Commit 8d38d74b authored by Chen Gong's avatar Chen Gong Committed by Tony Luck

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: default avatarChen Gong <gong.chen@linux.intel.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 693d92a1
......@@ -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;
......
......@@ -152,7 +152,7 @@ EXPORT_SYMBOL_GPL(pstore_register);
void pstore_get_records(void)
{
struct pstore_info *psi = psinfo;
size_t size;
ssize_t size;
u64 id;
enum pstore_type_id type;
struct timespec time;
......@@ -163,7 +163,7 @@ void pstore_get_records(void)
mutex_lock(&psinfo->buf_mutex);
while ((size = psi->read(&id, &type, &time)) > 0) {
if (pstore_mkfile(type, psi->name, id, psi->buf, size,
if (pstore_mkfile(type, psi->name, id, psi->buf, (size_t)size,
time, psi->erase))
failed++;
}
......
......@@ -35,7 +35,7 @@ struct pstore_info {
struct mutex buf_mutex; /* serialize access to 'buf' */
char *buf;
size_t bufsize;
size_t (*read)(u64 *id, enum pstore_type_id *type,
ssize_t (*read)(u64 *id, enum pstore_type_id *type,
struct timespec *time);
u64 (*write)(enum pstore_type_id type, size_t size);
int (*erase)(u64 id);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment