[PATCH] mailbox: qcom: Support building QCOM IPCC driver as module

[Huang Yiwei]

Change CONFIG_QCOM_IPCC to tristate and add exit function to
support module build for QCOM IPCC driver.

Signed-off-by: Huang Yiwei <hyiwei@xxxxxxxxxxxxxx>
---
 drivers/mailbox/Kconfig     | 2 +-
 drivers/mailbox/qcom-ipcc.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
index 05b1009..78f3006 100644
--- a/drivers/mailbox/Kconfig
+++ b/drivers/mailbox/Kconfig
@@ -245,7 +245,7 @@ config SPRD_MBOX
 	  you want to build the Spreatrum mailbox controller driver.
 
 config QCOM_IPCC
-	bool "Qualcomm Technologies, Inc. IPCC driver"
+	tristate "Qualcomm Technologies, Inc. IPCC driver"
 	depends on ARCH_QCOM || COMPILE_TEST
 	help
 	  Qualcomm Technologies, Inc. Inter-Processor Communication Controller
diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c
index 2d13c72..1ed9a87 100644
--- a/drivers/mailbox/qcom-ipcc.c
+++ b/drivers/mailbox/qcom-ipcc.c
@@ -280,6 +280,12 @@ static int __init qcom_ipcc_init(void)
 }
 arch_initcall(qcom_ipcc_init);
 
+static __exit void qcom_ipcc_exit(void)
+{
+	platform_driver_unregister(&qcom_ipcc_driver);
+}
+module_exit(qcom_ipcc_exit);
+
 MODULE_AUTHOR("Venkata Narendra Kumar Gutta <vnkgutta@xxxxxxxxxxxxxx>");
 MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>");
 MODULE_DESCRIPTION("Qualcomm Technologies, Inc. IPCC driver");
-- 
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