stmmac: fix driver Kconfig when built as module

This patches fixes the driver when built as dynamic module.
In fact, the platform part cannot be built and the probe fails
(thanks to Bob Liu that reported this bug).

v2: as D. Miller suggested, it is not necessary to make the
pci and the platform code mutually exclusive.
Having both could also help, at built time ,to verify that
all the code is validated and compiles fine.

v3: removed wrong Reviewed-by from the patch

Reported-by: Bob Liu <lliubbo@gmail.com>
cc: Rayagond Kokatanur <rayagond@vayavyalabs.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 036428348faa3e5b58cd261b9f0ec45e0ad3e4fc..0076f770e637d922f620cb7c9774fbeb2798f226 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -13,9 +13,8 @@ config STMMAC_ETH
 if STMMAC_ETH
 
 config STMMAC_PLATFORM
-       tristate "STMMAC platform bus support"
+       bool "STMMAC Platform bus support"
        depends on STMMAC_ETH
-       default y
        ---help---
          This selects the platform specific bus support for
          the stmmac device driver. This is the driver used
@@ -26,7 +25,7 @@ config STMMAC_PLATFORM
          If unsure, say N.
 
 config STMMAC_PCI
-       tristate "STMMAC support on PCI bus (EXPERIMENTAL)"
+       bool "STMMAC PCI bus support (EXPERIMENTAL)"
        depends on STMMAC_ETH && PCI && EXPERIMENTAL
        ---help---
          This is to select the Synopsys DWMAC available on PCI devices,

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 6b5d060ee9def7dd5fb5a8edac7037cc71bd869b..6d07ba2c86615f632071ac097c7a0bac7851529f 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -95,7 +95,8 @@ extern int stmmac_mdio_register(struct net_device *ndev);
 extern void stmmac_set_ethtool_ops(struct net_device *netdev);
 extern const struct stmmac_desc_ops enh_desc_ops;
 extern const struct stmmac_desc_ops ndesc_ops;
-
+extern struct pci_driver stmmac_pci_driver;
+extern struct platform_driver stmmac_pltfr_driver;
 int stmmac_freeze(struct net_device *ndev);
 int stmmac_restore(struct net_device *ndev);
 int stmmac_resume(struct net_device *ndev);

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index ea33eae22eebb56a670f112717249a6721cdbd16..36385695141236a63eeed4cb8d769d670ca1e8f0 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -42,6 +42,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/slab.h>
 #include <linux/prefetch.h>
+#include <linux/pci.h>
 #ifdef CONFIG_STMMAC_DEBUG_FS
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
@@ -2093,6 +2094,30 @@ int stmmac_restore(struct net_device *ndev)
 }
 #endif /* CONFIG_PM */
 
+static int __init stmmac_init(void)
+{
+       int err = 0;
+
+       err = platform_driver_register(&stmmac_pltfr_driver);
+
+       if (!err) {
+               err = pci_register_driver(&stmmac_pci_driver);
+               if (err)
+                       platform_driver_unregister(&stmmac_pltfr_driver);
+       }
+
+       return err;
+}
+
+static void __exit stmmac_exit(void)
+{
+       pci_unregister_driver(&stmmac_pci_driver);
+       platform_driver_unregister(&stmmac_pltfr_driver);
+}
+
+module_init(stmmac_init);
+module_exit(stmmac_exit);
+
 #ifndef MODULE
 static int __init stmmac_cmdline_opt(char *str)
 {

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 58fab5303e9cb45daaf4c134900dbb4ea47b60d8..cf826e6b6aa1d21eee5703d1b7edbcaef7b8e1c2 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -179,7 +179,7 @@ static DEFINE_PCI_DEVICE_TABLE(stmmac_id_table) = {
 
 MODULE_DEVICE_TABLE(pci, stmmac_id_table);
 
-static struct pci_driver stmmac_driver = {
+struct pci_driver stmmac_pci_driver = {
        .name = STMMAC_RESOURCE_NAME,
        .id_table = stmmac_id_table,
        .probe = stmmac_pci_probe,
@@ -190,33 +190,6 @@ static struct pci_driver stmmac_driver = {
 #endif
 };
 
-/**
- * stmmac_init_module - Entry point for the driver
- * Description: This function is the entry point for the driver.
- */
-static int __init stmmac_init_module(void)
-{
-       int ret;
-
-       ret = pci_register_driver(&stmmac_driver);
-       if (ret < 0)
-               pr_err("%s: ERROR: driver registration failed\n", __func__);
-
-       return ret;
-}
-
-/**
- * stmmac_cleanup_module - Cleanup routine for the driver
- * Description: This function is the cleanup routine for the driver.
- */
-static void __exit stmmac_cleanup_module(void)
-{
-       pci_unregister_driver(&stmmac_driver);
-}
-
-module_init(stmmac_init_module);
-module_exit(stmmac_cleanup_module);
-
 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
 MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 3dd8f08038086896121e9e0031b7ea5af32778b1..680d2b8dfe27990852849744426e115b27e41e4f 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -255,7 +255,7 @@ static const struct of_device_id stmmac_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
 
-static struct platform_driver stmmac_driver = {
+struct platform_driver stmmac_pltfr_driver = {
        .probe = stmmac_pltfr_probe,
        .remove = stmmac_pltfr_remove,
        .driver = {
@@ -266,8 +266,6 @@ static struct platform_driver stmmac_driver = {
                   },
 };
 
-module_platform_driver(stmmac_driver);
-
 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
 MODULE_LICENSE("GPL");