pstore: Extend API for more flexibility in new backends
Some pstore implementations may not have a static context, so extend the
API to pass the pstore_info struct to all calls and allow for a context
pointer.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index e6cef8e..de3ae92 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -932,8 +932,10 @@
static int erst_open_pstore(struct pstore_info *psi);
static int erst_close_pstore(struct pstore_info *psi);
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);
+ struct timespec *time, struct pstore_info *psi);
+static u64 erst_writer(enum pstore_type_id type, size_t size,
+ struct pstore_info *psi);
+static int erst_clearer(u64 id, struct pstore_info *psi);
static struct pstore_info erst_info = {
.owner = THIS_MODULE,
@@ -942,7 +944,7 @@
.close = erst_close_pstore,
.read = erst_reader,
.write = erst_writer,
- .erase = erst_clear
+ .erase = erst_clearer
};
#define CPER_CREATOR_PSTORE \
@@ -983,7 +985,7 @@
}
static ssize_t erst_reader(u64 *id, enum pstore_type_id *type,
- struct timespec *time)
+ struct timespec *time, struct pstore_info *psi)
{
int rc;
ssize_t len = 0;
@@ -1037,7 +1039,8 @@
return (rc < 0) ? rc : (len - sizeof(*rcd));
}
-static u64 erst_writer(enum pstore_type_id type, size_t size)
+static u64 erst_writer(enum pstore_type_id type, size_t size,
+ struct pstore_info *psi)
{
struct cper_pstore_record *rcd = (struct cper_pstore_record *)
(erst_info.buf - sizeof(*rcd));
@@ -1080,6 +1083,11 @@
return rcd->hdr.record_id;
}
+static int erst_clearer(u64 id, struct pstore_info *psi)
+{
+ return erst_clear(id);
+}
+
static int __init erst_init(void)
{
int rc = 0;