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Date:   Tue, 26 Oct 2021 09:48:32 +0800
From:   kernel test robot <lkp@...el.com>
To:     Marc Bonnici <marc.bonnici@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Sudeep Holla <sudeep.holla@....com>
Subject: [sudeep-holla:ffa_notifications_proto 10/15]
 drivers/firmware/arm_ffa/driver.c:1127:6: warning: no previous prototype for
 'handle_notifications'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git ffa_notifications_proto
head:   c58dfd7efd456c261212967aebc7938a7d5998be
commit: 9cc632923b73b846af28cff5259961b020bd5588 [10/15] ffa_driver: Add Notification mechanism
config: arm64-randconfig-r023-20211021 (attached as .config)
compiler: aarch64-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://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git/commit/?id=9cc632923b73b846af28cff5259961b020bd5588
        git remote add sudeep-holla https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git
        git fetch --no-tags sudeep-holla ffa_notifications_proto
        git checkout 9cc632923b73b846af28cff5259961b020bd5588
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm64 

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

All warnings (new ones prefixed by >>):

   drivers/firmware/arm_ffa/driver.c: In function 'ffa_compatible_version_find':
   drivers/firmware/arm_ffa/driver.c:310:13: warning: unused variable 'compat_version' [-Wunused-variable]
     310 |         u32 compat_version;
         |             ^~~~~~~~~~~~~~
   drivers/firmware/arm_ffa/driver.c: At top level:
>> drivers/firmware/arm_ffa/driver.c:1127:6: warning: no previous prototype for 'handle_notifications' [-Wmissing-prototypes]
    1127 | void handle_notifications(struct work_struct *_)
         |      ^~~~~~~~~~~~~~~~~~~~
   drivers/firmware/arm_ffa/driver.c:1283:6: warning: no previous prototype for '__enable_schedule_receiver_interrupt' [-Wmissing-prototypes]
    1283 | void __enable_schedule_receiver_interrupt(void* _) {
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/firmware/arm_ffa/driver.c:627:12: warning: 'ffa_notification_set' defined but not used [-Wunused-function]
     627 | static int ffa_notification_set(ffa_partition_id_t src_id, ffa_partition_id_t dst_id,
         |            ^~~~~~~~~~~~~~~~~~~~


vim +/handle_notifications +1127 drivers/firmware/arm_ffa/driver.c

  1126	
> 1127	void handle_notifications(struct work_struct *_)
  1128	{
  1129		int rc;
  1130		u32 flags = 0;
  1131		struct ffa_notification_bitmaps bitmaps;
  1132	
  1133		pr_debug("Handling Notifications on cpu: %d\n", smp_processor_id());
  1134	
  1135		/* Get all notification bitmaps */
  1136		flags |= ALL_NOTIFICATION_BITMAPS_FLAGS;
  1137	
  1138		rc = ffa_notification_get(flags, &bitmaps);
  1139	
  1140		if (rc) {
  1141			pr_err("Failed to retreive notifications with %d!\n", rc);
  1142			return;
  1143		}
  1144	
  1145		/* Handle VM and SP Partition Notifications */
  1146		pr_debug("Handling VM Notifications...\n");
  1147		handle_notification_bitmap(&bitmaps.vm_notifications,
  1148				           notification_callbacks.from_vm);
  1149		pr_debug("Handling SP Notification...\n");
  1150		handle_notification_bitmap(&bitmaps.sp_notifications,
  1151				           notification_callbacks.from_sp);
  1152		pr_debug("Handling Architected Notification...\n");
  1153		handle_notification_bitmap(&bitmaps.architected_notifications,
  1154				           notification_callbacks.from_framework);
  1155	
  1156		return;
  1157	}
  1158	DECLARE_WORK(handle_notifications_work, handle_notifications);
  1159	

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

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