diff options
Diffstat (limited to 'drivers/char/tpm/tpm_of.c')
| -rw-r--r-- | drivers/char/tpm/tpm_of.c | 29 |
1 files changed, 9 insertions, 20 deletions
diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c index 12a86dda3b69..643cc8ccb35b 100644 --- a/drivers/char/tpm/tpm_of.c +++ b/drivers/char/tpm/tpm_of.c @@ -31,40 +31,29 @@ int tpm_read_log_of(struct tpm_chip *chip) log = &chip->log; if (chip->dev.parent->of_node) np = chip->dev.parent->of_node; - if (!np) { - pr_err("%s: ERROR - IBMVTPM not supported\n", __func__); + if (!np) return -ENODEV; - } sizep = of_get_property(np, "linux,sml-size", NULL); - if (sizep == NULL) { - pr_err("%s: ERROR - SML size not found\n", __func__); - goto cleanup_eio; - } + if (sizep == NULL) + return -EIO; + if (*sizep == 0) { - pr_err("%s: ERROR - event log area empty\n", __func__); - goto cleanup_eio; + dev_warn(&chip->dev, "%s: Event log area empty\n", __func__); + return -EIO; } basep = of_get_property(np, "linux,sml-base", NULL); - if (basep == NULL) { - pr_err("%s: ERROR - SML not found\n", __func__); - goto cleanup_eio; - } + if (basep == NULL) + return -EIO; log->bios_event_log = kmalloc(*sizep, GFP_KERNEL); - if (!log->bios_event_log) { - pr_err("%s: ERROR - Not enough memory for BIOS measurements\n", - __func__); + if (!log->bios_event_log) return -ENOMEM; - } log->bios_event_log_end = log->bios_event_log + *sizep; memcpy(log->bios_event_log, __va(*basep), *sizep); return 0; - -cleanup_eio: - return -EIO; } |