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tpm: replace of_find_node_by_name() with dev of_node property

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Using the device of_node property is a better way to refer to the
device tree node rather than of_find_node_by_name().

Suggested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Nayna Jain 2016-11-14 05:00:55 -05:00 committed by Jarkko Sakkinen
parent 02ae138288
commit ed4fdb4f5d
1 changed files with 2 additions and 4 deletions
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6
drivers/char/tpm/tpm_of.c
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@ -29,7 +29,8 @@ int tpm_read_log_of(struct tpm_chip *chip)
struct tpm_bios_log *log;
log = &chip->log;
np = of_find_node_by_name(NULL, "vtpm");
if (chip->dev.parent->of_node)
np = chip->dev.parent->of_node;
if (!np) {
pr_err("%s: ERROR - IBMVTPM not supported\n", __func__);
return -ENODEV;
@ -55,18 +56,15 @@ int tpm_read_log_of(struct tpm_chip *chip)
if (!log->bios_event_log) {
pr_err("%s: ERROR - Not enough memory for BIOS measurements\n",
__func__);
of_node_put(np);
return -ENOMEM;
}
log->bios_event_log_end = log->bios_event_log + *sizep;
memcpy(log->bios_event_log, __va(*basep), *sizep);
of_node_put(np);
return 0;
cleanup_eio:
of_node_put(np);
return -EIO;
}