Re: [PATCH v1 2/6] bus: mhi: core: Mark device inactive soon after host issues a shutdown

From: kbuild test robot
Date: Thu May 21 2020 - 02:20:39 EST

Hi Bhaumik,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20200519]
[cannot apply to linus/master v5.7-rc6 v5.7-rc5 v5.7-rc4 v5.7-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Bhaumik-Bhatt/Bug-fixes-and-bootup-and-shutdown-improvements/20200520-083400
base: fb57b1fabcb28f358901b2df90abd2b48abc1ca8
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> drivers/bus/mhi/core/main.c:397:8: error: implicit declaration of function 'mhi_is_active' [-Werror,-Wimplicit-function-declaration]
if (!mhi_is_active(mhi_cntrl)) {
^
1 error generated.

vim +/mhi_is_active +397 drivers/bus/mhi/core/main.c

371
372 irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *priv)
373 {
374 struct mhi_controller *mhi_cntrl = priv;
375 struct device *dev = &mhi_cntrl->mhi_dev->dev;
376 enum mhi_state state = MHI_STATE_MAX;
377 enum mhi_pm_state pm_state = 0;
378 enum mhi_ee_type ee = 0;
379 bool handle_rddm = false;
380
381 write_lock_irq(&mhi_cntrl->pm_lock);
382 if (!MHI_REG_ACCESS_VALID(mhi_cntrl->pm_state)) {
383 write_unlock_irq(&mhi_cntrl->pm_lock);
384 goto exit_intvec;
385 }
386
387 state = mhi_get_mhi_state(mhi_cntrl);
388 ee = mhi_cntrl->ee;
389 mhi_cntrl->ee = mhi_get_exec_env(mhi_cntrl);
390 dev_dbg(dev, "local ee:%s device ee:%s dev_state:%s\n",
391 TO_MHI_EXEC_STR(mhi_cntrl->ee), TO_MHI_EXEC_STR(ee),
392 TO_MHI_STATE_STR(state));
393
394 /* If device supports RDDM don't bother processing SYS error */
395 if (mhi_cntrl->rddm_image) {
396 /* host may be performing a device power down already */
> 397 if (!mhi_is_active(mhi_cntrl)) {
398 write_unlock_irq(&mhi_cntrl->pm_lock);
399 goto exit_intvec;
400 }
401
402 if (mhi_cntrl->ee == MHI_EE_RDDM && mhi_cntrl->ee != ee) {
403 /* prevent clients from queueing any more packets */
404 pm_state = mhi_tryset_pm_state(mhi_cntrl,
405 MHI_PM_SYS_ERR_DETECT);
406 if (pm_state == MHI_PM_SYS_ERR_DETECT)
407 handle_rddm = true;
408 }
409
410 write_unlock_irq(&mhi_cntrl->pm_lock);
411
412 if (handle_rddm) {
413 dev_err(dev, "RDDM event occurred!\n");
414 mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_EE_RDDM);
415 wake_up_all(&mhi_cntrl->state_event);
416 }
417 goto exit_intvec;
418 }
419
420 if (state == MHI_STATE_SYS_ERR) {
421 dev_dbg(dev, "System error detected\n");
422 pm_state = mhi_tryset_pm_state(mhi_cntrl,
423 MHI_PM_SYS_ERR_DETECT);
424 }
425
426 write_unlock_irq(&mhi_cntrl->pm_lock);
427
428 if (pm_state == MHI_PM_SYS_ERR_DETECT) {
429 wake_up_all(&mhi_cntrl->state_event);
430
431 /* For fatal errors, we let controller decide next step */
432 if (MHI_IN_PBL(ee))
433 mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
434 else
435 mhi_pm_sys_err_handler(mhi_cntrl);
436 }
437
438 exit_intvec:
439
440 return IRQ_HANDLED;
441 }
442

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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