/tables.c')
-rw-r--r--drivers/acpi/tables.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index f1debe97dcfc..93b81523a2fe 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -224,10 +224,13 @@ acpi_parse_entries(char *id, unsigned long table_size,
while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
table_end) {
if (entry->type == entry_id
- && (!max_entries || count++ < max_entries))
+ && (!max_entries || count < max_entries)) {
if (handler(entry, table_end))
return -EINVAL;
+ count++;
+ }
+
/*
* If entry->length is 0, break from this loop to avoid
* infinite loop.