Commit 0d7cd09a authored by Kees Cook's avatar Kees Cook

pstore: Improve register_pstore() error reporting

Uncommon errors are better to get reported to dmesg so developers can
more easily figure out why pstore is unhappy with a backend attempting
to register.
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
parent 1344dd86
...@@ -673,11 +673,15 @@ int pstore_register(struct pstore_info *psi) ...@@ -673,11 +673,15 @@ int pstore_register(struct pstore_info *psi)
{ {
struct module *owner = psi->owner; struct module *owner = psi->owner;
if (backend && strcmp(backend, psi->name)) if (backend && strcmp(backend, psi->name)) {
pr_warn("ignoring unexpected backend '%s'\n", psi->name);
return -EPERM; return -EPERM;
}
spin_lock(&pstore_lock); spin_lock(&pstore_lock);
if (psinfo) { if (psinfo) {
pr_warn("backend '%s' already loaded: ignoring '%s'\n",
psinfo->name, psi->name);
spin_unlock(&pstore_lock); spin_unlock(&pstore_lock);
return -EBUSY; return -EBUSY;
} }
......
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