Hi Jani,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on next-20190506]
[cannot apply to v5.1]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Jani-Nikula/drm-i915-add-force_probe-module-parameter-to-replace-alpha_support/20190507-045927
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-x009-201918 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <[email protected]>

All error/warnings (new ones prefixed by >>):

   In file included from arch/x86/include/asm/bug.h:83:0,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/gfp.h:5,
                    from include/linux/firmware.h:7,
                    from drivers/gpu/drm/i915/intel_csr.c:25:
   drivers/gpu/drm/i915/intel_csr.c: In function 'intel_csr_ucode_init':
>> drivers/gpu/drm/i915/intel_csr.c:532:12: error: implicit declaration of 
>> function 'IS_ALPHA_SUPPORT'; did you mean 'DP_PSR_SUPPORT'? 
>> [-Werror=implicit-function-declaration]
      WARN_ON(!IS_ALPHA_SUPPORT(INTEL_INFO(dev_priv)));
               ^
   include/asm-generic/bug.h:131:25: note: in definition of macro 'WARN'
     int __ret_warn_on = !!(condition);    \
                            ^~~~~~~~~
>> drivers/gpu/drm/i915/intel_csr.c:532:3: note: in expansion of macro 'WARN_ON'
      WARN_ON(!IS_ALPHA_SUPPORT(INTEL_INFO(dev_priv)));
      ^~~~~~~
   cc1: some warnings being treated as errors

vim +532 drivers/gpu/drm/i915/intel_csr.c

eb805623 Daniel Vetter   2015-05-04  462  
aa9145c4 Animesh Manna   2015-05-13  463  /**
aa9145c4 Animesh Manna   2015-05-13  464   * intel_csr_ucode_init() - 
initialize the firmware loading.
f4448375 Daniel Vetter   2015-10-28  465   * @dev_priv: i915 drm device.
aa9145c4 Animesh Manna   2015-05-13  466   *
aa9145c4 Animesh Manna   2015-05-13  467   * This function is called at the 
time of loading the display driver to read
aa9145c4 Animesh Manna   2015-05-13  468   * firmware from a .bin file and 
copied into a internal memory.
aa9145c4 Animesh Manna   2015-05-13  469   */
f4448375 Daniel Vetter   2015-10-28  470  void intel_csr_ucode_init(struct 
drm_i915_private *dev_priv)
eb805623 Daniel Vetter   2015-05-04  471  {
eb805623 Daniel Vetter   2015-05-04  472        struct intel_csr *csr = 
&dev_priv->csr;
8144ac59 Daniel Vetter   2015-10-28  473  
8144ac59 Daniel Vetter   2015-10-28  474        INIT_WORK(&dev_priv->csr.work, 
csr_load_work_fn);
eb805623 Daniel Vetter   2015-05-04  475  
f4448375 Daniel Vetter   2015-10-28  476        if (!HAS_CSR(dev_priv))
eb805623 Daniel Vetter   2015-05-04  477                return;
eb805623 Daniel Vetter   2015-05-04  478  
d8a5b7d7 Jani Nikula     2018-09-26  479        /*
d8a5b7d7 Jani Nikula     2018-09-26  480         * Obtain a runtime pm 
reference, until CSR is loaded, to avoid entering
d8a5b7d7 Jani Nikula     2018-09-26  481         * runtime-suspend.
d8a5b7d7 Jani Nikula     2018-09-26  482         *
d8a5b7d7 Jani Nikula     2018-09-26  483         * On error, we return with the 
rpm wakeref held to prevent runtime
d8a5b7d7 Jani Nikula     2018-09-26  484         * suspend as runtime suspend 
*requires* a working CSR for whatever
d8a5b7d7 Jani Nikula     2018-09-26  485         * reason.
d8a5b7d7 Jani Nikula     2018-09-26  486         */
0e6e0be4 Chris Wilson    2019-01-14  487        
intel_csr_runtime_pm_get(dev_priv);
d8a5b7d7 Jani Nikula     2018-09-26  488  
02c07b76 Lucas De Marchi 2018-11-16  489        if (INTEL_GEN(dev_priv) >= 12) {
02c07b76 Lucas De Marchi 2018-11-16  490                /* Allow to load fw via 
parameter using the last known size */
02c07b76 Lucas De Marchi 2018-11-16  491                csr->max_fw_size = 
GEN12_CSR_MAX_FW_SIZE;
4b225248 Anusha Srivatsa 2019-03-22  492        } else if (IS_GEN(dev_priv, 
11)) {
7fe78985 Jani Nikula     2018-09-27  493                csr->fw_path = 
ICL_CSR_PATH;
180e9d23 Jani Nikula     2018-09-26  494                csr->required_version = 
ICL_CSR_VERSION_REQUIRED;
d8a5b7d7 Jani Nikula     2018-09-26  495                csr->max_fw_size = 
ICL_CSR_MAX_FW_SIZE;
180e9d23 Jani Nikula     2018-09-26  496        } else if 
(IS_CANNONLAKE(dev_priv)) {
7fe78985 Jani Nikula     2018-09-27  497                csr->fw_path = 
CNL_CSR_PATH;
180e9d23 Jani Nikula     2018-09-26  498                csr->required_version = 
CNL_CSR_VERSION_REQUIRED;
7fe78985 Jani Nikula     2018-09-27  499                csr->max_fw_size = 
CNL_CSR_MAX_FW_SIZE;
180e9d23 Jani Nikula     2018-09-26  500        } else if 
(IS_GEMINILAKE(dev_priv)) {
7fe78985 Jani Nikula     2018-09-27  501                csr->fw_path = 
GLK_CSR_PATH;
180e9d23 Jani Nikula     2018-09-26  502                csr->required_version = 
GLK_CSR_VERSION_REQUIRED;
d8a5b7d7 Jani Nikula     2018-09-26  503                csr->max_fw_size = 
GLK_CSR_MAX_FW_SIZE;
180e9d23 Jani Nikula     2018-09-26  504        } else if 
(IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) {
7fe78985 Jani Nikula     2018-09-27  505                csr->fw_path = 
KBL_CSR_PATH;
180e9d23 Jani Nikula     2018-09-26  506                csr->required_version = 
KBL_CSR_VERSION_REQUIRED;
7fe78985 Jani Nikula     2018-09-27  507                csr->max_fw_size = 
KBL_CSR_MAX_FW_SIZE;
180e9d23 Jani Nikula     2018-09-26  508        } else if 
(IS_SKYLAKE(dev_priv)) {
7fe78985 Jani Nikula     2018-09-27  509                csr->fw_path = 
SKL_CSR_PATH;
180e9d23 Jani Nikula     2018-09-26  510                csr->required_version = 
SKL_CSR_VERSION_REQUIRED;
7fe78985 Jani Nikula     2018-09-27  511                csr->max_fw_size = 
SKL_CSR_MAX_FW_SIZE;
180e9d23 Jani Nikula     2018-09-26  512        } else if 
(IS_BROXTON(dev_priv)) {
7fe78985 Jani Nikula     2018-09-27  513                csr->fw_path = 
BXT_CSR_PATH;
180e9d23 Jani Nikula     2018-09-26  514                csr->required_version = 
BXT_CSR_VERSION_REQUIRED;
d8a5b7d7 Jani Nikula     2018-09-26  515                csr->max_fw_size = 
BXT_CSR_MAX_FW_SIZE;
180e9d23 Jani Nikula     2018-09-26  516        }
abd41dc9 Damien Lespiau  2015-06-04  517  
d8a5b7d7 Jani Nikula     2018-09-26  518        if 
(i915_modparams.dmc_firmware_path) {
e7351a84 Jani Nikula     2018-09-26  519                if 
(strlen(i915_modparams.dmc_firmware_path) == 0) {
e7351a84 Jani Nikula     2018-09-26  520                        csr->fw_path = 
NULL;
b598a88e Colin Ian King  2018-11-07  521                        
DRM_INFO("Disabling CSR firmware and runtime PM\n");
e7351a84 Jani Nikula     2018-09-26  522                        return;
e7351a84 Jani Nikula     2018-09-26  523                }
e7351a84 Jani Nikula     2018-09-26  524  
d8a5b7d7 Jani Nikula     2018-09-26  525                csr->fw_path = 
i915_modparams.dmc_firmware_path;
d8a5b7d7 Jani Nikula     2018-09-26  526                /* Bypass version check 
for firmware override. */
d8a5b7d7 Jani Nikula     2018-09-26  527                csr->required_version = 
0;
d8a5b7d7 Jani Nikula     2018-09-26  528        }
dc174300 Suketu Shah     2015-04-17  529  
ad3c776b Imre Deak       2018-08-15  530        if (csr->fw_path == NULL) {
ad3c776b Imre Deak       2018-08-15  531                DRM_DEBUG_KMS("No known 
CSR firmware for platform, disabling runtime PM\n");
ad3c776b Imre Deak       2018-08-15 @532                
WARN_ON(!IS_ALPHA_SUPPORT(INTEL_INFO(dev_priv)));
ad3c776b Imre Deak       2018-08-15  533  
ad3c776b Imre Deak       2018-08-15  534                return;
ad3c776b Imre Deak       2018-08-15  535        }
ad3c776b Imre Deak       2018-08-15  536  
ad3c776b Imre Deak       2018-08-15  537        DRM_DEBUG_KMS("Loading %s\n", 
csr->fw_path);
8144ac59 Daniel Vetter   2015-10-28  538        
schedule_work(&dev_priv->csr.work);
eb805623 Daniel Vetter   2015-05-04  539  }
eb805623 Daniel Vetter   2015-05-04  540  

:::::: The code at line 532 was first introduced by commit
:::::: ad3c776b171078a10ace07616a34ed6266beb0e7 drm/i915: Fix PM refcounting 
w/o DMC firmware

:::::: TO: Imre Deak <[email protected]>
:::::: CC: Imre Deak <[email protected]>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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