New patch to review for coreboot: drivers/pc80/tpm: Set default TPM acpi path if unset

[Philipp Deppenwiese]

Philipp Deppenwiese ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17855

-gerrit

commit 45c17419e47d8721f5e297ea8e0baa14117209b5
Author: Philipp Deppenwiese 
Date:   Wed Dec 14 01:06:55 2016 +0100

drivers/pc80/tpm: Set default TPM acpi path if unset

Enables default acpi path PCI0.LPCB if TPM support is
    selected in the kconfig system and the acpi path is not set via
    acpi_name callback in the platform code.

Thanks to Aaron Durbin for providing this fix.

Change-Id: Idb56cafe71efc8a52eee5a5a663478da99152360
    Signed-off-by: Philipp Deppenwiese 
---
 src/drivers/pc80/tpm/tpm.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c
index 57ea919..83dc923 100644
--- a/src/drivers/pc80/tpm/tpm.c
+++ b/src/drivers/pc80/tpm/tpm.c
@@ -875,8 +875,10 @@ static void lpc_tpm_fill_ssdt(struct device *dev)
    struct opregion opreg = OPREGION("TREG", SYSTEMMEMORY,
    				CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000);

-	if (!path)
-		return;
+	if (!path) {
+		path = "PCI0.LPCB";
+		printk(BIOS_DEBUG, "Using default TPM ACPI path: '%s'\n", path);
+	}

/* Device */
    acpigen_write_scope(path);