[PATCH v3 0/3] firmware: google: Fix minor bugs

From: Patrick Rudolph

This patch series fixes 3 independent bugs in the google firmware
drivers.

Patch 1-2 do proper cleanup at kernel module unloading.

Patch 3 adds a check if the optional GSMI SMM handler is actually
present in the firmware and responses to the driver.

Changes in v2:
 - Add missing return statement
 - Add s-o-b on GSMI patches
 - Add define for reserved GSMI command

Changes in v3:
 - Cosmetic changes only

Arthur Heymans (2):
  firmware: google: Unregister driver_info on failure and exit in gsmi
  firmware: google: Probe for a GSMI handler in firmware

Patrick Rudolph (1):
  firmware: google: Release devices before unregistering the bus

drivers/firmware/google/coreboot_table.c |  7 +++++++
 drivers/firmware/google/gsmi.c           | 25 ++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

[PATCH v3 1/3] firmware: google: Release devices before unregistering the bus

From: Patrick Rudolph

Fix a bug where the kernel module can't be loaded after it has been
unloaded as the devices are still present and conflicting with the
to be created coreboot devices.

Signed-off-by: Patrick Rudolph 
---
 -v2:
    Add missing return statement.
 -v3:
    Add missing patch changelog.
---
 drivers/firmware/google/coreboot_table.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/firmware/google/coreboot_table.c b/drivers/firmware/google/coreboot_table.c
index 8d132e4f008a..0205987a4fd4 100644
--- a/drivers/firmware/google/coreboot_table.c
+++ b/drivers/firmware/google/coreboot_table.c
@@ -163,8 +163,15 @@ static int coreboot_table_probe(struct platform_device *pdev)
    return ret;
 }

+static int __cb_dev_unregister(struct device *dev, void *dummy)
+{
+	device_unregister(dev);
+	return 0;
+}
+
 static int coreboot_table_remove(struct platform_device *pdev)
 {
+	bus_for_each_dev(&coreboot_bus_type, NULL, NULL, __cb_dev_unregister);
    bus_unregister(&coreboot_bus_type);
    return 0;
 }