From: Tomasz Nowicki tomasz.nowicki@linaro.org
It is very useful to traverse all available table entries without max number of expected entries type. Current acpi_parse_entries() implementation gives that feature but it does not count those entries, it returns 0 instead, so fix it to count matched and successfully entries and return it.
NOTE: This change has no impact to x86 and ia64 archs since existing code checks for error occurrence only (acpi_parse_entries(...,0) < 0).
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 --- drivers/acpi/tables.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 21ae521..b18e45e 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -225,10 +225,13 @@ acpi_parse_entries(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.