drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: cannot size expression

drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: cannot size expression

[kernel test robot]

:::::: 
:::::: Manual check reason: "low confidence static check warning: drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: cannot size expression"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Michal Wajdeczko <michal.wajdeczko@intel.com>
CC: "Piotr Piórkowski" <piotr.piorkowski@intel.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ef0c9f75a19532d7675384708fc8621e10850104
commit: fbbf73a81b845ea6fd40688a63570298298d03c1 drm/xe/pf: Force new VFs prorities only once
date:   2 months ago
:::::: branch date: 11 hours ago
:::::: commit date: 2 months ago
config: x86_64-randconfig-122 (https://download.01.org/0day-ci/archive/20260622/202606221633.jkV1d3JB-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260622/202606221633.jkV1d3JB-lkp@intel.com/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
| Fixes: fbbf73a81b84 ("drm/xe/pf: Force new VFs prorities only once")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202606221633.jkV1d3JB-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: Expected ) in function call
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: got ,
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:473:16: sparse: sparse: Expected ) in expression
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:473:16: sparse: sparse: got 0
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: undefined identifier '__VA_OPT__'
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: cast from unknown type
>> drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:207:9: sparse: sparse: cannot size expression
   drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c:473:16: sparse: sparse: undefined identifier '__VA_OPT__'

vim +207 drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c

48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  182  
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  183  /**
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  184   * xe_gt_sriov_pf_policy_set_sched_if_idle - Control the 'sched_if_idle' policy.
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  185   * @gt: the &xe_gt where to apply the policy
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  186   * @enable: the value of the 'sched_if_idle' policy
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  187   *
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  188   * This function can only be called on PF.
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  189   *
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  190   * Return: 0 on success or a negative error code on failure.
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  191   */
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  192  int xe_gt_sriov_pf_policy_set_sched_if_idle(struct xe_gt *gt, bool enable)
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  193  {
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  194  	u32 priority;
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  195  	int err;
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  196  
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  197  	guard(mutex)(xe_gt_sriov_pf_master_mutex(gt));
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  198  
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  199  	err = pf_provision_sched_if_idle(gt, enable);
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  200  	if (err)
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  201  		return err;
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  202  
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  203  	/*
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  204  	 * As of GuC 70.12 a change of this policy impacts individual configs
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  205  	 * of all VFs. See `GUC_KLV_VGT_POLICY_SCHED_IF_IDLE`_ for details.
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  206  	 */
fbbf73a81b845ea Michal Wajdeczko 2026-04-02 @207  	xe_gt_assert(gt, GUC_FIRMWARE_VER_AT_LEAST(&gt->uc.guc, 70, 12));
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  208  
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  209  	priority = enable ? GUC_SCHED_PRIORITY_NORMAL : GUC_SCHED_PRIORITY_LOW;
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  210  	xe_gt_sriov_pf_config_force_sched_priority_locked(gt, priority);
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  211  
fbbf73a81b845ea Michal Wajdeczko 2026-04-02  212  	return 0;
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  213  }
48b05e3c3dbbac4 Michal Wajdeczko 2024-04-10  214  

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