From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============1038536842799625673==" MIME-Version: 1.0 From: kernel test robot Subject: Re: [PATCH 1/5] drm: Define DRM_FORMAT_MAX_PLANES Date: Fri, 16 Jul 2021 07:17:53 +0800 Message-ID: <202107160729.dsfkD3VR-lkp@intel.com> List-Id: To: kbuild@lists.01.org --===============1038536842799625673== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable CC: kbuild-all(a)lists.01.org In-Reply-To: <20210715180133.3675-2-tzimmermann@suse.de> References: <20210715180133.3675-2-tzimmermann@suse.de> TO: Thomas Zimmermann TO: maarten.lankhorst(a)linux.intel.com TO: mripard(a)kernel.org TO: airlied(a)linux.ie TO: daniel(a)ffwll.ch TO: noralf(a)tronnes.org TO: rodrigosiqueiramelo(a)gmail.com TO: melissa.srw(a)gmail.com TO: hamohammed.sa(a)gmail.com CC: Thomas Zimmermann CC: dri-devel(a)lists.freedesktop.org Hi Thomas, I love your patch! Perhaps something to improve: [auto build test WARNING on 4d00e2309398147acdbfefbe1deb4b0e78868466] url: https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-Prov= ide-framebuffer-vmap-helpers/20210716-020508 base: 4d00e2309398147acdbfefbe1deb4b0e78868466 :::::: branch date: 5 hours ago :::::: commit date: 5 hours ago compiler: hppa-linux-gcc (GCC) 10.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cppcheck possible warnings: (new ones prefixed by >>, may not real problems) >> drivers/gpu/drm/drm_gem_framebuffer_helper.c:192:14: warning: Unsigned v= ariable 'i' can't be negative so it is unnecessary to test it. [unsignedPos= itive] for (i--; i >=3D 0; i--) ^ vim +192 drivers/gpu/drm/drm_gem_framebuffer_helper.c 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 119 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 120 /** f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 121 * drm_gem_fb_init_wi= th_funcs() - Helper function for implementing 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 122 * &drm_mod= e_config_funcs.fb_create f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 123 * callback in c= ases when the driver f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 124 * allocates a s= ubclass of f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 125 * struct drm_fr= amebuffer 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 126 * @dev: DRM dev= ice f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 127 * @fb: framebuffer o= bject 2e187b2099034a Noralf Tr=C3=B8nnes 2017-09-22 128 * @file: DRM fi= le that holds the GEM handle(s) backing the framebuffer 2e187b2099034a Noralf Tr=C3=B8nnes 2017-09-22 129 * @mode_cmd: Me= tadata from the userspace framebuffer creation request 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 130 * @funcs: vtabl= e to be used for the new framebuffer object 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 131 * dbd62e16fd53d3 Noralf Tr=C3=B8nnes 2019-01-15 132 * This function= can be used to set &drm_framebuffer_funcs for drivers that need dbd62e16fd53d3 Noralf Tr=C3=B8nnes 2019-01-15 133 * custom frameb= uffer callbacks. Use drm_gem_fb_create() if you don't need to dbd62e16fd53d3 Noralf Tr=C3=B8nnes 2019-01-15 134 * change &drm_f= ramebuffer_funcs. The function does buffer size validation. f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 135 * The buffer size va= lidation is for a general case, though, so users should f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 136 * pay attention to t= he checks being appropriate for them or, at least, f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 137 * non-conflicting. 2e187b2099034a Noralf Tr=C3=B8nnes 2017-09-22 138 * 2e187b2099034a Noralf Tr=C3=B8nnes 2017-09-22 139 * Returns: f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 140 * Zero or a negative= error code. 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 141 */ f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 142 int drm_gem_fb_init_w= ith_funcs(struct drm_device *dev, f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 143 struct drm_= framebuffer *fb, f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 144 struct drm_= file *file, 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 145 const = struct drm_mode_fb_cmd2 *mode_cmd, 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 146 const = struct drm_framebuffer_funcs *funcs) 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 147 { 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 148 const struct dr= m_format_info *info; 6065e7036e073e Thomas Zimmermann 2021-07-15 149 struct drm_gem_objec= t *objs[DRM_FORMAT_MAX_PLANES]; 6065e7036e073e Thomas Zimmermann 2021-07-15 150 unsigned int i; 6065e7036e073e Thomas Zimmermann 2021-07-15 151 int ret; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 152 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 153 info =3D drm_ge= t_format_info(dev, mode_cmd); f7f525030854b1 Simon Ser 2021-05-03 154 if (!info) { f7f525030854b1 Simon Ser 2021-05-03 155 drm_dbg_kms(dev, "F= ailed to get FB format info\n"); f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 156 return -EINVAL; f7f525030854b1 Simon Ser 2021-05-03 157 } 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 158 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 159 for (i =3D 0; i= < info->num_planes; i++) { 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 160 unsigned int w= idth =3D mode_cmd->width / (i ? info->hsub : 1); 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 161 unsigned int h= eight =3D mode_cmd->height / (i ? info->vsub : 1); 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 162 unsigned int m= in_size; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 163 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 164 objs[i] =3D dr= m_gem_object_lookup(file, mode_cmd->handles[i]); 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 165 if (!objs[i]) { 24f03be4aa7922 Jani Nikula 2019-12-10 166 drm_dbg_kms(dev, "= Failed to lookup GEM object\n"); 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 167 ret =3D -ENOE= NT; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 168 goto err_gem_= object_put; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 169 } 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 170 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 171 min_size =3D (= height - 1) * mode_cmd->pitches[i] 042bf753842ddb Alexandru Gheorghe 2018-11-01 172 + drm_format_info= _min_pitch(info, i, width) 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 173 + mode_cmd->= offsets[i]; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 174 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 175 if (objs[i]->s= ize < min_size) { f7f525030854b1 Simon Ser 2021-05-03 176 drm_dbg_kms(dev, f7f525030854b1 Simon Ser 2021-05-03 177 "GEM object s= ize (%zu) smaller than minimum size (%u) for plane %d\n", f7f525030854b1 Simon Ser 2021-05-03 178 objs[i]->size= , min_size, i); be6ee102341bc4 Emil Velikov 2020-05-15 179 drm_gem_object_put= (objs[i]); 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 180 ret =3D -EINV= AL; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 181 goto err_gem_= object_put; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 182 } 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 183 } 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 184 = f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 185 ret =3D drm_gem_fb_i= nit(dev, fb, mode_cmd, objs, i, funcs); f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 186 if (ret) 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 187 goto err_gem_o= bject_put; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 188 = f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 189 return 0; 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 190 = 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 191 err_gem_object_p= ut: 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 @192 for (i--; i >= =3D 0; i--) be6ee102341bc4 Emil Velikov 2020-05-15 193 drm_gem_object_put(= objs[i]); 4c3dbb2c312c9f Noralf Tr=C3=B8nnes 2017-08-13 194 = f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 195 return ret; f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 196 } f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 197 EXPORT_SYMBOL_GPL(drm= _gem_fb_init_with_funcs); f2b816d78a9431 Andrzej Pietrasiewicz 2020-03-11 198 = --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============1038536842799625673==--