On Tue, Aug 09, 2016 at 03:34:53PM -0400, Nayna Jain wrote:
> Refactored eventlog.c file into tpm_eventlog.c and tpm_eventlog_init.c
>
> Breakdown is:
>
> * tpm_eventlog_init.c : Moved eventlog initialization methods like
> to setup securityfs, to open and release seqfile from tpm_eventlog.c
> to this file. This is to keep the logic of initialization for TPM1.2
> and TPM2.0 in common file.
>
> * tpm_eventlog.c : This file now has only methods specific to parsing
> and iterate TPM1.2 entry log formats. It can understand only TPM1.2
> and is called by methods in tpm_eventlog_init if identified TPM device
> is TPM1.2.
>
> Changelog v2:
>
> * Using of_node property of device rather than direct reading
> the device node.
> * Cleaned up the code to have generic open() for ascii and bios
> measurements
> * Removed dyncamic allocation for bios_dir and having dentry array
> directly into tpm-chip.
> * Using dev_dbg instead of pr_err in tpm_of.c
> * readlog(...) now accepts struct tpm_chip * as parameter.
This patch needs to be split.
One patch per idea please.
> ifdef CONFIG_ACPI
> - tpm-y += tpm_eventlog.o tpm_acpi.o
> + tpm-y += tpm_eventlog_init.o tpm_eventlog.o tpm_acpi.o
> else
> ifdef CONFIG_TCG_IBMVTPM
> - tpm-y += tpm_eventlog.o tpm_of.o
> + tpm-y += tpm_eventlog_init.o tpm_eventlog.o tpm_of.o
> endif
Still need to fix this, more like
tpm_of should be included if CONFIG_OF is set,
and tpm_acpi if CONFIG_ACPI is set, do not do this based on random
other configus..
> endif
> obj-$(CONFIG_TCG_TIS_CORE) += tpm_tis_core.o
> diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
> index e595013..7f6cdab 100644
> +++ b/drivers/char/tpm/tpm-chip.c
> @@ -171,6 +171,8 @@ struct tpm_chip *tpm_chip_alloc(struct device *dev,
> chip->dev.release = tpm_dev_release;
> chip->dev.parent = dev;
> chip->dev.groups = chip->groups;
> + if (dev->of_node)
> + chip->dev.of_node = dev->of_node;
No. chip->dev.parent->of_node.
> -extern struct dentry **tpm_bios_log_setup(const char *);
> -extern void tpm_bios_log_teardown(struct dentry **);
> +extern void tpm_bios_log_setup(struct tpm_chip *chip);
> +extern void tpm_bios_log_teardown(struct tpm_chip *chip);
We are trying to get rid of these extra externs..
> +
> + bin_file =
> + securityfs_create_file("binary_bios_measurements",
No, do
chip->bios_dir_count = 0;
chip->bios_dir[chip->bios_dir_count] = [..]
if (is_bad(chip->bios_dir[chip->bios_dir_count])
goto err
chip->bios_dir_count++
err:
for (I = 0; I != chip->bios_dir_count; ++I)
securityfs_remove(chip->bios_dir[I]);
> + for (i = 0; i < 3; i++) {
> + if (chip->bios_dir[i])
> + securityfs_remove(chip->bios_dir[i]);
Same logic as err: example above
>
> - np = of_find_node_by_name(NULL, "vtpm");
> + if (chip->dev.of_node)
> + np = chip->dev.of_node;
> if (!np) {
> - pr_err("%s: ERROR - IBMVTPM not supported\n", __func__);
> + dev_dbg(&chip->dev, "%s: ERROR - IBMVTPM not supported\n",
> + __func__);
> return -ENODEV;
> }
Where you able to test this on IBM's 'vtpm' stuff as well?
>
> sizep = of_get_property(np, "linux,sml-size", NULL);
> if (sizep == NULL) {
> - pr_err("%s: ERROR - SML size not found\n", __func__);
> + dev_dbg(&chip->dev, "%s: ERROR - SML size not found\n",
> + __func__);
> goto cleanup_eio;
> }
> if (*sizep == 0) {
> - pr_err("%s: ERROR - event log area empty\n", __func__);
> + dev_dbg(&chip->dev, "%s: ERROR - event log area empty\n",
> + __func__);
> goto cleanup_eio;
> }
>
> basep = of_get_property(np, "linux,sml-base", NULL);
> if (basep == NULL) {
> - pr_err("%s: ERROR - SML not found\n", __func__);
> + dev_dbg(&chip->dev, "%s: ERROR - SML not found\n",
> + __func__);
> goto cleanup_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__);
> of_node_put(np);
Why is there an of_node_put here but not in other error paths? Where is
the get this is putting?
Jason
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