diff mbox series

usb: ehci: Simplify platform driver registration

Message ID 20210907044527.2137211-1-linux@roeck-us.net (mailing list archive)
State Superseded
Headers show
Series usb: ehci: Simplify platform driver registration | expand

Commit Message

Guenter Roeck Sept. 7, 2021, 4:45 a.m. UTC
Use platform_register_drivers() and platform_unregister_drivers() to
register and unregister ehci platform drivers. This simplifies the code
and prevents the following build errors seen with sparc:allmodconfig.

drivers/usb/host/ehci-hcd.c:1301: error:
	"PLATFORM_DRIVER" redefined
drivers/usb/host/ehci-sh.c:173:31: error:
	'ehci_hcd_sh_driver' defined but not used

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/usb/host/ehci-hcd.c | 75 +++++++++++--------------------------
 1 file changed, 21 insertions(+), 54 deletions(-)

Comments

kernel test robot Sept. 7, 2021, 6:37 a.m. UTC | #1
Hi Guenter,

I love your patch! Yet something to improve:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on v5.14 next-20210907]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Guenter-Roeck/usb-ehci-Simplify-platform-driver-registration/20210907-124747
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
config: x86_64-randconfig-a011-20210906 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 9c476172b93367d2cb88d7d3f4b1b5b456fa6020)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/bd9aa6646a29d48171474905fedca85ac7ff6ce5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Guenter-Roeck/usb-ehci-Simplify-platform-driver-registration/20210907-124747
        git checkout bd9aa6646a29d48171474905fedca85ac7ff6ce5
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/usb/host/ehci-hcd.c:1340:11: error: implicit declaration of function 'platform_register_drivers' [-Werror,-Wimplicit-function-declaration]
           retval = platform_register_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
                    ^
>> drivers/usb/host/ehci-hcd.c:1357:2: error: implicit declaration of function 'platform_unregister_drivers' [-Werror,-Wimplicit-function-declaration]
           platform_unregister_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
           ^
   drivers/usb/host/ehci-hcd.c:1357:2: note: did you mean 'pci_unregister_driver'?
   include/linux/pci.h:1433:6: note: 'pci_unregister_driver' declared here
   void pci_unregister_driver(struct pci_driver *dev);
        ^
   2 errors generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SND_SOC_MT6359
   Depends on SOUND && !UML && SND && SND_SOC && MTK_PMIC_WRAP
   Selected by
   - SND_SOC_MT8195_MT6359_RT1019_RT5682 && SOUND && !UML && SND && SND_SOC && I2C && SND_SOC_MT8195


vim +/platform_register_drivers +1340 drivers/usb/host/ehci-hcd.c

  1339	
> 1340		retval = platform_register_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
  1341		if (retval < 0)
  1342			goto clean0;
  1343		return 0;
  1344	
  1345	clean0:
  1346	#ifdef CONFIG_DYNAMIC_DEBUG
  1347		debugfs_remove(ehci_debug_root);
  1348		ehci_debug_root = NULL;
  1349	#endif
  1350		clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
  1351		return retval;
  1352	}
  1353	module_init(ehci_hcd_init);
  1354	
  1355	static void __exit ehci_hcd_cleanup(void)
  1356	{
> 1357		platform_unregister_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
kernel test robot Sept. 7, 2021, 10:56 a.m. UTC | #2
Hi Guenter,

I love your patch! Yet something to improve:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on v5.14 next-20210907]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Guenter-Roeck/usb-ehci-Simplify-platform-driver-registration/20210907-124747
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
config: alpha-randconfig-r023-20210906 (attached as .config)
compiler: alpha-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/bd9aa6646a29d48171474905fedca85ac7ff6ce5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Guenter-Roeck/usb-ehci-Simplify-platform-driver-registration/20210907-124747
        git checkout bd9aa6646a29d48171474905fedca85ac7ff6ce5
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=alpha 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/usb/host/ehci-hcd.c: In function 'ehci_hcd_init':
>> drivers/usb/host/ehci-hcd.c:1340:18: error: implicit declaration of function 'platform_register_drivers'; did you mean 'pci_register_driver'? [-Werror=implicit-function-declaration]
    1340 |         retval = platform_register_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~
         |                  pci_register_driver
   drivers/usb/host/ehci-hcd.c: In function 'ehci_hcd_cleanup':
>> drivers/usb/host/ehci-hcd.c:1357:9: error: implicit declaration of function 'platform_unregister_drivers'; did you mean 'pci_unregister_driver'? [-Werror=implicit-function-declaration]
    1357 |         platform_unregister_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
         |         pci_unregister_driver
   cc1: some warnings being treated as errors


vim +1340 drivers/usb/host/ehci-hcd.c

  1339	
> 1340		retval = platform_register_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
  1341		if (retval < 0)
  1342			goto clean0;
  1343		return 0;
  1344	
  1345	clean0:
  1346	#ifdef CONFIG_DYNAMIC_DEBUG
  1347		debugfs_remove(ehci_debug_root);
  1348		ehci_debug_root = NULL;
  1349	#endif
  1350		clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
  1351		return retval;
  1352	}
  1353	module_init(ehci_hcd_init);
  1354	
  1355	static void __exit ehci_hcd_cleanup(void)
  1356	{
> 1357		platform_unregister_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
diff mbox series

Patch

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 6bdc6d6bf74d..8a32a9531ad2 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1278,29 +1278,42 @@  MODULE_LICENSE ("GPL");
 
 #ifdef CONFIG_USB_EHCI_SH
 #include "ehci-sh.c"
-#define PLATFORM_DRIVER		ehci_hcd_sh_driver
 #endif
 
 #ifdef CONFIG_PPC_PS3
 #include "ehci-ps3.c"
-#define	PS3_SYSTEM_BUS_DRIVER	ps3_ehci_driver
 #endif
 
 #ifdef CONFIG_USB_EHCI_HCD_PPC_OF
 #include "ehci-ppc-of.c"
-#define OF_PLATFORM_DRIVER	ehci_hcd_ppc_of_driver
 #endif
 
 #ifdef CONFIG_XPS_USB_HCD_XILINX
 #include "ehci-xilinx-of.c"
-#define XILINX_OF_PLATFORM_DRIVER	ehci_hcd_xilinx_of_driver
 #endif
 
 #ifdef CONFIG_SPARC_LEON
 #include "ehci-grlib.c"
-#define PLATFORM_DRIVER		ehci_grlib_driver
 #endif
 
+static struct platform_driver * const platform_drivers[] = {
+#ifdef CONFIG_USB_EHCI_SH
+	&ehci_hcd_sh_driver,
+#endif
+#ifdef CONFIG_PPC_PS3
+	&ps3_ehci_driver,
+#endif
+#ifdef CONFIG_USB_EHCI_HCD_PPC_OF
+	&ehci_hcd_ppc_of_driver,
+#endif
+#ifdef CONFIG_XPS_USB_HCD_XILINX
+	&ehci_hcd_xilinx_of_driver,
+#endif
+#ifdef CONFIG_SPARC_LEON
+	&ehci_grlib_driver,
+#endif
+};
+
 static int __init ehci_hcd_init(void)
 {
 	int retval = 0;
@@ -1324,47 +1337,12 @@  static int __init ehci_hcd_init(void)
 	ehci_debug_root = debugfs_create_dir("ehci", usb_debug_root);
 #endif
 
-#ifdef PLATFORM_DRIVER
-	retval = platform_driver_register(&PLATFORM_DRIVER);
+	retval = platform_register_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
 	if (retval < 0)
 		goto clean0;
-#endif
-
-#ifdef PS3_SYSTEM_BUS_DRIVER
-	retval = ps3_ehci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
-	if (retval < 0)
-		goto clean2;
-#endif
-
-#ifdef OF_PLATFORM_DRIVER
-	retval = platform_driver_register(&OF_PLATFORM_DRIVER);
-	if (retval < 0)
-		goto clean3;
-#endif
-
-#ifdef XILINX_OF_PLATFORM_DRIVER
-	retval = platform_driver_register(&XILINX_OF_PLATFORM_DRIVER);
-	if (retval < 0)
-		goto clean4;
-#endif
-	return retval;
+	return 0;
 
-#ifdef XILINX_OF_PLATFORM_DRIVER
-	/* platform_driver_unregister(&XILINX_OF_PLATFORM_DRIVER); */
-clean4:
-#endif
-#ifdef OF_PLATFORM_DRIVER
-	platform_driver_unregister(&OF_PLATFORM_DRIVER);
-clean3:
-#endif
-#ifdef PS3_SYSTEM_BUS_DRIVER
-	ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
-clean2:
-#endif
-#ifdef PLATFORM_DRIVER
-	platform_driver_unregister(&PLATFORM_DRIVER);
 clean0:
-#endif
 #ifdef CONFIG_DYNAMIC_DEBUG
 	debugfs_remove(ehci_debug_root);
 	ehci_debug_root = NULL;
@@ -1376,18 +1354,7 @@  module_init(ehci_hcd_init);
 
 static void __exit ehci_hcd_cleanup(void)
 {
-#ifdef XILINX_OF_PLATFORM_DRIVER
-	platform_driver_unregister(&XILINX_OF_PLATFORM_DRIVER);
-#endif
-#ifdef OF_PLATFORM_DRIVER
-	platform_driver_unregister(&OF_PLATFORM_DRIVER);
-#endif
-#ifdef PLATFORM_DRIVER
-	platform_driver_unregister(&PLATFORM_DRIVER);
-#endif
-#ifdef PS3_SYSTEM_BUS_DRIVER
-	ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
-#endif
+	platform_unregister_drivers(platform_drivers, ARRAY_SIZE(platform_drivers));
 #ifdef CONFIG_DYNAMIC_DEBUG
 	debugfs_remove(ehci_debug_root);
 #endif