diff options
| author |   Chen Gong <gong.chen@linux.intel.com> | 2011-05-16 10:58:57 -0700 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2011-05-16 11:04:51 -0700 |
| commit | 8d38d74b648513dd8ed8bd2b67d899208ef4e09e (patch) | |
| tree | 9746a4273b2ffb68a298ce038eb196f0f65452bb | |
| parent | Linux 2.6.39-rc7 (diff) | |
| download | linux-dev-8d38d74b648513dd8ed8bd2b67d899208ef4e09e.tar.xz linux-dev-8d38d74b648513dd8ed8bd2b67d899208ef4e09e.zip | |
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>
| -rw-r--r-- | drivers/acpi/apei/erst.c | 4 | ||||
| -rw-r--r-- | fs/pstore/platform.c | 4 | ||||
| -rw-r--r-- | include/linux/pstore.h | 2 |
3 files changed, 5 insertions, 5 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; diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index f835a25625ff..912403c2a93d 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -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++; } diff --git a/include/linux/pstore.h b/include/linux/pstore.h index 41977737bb7d..14ce2f5d08af 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -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); |