8:13 a.m.
tree: https://github.com/Freescale/linux-fslc pr/517
head: fdd91487f014d6f66a7db03f135056ada3552f27
commit: fef46455683f097673cd4eef816b185baf141dce [12427/22154] MLK-24206-3 usb: dwc3:
core: add fladj setting if SOFITPSYNC used
config: arc-buildonly-randconfig-r005-20220110
(https://download.01.org/0day-ci/archive/20220111/202201110535.9nsxOmxE-lk...)
compiler: arc-elf-gcc (GCC) 11.2.0
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://github.com/Freescale/linux-fslc/commit/fef46455683f097673cd4eef81...
git remote add freescale-fslc https://github.com/Freescale/linux-fslc
git fetch --no-tags freescale-fslc pr/517
git checkout fef46455683f097673cd4eef816b185baf141dce
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir
ARCH=arc SHELL=/bin/bash drivers/usb/dwc3/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
drivers/usb/dwc3/core.c: In function 'dwc3_frame_length_adjustment':
> drivers/usb/dwc3/core.c:339:32: warning: integer overflow in
expression of type 'long int' results in '-728182784' [-Woverflow]
339 | temp = 125000L * 1000000000L;
| ^
vim +339 drivers/usb/dwc3/core.c
304
305 /*
306 * dwc3_frame_length_adjustment - Adjusts frame length if required
307 * @dwc3: Pointer to our controller context structure
308 */
309 static void dwc3_frame_length_adjustment(struct dwc3 *dwc)
310 {
311 u32 reg;
312 u32 dft;
313
314 /*
315 * if GCTL.SOFITPSYNC is set to '1':
316 * FLADJ_REF_CLK_FLADJ=
317 * ((125000/ref_clk_period_integer)-(125000/ref_clk_period)) *
318 * ref_clk_period
319 * where
320 * - the ref_clk_period_integer is the integer value of
321 * the ref_clk period got by truncating the decimal (fractional)
322 * value that is programmed in the GUCTL.REF_CLK_PERIOD field.
323 * - the ref_clk_period is the ref_clk period including the fractional
324 * value.
325 */
326 if (dwc->soft_itp_sync_quirk) {
327 u32 ref_clk_hz, ref_clk_period_integer;
328 u64 temp;
329
330 reg = dwc3_readl(dwc->regs, DWC3_GFLADJ);
331 ref_clk_hz = clk_get_rate(dwc->clks[0].clk);
332 if (ref_clk_hz == 0) {
333 dev_err(dwc->dev, "ref clk is 0, can't set fladj\n");
334 return;
335 }
336
337 /* nano seconds the period of ref_clk */
338 ref_clk_period_integer = 1000000000 / ref_clk_hz;
339 temp = 125000L * 1000000000L;
340 temp = temp /
ref_clk_hz;
341 temp = temp / ref_clk_period_integer;
342 temp = temp - 125000;
343 temp = temp << GFLADJ_REFCLK_FLADJ_SHIFT;
344 reg &= ~GFLADJ_REFCLK_FLADJ_MASK;
345 reg |= temp;
346 dwc3_writel(dwc->regs, DWC3_GFLADJ, reg);
347
348 reg = dwc3_readl(dwc->regs, DWC3_GUCTL);
349 reg &= ~DWC3_GUCTL_REFCLKPER_MASK;
350 reg |= ref_clk_period_integer << DWC3_GUCTL_REFCLKPER_SHIFT;
351 dwc3_writel(dwc->regs, DWC3_GUCTL, reg);
352 }
353
354 if (dwc->revision < DWC3_REVISION_250A)
355 return;
356
357 if (dwc->fladj == 0)
358 return;
359
360 reg = dwc3_readl(dwc->regs, DWC3_GFLADJ);
361 dft = reg & DWC3_GFLADJ_30MHZ_MASK;
362 if (dft != dwc->fladj) {
363 reg &= ~DWC3_GFLADJ_30MHZ_MASK;
364 reg |= DWC3_GFLADJ_30MHZ_SDBND_SEL | dwc->fladj;
365 dwc3_writel(dwc->regs, DWC3_GFLADJ, reg);
366 }
367 }
368
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org