author: Allen Pais <apais@linux.microsoft.com> 2021-06-14 17:33:12 -0500
committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2021-08-12 13:32:18 +0200
commit: 156dc5bd1c8ddebef44949d98655207982b42b45
parent: 7a710ab78bb8c97b1655c513b97c2ffc827296d5
Commit Summary:
Diffstat:
1 file changed, 20 insertions, 0 deletions
diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
index 4fdbb026d575..5ce13b099d7d 100644
--- a/drivers/tee/optee/core.c
+++ b/drivers/tee/optee/core.c
@@ -574,6 +574,13 @@ static optee_invoke_fn *get_invoke_func(struct device *dev)
return ERR_PTR(-EINVAL);
}
+/* optee_remove - Device Removal Routine
+ * @pdev: platform device information struct
+ *
+ * optee_remove is called by platform subsystem to alert the driver
+ * that it should release the device
+ */
+
static int optee_remove(struct platform_device *pdev)
{
struct optee *optee = platform_get_drvdata(pdev);
@@ -604,6 +611,18 @@ static int optee_remove(struct platform_device *pdev)
return 0;
}
+/* optee_shutdown - Device Removal Routine
+ * @pdev: platform device information struct
+ *
+ * platform_shutdown is called by the platform subsystem to alert
+ * the driver that a shutdown, reboot, or kexec is happening and
+ * device must be disabled.
+ */
+static void optee_shutdown(struct platform_device *pdev)
+{
+ optee_disable_shm_cache(platform_get_drvdata(pdev));
+}
+
static int optee_probe(struct platform_device *pdev)
{
optee_invoke_fn *invoke_fn;
@@ -749,6 +768,7 @@ MODULE_DEVICE_TABLE(of, optee_dt_match);
static struct platform_driver optee_driver = {
.probe = optee_probe,
.remove = optee_remove,
+ .shutdown = optee_shutdown,
.driver = {
.name = "optee",
.of_match_table = optee_dt_match,