drivers/firmware/efi/sysfb_efi.c:190:35: warning: unused variable 'efifb_dmi_system_table'

From: kernel test robot
Date: Thu Nov 25 2021 - 18:17:02 EST

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Hi Randy,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 8ced7ca3570333998ad2088d5a6275701970e28e
commit: 15d27b15de965043d6f8e23bc7f34386fcd1a772 efi: sysfb_efi: fix build when EFI is not set
date: 4 months ago
config: x86_64-randconfig-a016-20210927 (https://download.01.org/0day-ci/archive/20211126/202111260716.zblungua-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=15d27b15de965043d6f8e23bc7f34386fcd1a772
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 15d27b15de965043d6f8e23bc7f34386fcd1a772
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

drivers/firmware/efi/sysfb_efi.c:72:6: warning: no previous prototype for function 'efifb_setup_from_dmi' [-Wmissing-prototypes]
void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
^
drivers/firmware/efi/sysfb_efi.c:72:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
^
static
>> drivers/firmware/efi/sysfb_efi.c:190:35: warning: unused variable 'efifb_dmi_system_table' [-Wunused-const-variable]
static const struct dmi_system_id efifb_dmi_system_table[] __initconst = {
^
>> drivers/firmware/efi/sysfb_efi.c:240:35: warning: unused variable 'efifb_dmi_swap_width_height' [-Wunused-const-variable]
static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
^
>> drivers/firmware/efi/sysfb_efi.c:331:39: warning: unused variable 'efifb_fwnode_ops' [-Wunused-const-variable]
static const struct fwnode_operations efifb_fwnode_ops = {
^
4 warnings generated.

vim +/efifb_dmi_system_table +190 drivers/firmware/efi/sysfb_efi.c

2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 178
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 179 #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 180 { \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 181 efifb_set_system, \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 182 name, \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 183 { \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 184 DMI_MATCH(DMI_BIOS_VENDOR, vendor), \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 185 DMI_MATCH(DMI_PRODUCT_NAME, name) \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 186 }, \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 187 &efifb_dmi_list[enumid] \
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 188 }
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 189
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 @190 static const struct dmi_system_id efifb_dmi_system_table[] __initconst = {
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 191 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 192 /* At least one of these two will be right; maybe both? */
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 193 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 194 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 195 /* At least one of these two will be right; maybe both? */
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 196 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 197 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 198 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 199 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 200 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 201 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 202 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 203 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 204 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 205 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 206 /* At least one of these two will be right; maybe both? */
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 207 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 208 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 209 /* At least one of these two will be right; maybe both? */
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 210 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 211 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 212 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 213 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 214 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 215 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 216 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 217 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 218 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 219 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 220 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 221 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 222 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 223 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 224 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 225 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 226 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 227 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 228 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 229 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 230 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 231 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2),
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 232 {},
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 233 };
2995e506276bfdc arch/x86/kernel/sysfb_efi.c David Herrmann 2013-08-02 234
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 235 /*
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 236 * Some devices have a portrait LCD but advertise a landscape resolution (and
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 237 * pitch). We simply swap width and height for these devices so that we can
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 238 * correctly deal with some of them coming with multiple resolutions.
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 239 */
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 @240 static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 241 {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 242 /*
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 243 * Lenovo MIIX310-10ICR, only some batches have the troublesome
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 244 * 800x1280 portrait screen. Luckily the portrait version has
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 245 * its own BIOS version, so we match on that.
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 246 */
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 247 .matches = {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 248 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 249 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 250 DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1HCN44WW"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 251 },
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 252 },
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 253 {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 254 /* Lenovo MIIX 320-10ICR with 800x1280 portrait screen */
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 255 .matches = {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 256 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 257 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 258 "Lenovo MIIX 320-10ICR"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 259 },
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 260 },
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 261 {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 262 /* Lenovo D330 with 800x1280 or 1200x1920 portrait screen */
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 263 .matches = {
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 264 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 265 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 266 "Lenovo ideapad D330-10IGM"),
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 267 },
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 268 },
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 269 {},
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 270 };
d02f1aa39189e06 arch/x86/kernel/sysfb_efi.c Hans de Goede 2019-07-21 271
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 272 static bool efifb_overlaps_pci_range(const struct of_pci_range *range)
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 273 {
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 274 u64 fb_base = screen_info.lfb_base;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 275
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 276 if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE)
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 277 fb_base |= (u64)(unsigned long)screen_info.ext_lfb_base << 32;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 278
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 279 return fb_base >= range->cpu_addr &&
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 280 fb_base < (range->cpu_addr + range->size);
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 281 }
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 282
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 283 static struct device_node *find_pci_overlap_node(void)
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 284 {
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 285 struct device_node *np;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 286
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 287 for_each_node_by_type(np, "pci") {
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 288 struct of_pci_range_parser parser;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 289 struct of_pci_range range;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 290 int err;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 291
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 292 err = of_pci_range_parser_init(&parser, np);
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 293 if (err) {
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 294 pr_warn("of_pci_range_parser_init() failed: %d\n", err);
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 295 continue;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 296 }
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 297
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 298 for_each_of_pci_range(&parser, &range)
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 299 if (efifb_overlaps_pci_range(&range))
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 300 return np;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 301 }
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 302 return NULL;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 303 }
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 304
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 305 /*
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 306 * If the efifb framebuffer is backed by a PCI graphics controller, we have
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 307 * to ensure that this relation is expressed using a device link when
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 308 * running in DT mode, or the probe order may be reversed, resulting in a
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 309 * resource reservation conflict on the memory window that the efifb
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 310 * framebuffer steals from the PCIe host bridge.
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 311 */
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 312 static int efifb_add_links(struct fwnode_handle *fwnode)
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 313 {
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 314 struct device_node *sup_np;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 315
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 316 sup_np = find_pci_overlap_node();
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 317
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 318 /*
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 319 * If there's no PCI graphics controller backing the efifb, we are
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 320 * done here.
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 321 */
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 322 if (!sup_np)
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 323 return 0;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 324
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 325 fwnode_link_add(fwnode, of_fwnode_handle(sup_np));
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 326 of_node_put(sup_np);
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 327
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 328 return 0;
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 329 }
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 330
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 @331 static const struct fwnode_operations efifb_fwnode_ops = {
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 332 .add_links = efifb_add_links,
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 333 };
8633ef82f101c04 drivers/firmware/efi/sysfb_efi.c Javier Martinez Canillas 2021-06-25 334

:::::: The code at line 190 was first introduced by commit
:::::: 2995e506276bfdc7311eb02db8b2aa1a61a4b849 x86: sysfb: move EFI quirks from efifb to sysfb

:::::: TO: David Herrmann <dh.herrmann@xxxxxxxxx>
:::::: CC: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>

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