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authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-26 18:48:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-26 18:48:23 -0700
commit1b3fc0bef8859268d542230172f80e85553fdab4 (patch)
treedca6ce8a7f2722a8d04e2c3c604cc10871c2f489 /drivers/firmware
parentd31dcd92473b26463cd804410174f16be8a02573 (diff)
parent74e630a7582e6b3cb39559d712a0049f08dea8a0 (diff)
Merge tag 'pstore-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore subsystem updates from Kees Cook: "This expands the supported compressors, fixes some bugs, and finally adds DT bindings" * tag 'pstore-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: pstore/ram: add Device Tree bindings efi-pstore: implement efivars_pstore_exit() pstore: drop file opened reference count pstore: add lzo/lz4 compression support pstore: Cleanup pstore_dump() pstore: Enable compression on normal path (again) ramoops: Only unregister when registered
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/efi-pstore.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index eac76a79a880..30a24d09ea6c 100644
--- 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);
@@ -393,6 +399,13 @@ static __init int efivars_pstore_init(void)
static __exit void efivars_pstore_exit(void)
{
+ if (!efi_pstore_info.bufsize)
+ return;
+
+ pstore_unregister(&efi_pstore_info);
+ kfree(efi_pstore_info.buf);
+ efi_pstore_info.buf = NULL;
+ efi_pstore_info.bufsize = 0;
}
module_init(efivars_pstore_init);