diff options
Diffstat (limited to 'drivers/char/tpm/eventlog/acpi.c')
| -rw-r--r-- | drivers/char/tpm/eventlog/acpi.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/char/tpm/eventlog/acpi.c b/drivers/char/tpm/eventlog/acpi.c index cd266021d010..1a5644051d31 100644 --- a/drivers/char/tpm/eventlog/acpi.c +++ b/drivers/char/tpm/eventlog/acpi.c @@ -14,6 +14,7 @@ * Access to the event log extended by the TCG BIOS of PC platform */ +#include <linux/device.h> #include <linux/seq_file.h> #include <linux/fs.h> #include <linux/security.h> @@ -62,6 +63,11 @@ static bool tpm_is_tpm2_log(void *bios_event_log, u64 len) return n == 0; } +static void tpm_bios_log_free(void *data) +{ + kvfree(data); +} + /* read binary bios log */ int tpm_read_log_acpi(struct tpm_chip *chip) { @@ -135,7 +141,7 @@ int tpm_read_log_acpi(struct tpm_chip *chip) } /* malloc EventLog space */ - log->bios_event_log = kmalloc(len, GFP_KERNEL); + log->bios_event_log = kvmalloc(len, GFP_KERNEL); if (!log->bios_event_log) return -ENOMEM; @@ -161,10 +167,16 @@ int tpm_read_log_acpi(struct tpm_chip *chip) goto err; } + ret = devm_add_action(&chip->dev, tpm_bios_log_free, log->bios_event_log); + if (ret) { + log->bios_event_log = NULL; + goto err; + } + return format; err: - kfree(log->bios_event_log); + tpm_bios_log_free(log->bios_event_log); log->bios_event_log = NULL; return ret; } |