pstore: make pstore write function return normal success/fail value
Currently pstore write interface employs record id as return
value, but it is not enough because it can't tell caller if
the write operation is successful. Pass the record id back via
an argument pointer and return zero for success, non-zero for
failure.
Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index be8bcb0..8370f72 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -490,8 +490,8 @@
return 0;
}
-static u64 efi_pstore_write(enum pstore_type_id type, unsigned int part,
- size_t size, struct pstore_info *psi)
+static int efi_pstore_write(enum pstore_type_id type, u64 *id,
+ unsigned int part, size_t size, struct pstore_info *psi)
{
char name[DUMP_NAME_LEN];
char stub_name[DUMP_NAME_LEN];
@@ -499,7 +499,7 @@
efi_guid_t vendor = LINUX_EFI_CRASH_GUID;
struct efivars *efivars = psi->data;
struct efivar_entry *entry, *found = NULL;
- int i;
+ int i, ret = 0;
sprintf(stub_name, "dump-type%u-%u-", type, part);
sprintf(name, "%s%lu", stub_name, get_seconds());
@@ -548,18 +548,19 @@
efivar_unregister(found);
if (size)
- efivar_create_sysfs_entry(efivars,
+ ret = efivar_create_sysfs_entry(efivars,
utf16_strsize(efi_name,
DUMP_NAME_LEN * 2),
efi_name, &vendor);
- return part;
+ *id = part;
+ return ret;
};
static int efi_pstore_erase(enum pstore_type_id type, u64 id,
struct pstore_info *psi)
{
- efi_pstore_write(type, id, 0, psi);
+ efi_pstore_write(type, &id, (unsigned int)id, 0, psi);
return 0;
}
@@ -580,8 +581,8 @@
return -1;
}
-static u64 efi_pstore_write(enum pstore_type_id type, unsigned int part,
- size_t size, struct pstore_info *psi)
+static int efi_pstore_write(enum pstore_type_id type, u64 *id,
+ unsigned int part, size_t size, struct pstore_info *psi)
{
return 0;
}