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authorChen Gong <gong.chen@linux.intel.com>2011-05-16 10:58:57 -0700
committerTony Luck <tony.luck@intel.com>2011-05-16 11:04:51 -0700
commit8d38d74b648513dd8ed8bd2b67d899208ef4e09e (patch)
tree9746a4273b2ffb68a298ce038eb196f0f65452bb /drivers/acpi
parent693d92a1bbc9e42681c42ed190bd42b636ca876f (diff)
downloadlinux-8d38d74b648513dd8ed8bd2b67d899208ef4e09e.tar.bz2
pstore: fix one type of return value in pstore
the return type of function _read_ in pstore is size_t, but in the callback function of _read_, the logic doesn't consider it too much, which means if negative value (assuming error here) is returned, it will be converted to positive because of type casting. ssize_t is enough for this function. Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/apei/erst.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index d6cb0ff6988e..d5a89d067f98 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -929,7 +929,7 @@ static int erst_check_table(struct acpi_table_erst *erst_tab)
return 0;
}
-static size_t erst_reader(u64 *id, enum pstore_type_id *type,
+static ssize_t erst_reader(u64 *id, enum pstore_type_id *type,
struct timespec *time);
static u64 erst_writer(enum pstore_type_id type, size_t size);
@@ -957,7 +957,7 @@ struct cper_pstore_record {
char data[];
} __packed;
-static size_t erst_reader(u64 *id, enum pstore_type_id *type,
+static ssize_t erst_reader(u64 *id, enum pstore_type_id *type,
struct timespec *time)
{
int rc;