Re: [PATCH v3 4/4] virt: vmgenid: add support for devicetree bindings
From: kernel test robot
Date: Tue Mar 26 2024 - 12:47:14 EST
Hi Sudan,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 8e938e39866920ddc266898e6ae1fffc5c8f51aa]
url: https://github.com/intel-lab-lkp/linux/commits/Sudan-Landge/virt-vmgenid-rearrange-code-to-make-review-easier/20240326-035657
base: 8e938e39866920ddc266898e6ae1fffc5c8f51aa
patch link: https://lore.kernel.org/r/20240325195306.13133-5-sudanl%40amazon.com
patch subject: [PATCH v3 4/4] virt: vmgenid: add support for devicetree bindings
config: x86_64-buildonly-randconfig-004-20240326 (https://download.01.org/0day-ci/archive/20240327/202403270050.wJ0Hd5aB-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240327/202403270050.wJ0Hd5aB-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403270050.wJ0Hd5aB-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
drivers/virt/vmgenid.c: In function 'vmgenid_add_of':
drivers/virt/vmgenid.c:154:15: error: 'dev' undeclared (first use in this function); did you mean 'pdev'?
154 | (void)dev;
| ^~~
| pdev
drivers/virt/vmgenid.c:154:15: note: each undeclared identifier is reported only once for each function it appears in
drivers/virt/vmgenid.c: At top level:
>> drivers/virt/vmgenid.c:60:12: warning: 'setup_vmgenid_state' defined but not used [-Wunused-function]
60 | static int setup_vmgenid_state(struct vmgenid_state *state, u8 *next_id)
| ^~~~~~~~~~~~~~~~~~~
>> drivers/virt/vmgenid.c:27:13: warning: 'vmgenid_notify' defined but not used [-Wunused-function]
27 | static void vmgenid_notify(struct device *device)
| ^~~~~~~~~~~~~~
vim +/setup_vmgenid_state +60 drivers/virt/vmgenid.c
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23 26
fba2c3554a30ca Sudan Landge 2024-03-25 @27 static void vmgenid_notify(struct device *device)
5eb78dfcd888d3 Sudan Landge 2024-03-25 28 {
fba2c3554a30ca Sudan Landge 2024-03-25 29 struct vmgenid_state *state = device->driver_data;
5eb78dfcd888d3 Sudan Landge 2024-03-25 30 char *envp[] = { "NEW_VMGENID=1", NULL };
5eb78dfcd888d3 Sudan Landge 2024-03-25 31 u8 old_id[VMGENID_SIZE];
5eb78dfcd888d3 Sudan Landge 2024-03-25 32
5eb78dfcd888d3 Sudan Landge 2024-03-25 33 memcpy(old_id, state->this_id, sizeof(old_id));
5eb78dfcd888d3 Sudan Landge 2024-03-25 34 memcpy(state->this_id, state->next_id, sizeof(state->this_id));
5eb78dfcd888d3 Sudan Landge 2024-03-25 35 if (!memcmp(old_id, state->this_id, sizeof(old_id)))
5eb78dfcd888d3 Sudan Landge 2024-03-25 36 return;
5eb78dfcd888d3 Sudan Landge 2024-03-25 37 add_vmfork_randomness(state->this_id, sizeof(state->this_id));
fba2c3554a30ca Sudan Landge 2024-03-25 38 kobject_uevent_env(&device->kobj, KOBJ_CHANGE, envp);
5eb78dfcd888d3 Sudan Landge 2024-03-25 39 }
5eb78dfcd888d3 Sudan Landge 2024-03-25 40
84d2b6732ae89f Sudan Landge 2024-03-25 41 #if IS_ENABLED(CONFIG_ACPI)
fba2c3554a30ca Sudan Landge 2024-03-25 42 static void vmgenid_acpi_handler(acpi_handle handle, u32 event, void *dev)
af6b54e2b5baa5 Jason A. Donenfeld 2022-02-23 43 {
84d2b6732ae89f Sudan Landge 2024-03-25 44 (void)handle;
84d2b6732ae89f Sudan Landge 2024-03-25 45 (void)event;
fba2c3554a30ca Sudan Landge 2024-03-25 46 vmgenid_notify(dev);
fba2c3554a30ca Sudan Landge 2024-03-25 47 }
84d2b6732ae89f Sudan Landge 2024-03-25 48 #endif
84d2b6732ae89f Sudan Landge 2024-03-25 49
84d2b6732ae89f Sudan Landge 2024-03-25 50 #if IS_ENABLED(CONFIG_OF)
84d2b6732ae89f Sudan Landge 2024-03-25 51 static irqreturn_t vmgenid_of_irq_handler(int irq, void *dev)
84d2b6732ae89f Sudan Landge 2024-03-25 52 {
84d2b6732ae89f Sudan Landge 2024-03-25 53 (void)irq;
84d2b6732ae89f Sudan Landge 2024-03-25 54 vmgenid_notify(dev);
84d2b6732ae89f Sudan Landge 2024-03-25 55
84d2b6732ae89f Sudan Landge 2024-03-25 56 return IRQ_HANDLED;
84d2b6732ae89f Sudan Landge 2024-03-25 57 }
84d2b6732ae89f Sudan Landge 2024-03-25 58 #endif
fba2c3554a30ca Sudan Landge 2024-03-25 59
fba2c3554a30ca Sudan Landge 2024-03-25 @60 static int setup_vmgenid_state(struct vmgenid_state *state, u8 *next_id)
fba2c3554a30ca Sudan Landge 2024-03-25 61 {
fba2c3554a30ca Sudan Landge 2024-03-25 62 if (IS_ERR(next_id))
fba2c3554a30ca Sudan Landge 2024-03-25 63 return PTR_ERR(next_id);
fba2c3554a30ca Sudan Landge 2024-03-25 64
fba2c3554a30ca Sudan Landge 2024-03-25 65 state->next_id = next_id;
fba2c3554a30ca Sudan Landge 2024-03-25 66 memcpy(state->this_id, state->next_id, sizeof(state->this_id));
fba2c3554a30ca Sudan Landge 2024-03-25 67 add_device_randomness(state->this_id, sizeof(state->this_id));
fba2c3554a30ca Sudan Landge 2024-03-25 68 return 0;
fba2c3554a30ca Sudan Landge 2024-03-25 69 }
fba2c3554a30ca Sudan Landge 2024-03-25 70
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki