[chrome-os:chromeos-5.10 56/65] drivers/gpu/drm/i915/pxp/intel_pxp_tee.c:212:6: warning: no previous prototype for 'intel_pxp_tee_end_one_fw_session'

[kernel test robot <lkp@intel.com>]

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10
head:   3895b42e3e85433fec5339d2d937b4c57b1e0855
commit: 5b63195fa9e6028cdef57d18f19853bad0d33d03 [56/65] CHROMIUM: drm/i915/pxp: Mutisession version for Invalidate all PXP fw sessions during teardown
config: i386-randconfig-r033-20230220 (https://download.01.org/0day-ci/archive/20230222/202302220926.IMAvSF5z-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel
        git fetch --no-tags chrome-os chromeos-5.10
        git checkout 5b63195fa9e6028cdef57d18f19853bad0d33d03
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302220926.IMAvSF5z-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/pxp/intel_pxp_tee.c:212:6: warning: no previous prototype for 'intel_pxp_tee_end_one_fw_session' [-Wmissing-prototypes]
     212 | void intel_pxp_tee_end_one_fw_session(struct intel_pxp *pxp, u32 session_id, bool is_alive)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/intel_pxp_tee_end_one_fw_session +212 drivers/gpu/drm/i915/pxp/intel_pxp_tee.c

   211	
 > 212	void intel_pxp_tee_end_one_fw_session(struct intel_pxp *pxp, u32 session_id, bool is_alive)
   213	{
   214		struct drm_i915_private *i915 = pxp_to_gt(pxp)->i915;
   215		struct pxp_inv_stream_key_in msg_in = {0};
   216		struct pxp_inv_stream_key_out msg_out = {0};
   217		int ret, trials = 0;
   218	
   219	try_again:
   220		memset(&msg_in, 0, sizeof(msg_in));
   221		memset(&msg_out, 0, sizeof(msg_out));
   222		msg_in.header.api_version = PXP_TEE_APIVER;
   223		msg_in.header.command_id = PXP_TEE_INVALIDATE_STREAM_KEY;
   224		msg_in.header.buffer_len = sizeof(msg_in) - sizeof(msg_in.header);
   225	
   226		msg_in.header.extdata = FIELD_PREP(PXP_CMDHDR_EXTDATA_SESSION_VALID, 1);
   227		msg_in.header.extdata |= FIELD_PREP(PXP_CMDHDR_EXTDATA_APP_TYPE, 0);
   228		msg_in.header.extdata |= FIELD_PREP(PXP_CMDHDR_EXTDATA_SESSION_ID, session_id);
   229	
   230		ret = intel_pxp_tee_io_message(pxp,
   231					       &msg_in, sizeof(msg_in),
   232					       &msg_out, sizeof(msg_out),
   233					       NULL);
   234	
   235		/* Cleanup coherency between GT and Firmware is critical, so try again if it fails */
   236		if ((ret || msg_out.header.status != 0x0) && ++trials < 3)
   237			goto try_again;
   238	
   239		if (ret)
   240			drm_err(&i915->drm, "Failed to send tee msg for inv-stream-key-%d, ret=[%d]\n",
   241				session_id, ret);
   242		else if (msg_out.header.status != 0x0 && is_alive)
   243			drm_warn(&i915->drm, "PXP firmware failed inv-stream-key-%d with status 0x%08x\n",
   244				 session_id, msg_out.header.status);
   245	}
   246	

-- 
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