Hi Adrien, [auto build test WARNING on hid/for-next] [also build test WARNING on v4.4-rc2 next-20151124] url: https://github.com/0day-ci/linux/commits/Adrien-Verg/Fixes-for-ELAN-touchscreens/20151124-230537 base: https://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid.git for-next config: avr32-hammerhead_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=avr32 All warnings (new ones prefixed by >>): drivers/hid/usbhid/hid-quirks.c: In function 'usbhid_exists_squirk': >> drivers/hid/usbhid/hid-quirks.c:339: warning: comparison is always false due to limited range of data type vim +339 drivers/hid/usbhid/hid-quirks.c 323 * @idProduct: the 16-bit USB product ID, in native byteorder 324 * 325 * Description: 326 * Given a USB vendor ID and product ID, return a pointer to 327 * the hid_blacklist entry associated with that device. 328 * 329 * Returns: pointer if quirk found, or NULL if no quirks found. 330 */ 331 static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor, 332 const u16 idProduct) 333 { 334 const struct hid_blacklist *bl_entry = NULL; 335 int n = 0; 336 337 for (; hid_blacklist[n].idVendor; n++) 338 if (hid_blacklist[n].idVendor == idVendor && > 339 (hid_blacklist[n].idProduct == HID_ANY_ID || 340 hid_blacklist[n].idProduct == idProduct)) 341 bl_entry = &hid_blacklist[n]; 342 343 if (bl_entry != NULL) 344 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", 345 bl_entry->quirks, bl_entry->idVendor, 346 bl_entry->idProduct); 347 return bl_entry; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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