pstore: add lzo/lz4 compression support

[cascardo/linux.git] / drivers / firmware / efi / efi-pstore.c

diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index eac76a7..d5903ea 100644 (file)
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -34,6 +34,7 @@ struct pstore_read_data {
        int *count;
        struct timespec *timespec;
        bool *compressed;
+       ssize_t *ecc_notice_size;
        char **buf;
 };
 
@@ -69,6 +70,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data)
                        *cb_data->compressed = true;
                else
                        *cb_data->compressed = false;
+               *cb_data->ecc_notice_size = 0;
        } else if (sscanf(name, "dump-type%u-%u-%d-%lu",
                   cb_data->type, &part, &cnt, &time) == 4) {
                *cb_data->id = generic_id(time, part, cnt);
@@ -76,6 +78,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data)
                cb_data->timespec->tv_sec = time;
                cb_data->timespec->tv_nsec = 0;
                *cb_data->compressed = false;
+               *cb_data->ecc_notice_size = 0;
        } else if (sscanf(name, "dump-type%u-%u-%lu",
                          cb_data->type, &part, &time) == 3) {
                /*
@@ -88,6 +91,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data)
                cb_data->timespec->tv_sec = time;
                cb_data->timespec->tv_nsec = 0;
                *cb_data->compressed = false;
+               *cb_data->ecc_notice_size = 0;
        } else
                return 0;
 
@@ -210,6 +214,7 @@ static int efi_pstore_sysfs_entry_iter(void *data, struct efivar_entry **pos)
 static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
                               int *count, struct timespec *timespec,
                               char **buf, bool *compressed,
+                              ssize_t *ecc_notice_size,
                               struct pstore_info *psi)
 {
        struct pstore_read_data data;
@@ -220,6 +225,7 @@ static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
        data.count = count;
        data.timespec = timespec;
        data.compressed = compressed;
+       data.ecc_notice_size = ecc_notice_size;
        data.buf = buf;
 
        *data.buf = kzalloc(EFIVARS_DATA_SIZE_MAX, GFP_KERNEL);