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path: root/drivers/char/tpm/tpm_bios.c
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Diffstat (limited to 'drivers/char/tpm/tpm_bios.c')
-rw-r--r--drivers/char/tpm/tpm_bios.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index aedf7a8e6da..537aa45d8c6 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -191,7 +191,7 @@ static int get_event_name(char *dest, struct tcpa_event *event,
const char *name = "";
char data[40] = "";
int i, n_len = 0, d_len = 0;
- u32 event_id, event_data_size;
+ u32 event_id;
switch(event->event_type) {
case PREBOOT:
@@ -220,8 +220,7 @@ static int get_event_name(char *dest, struct tcpa_event *event,
}
break;
case EVENT_TAG:
- event_id = be32_to_cpu(event_entry);
- event_data_size = be32_to_cpu(&event_entry[4]);
+ event_id = be32_to_cpu(*((u32 *)event_entry));
/* ToDo Row data -> Base64 */
@@ -376,7 +375,7 @@ static int read_log(struct tpm_bios_log *log)
{
struct acpi_tcpa *buff;
acpi_status status;
- void *virt;
+ struct acpi_table_header *virt;
if (log->bios_event_log != NULL) {
printk(KERN_ERR
@@ -413,7 +412,7 @@ static int read_log(struct tpm_bios_log *log)
log->bios_event_log_end = log->bios_event_log + buff->log_max_len;
- acpi_os_map_memory(buff->log_start_addr, buff->log_max_len, &virt);
+ acpi_os_map_memory(buff->log_start_addr, buff->log_max_len, (void *) &virt);
memcpy(log->bios_event_log, virt, buff->log_max_len);
@@ -487,26 +486,35 @@ struct file_operations tpm_binary_bios_measurements_ops = {
.release = tpm_bios_measurements_release,
};
+static int is_bad(void *p)
+{
+ if (!p)
+ return 1;
+ if (IS_ERR(p) && (PTR_ERR(p) != -ENODEV))
+ return 1;
+ return 0;
+}
+
struct dentry **tpm_bios_log_setup(char *name)
{
struct dentry **ret = NULL, *tpm_dir, *bin_file, *ascii_file;
tpm_dir = securityfs_create_dir(name, NULL);
- if (!tpm_dir)
+ if (is_bad(tpm_dir))
goto out;
bin_file =
securityfs_create_file("binary_bios_measurements",
S_IRUSR | S_IRGRP, tpm_dir, NULL,
&tpm_binary_bios_measurements_ops);
- if (!bin_file)
+ if (is_bad(bin_file))
goto out_tpm;
ascii_file =
securityfs_create_file("ascii_bios_measurements",
S_IRUSR | S_IRGRP, tpm_dir, NULL,
&tpm_ascii_bios_measurements_ops);
- if (!ascii_file)
+ if (is_bad(ascii_file))
goto out_bin;
ret = kmalloc(3 * sizeof(struct dentry *), GFP_KERNEL);
@@ -538,3 +546,4 @@ void tpm_bios_log_teardown(struct dentry **lst)
securityfs_remove(lst[i]);
}
EXPORT_SYMBOL_GPL(tpm_bios_log_teardown);
+MODULE_LICENSE("GPL");