diff options
Diffstat (limited to 'drivers/base/devcoredump.c')
| -rw-r--r-- | drivers/base/devcoredump.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/base/devcoredump.c b/drivers/base/devcoredump.c index 7e2d1f0d903a..82aeb09b3d1b 100644 --- a/drivers/base/devcoredump.c +++ b/drivers/base/devcoredump.c @@ -305,6 +305,29 @@ static ssize_t devcd_read_from_sgtable(char *buffer, loff_t offset, } /** + * dev_coredump_put - remove device coredump + * @dev: the struct device for the crashed device + * + * dev_coredump_put() removes coredump, if exists, for a given device from + * the file system and free its associated data otherwise, does nothing. + * + * It is useful for modules that do not want to keep coredump + * available after its unload. + */ +void dev_coredump_put(struct device *dev) +{ + struct device *existing; + + existing = class_find_device(&devcd_class, NULL, dev, + devcd_match_failing); + if (existing) { + devcd_free(existing, NULL); + put_device(existing); + } +} +EXPORT_SYMBOL_GPL(dev_coredump_put); + +/** * dev_coredumpm - create device coredump with read/free methods * @dev: the struct device for the crashed device * @owner: the module that contains the read/free functions, use %THIS_MODULE |