Hi Artur,

https://git-scm.com/docs/git-format-patch ]

url:    
https://github.com/0day-ci/linux/commits/Artur-Petrosyan/usb-dwc2-Update-exit-hibernation-when-port-reset-is-asserted/20210415-144021
 
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git  
usb-testing
config: i386-randconfig-m021-20210415 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
Reported-by: Dan Carpenter <dan.carpen...@oracle.com>

smatch warnings:
drivers/usb/dwc2/platform.c:324 dwc2_driver_remove() error: potentially 
dereferencing uninitialized 'gr'.

vim +/gr +324 drivers/usb/dwc2/platform.c

5b9974b13e3648 drivers/staging/dwc2/platform.c Matthijs Kooijman  2013-04-22  
316  static int dwc2_driver_remove(struct platform_device *dev)
5b9974b13e3648 drivers/staging/dwc2/platform.c Matthijs Kooijman  2013-04-22  
317  {
5b9974b13e3648 drivers/staging/dwc2/platform.c Matthijs Kooijman  2013-04-22  
318       struct dwc2_hsotg *hsotg = platform_get_drvdata(dev);
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
319       struct dwc2_gregs_backup *gr;
                                                                                
                                  ^^
b46b1ef7b0da5c drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-08  
320       int ret = 0;
b46b1ef7b0da5c drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-08  
321  
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
322       /* Exit Hibernation when driver is removed. */
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
323       if (hsotg->hibernated) {
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15 
@324               if (gr->gotgctl & GOTGCTL_CURMODE_HOST) {
                                                                                
                    ^^^^^^^^^^^
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
325                       ret = dwc2_exit_hibernation(hsotg, 0, 0, 1);
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
326                       if (ret)
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
327                               dev_err(hsotg->dev,
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
328                                       "exit hibernation failed.\n");
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
329               } else {
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
330                       ret = dwc2_exit_hibernation(hsotg, 0, 0, 0);
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
331                       if (ret)
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
332                               dev_err(hsotg->dev,
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
333                                       "exit hibernation failed.\n");
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
334               }
8e4dbc0200040a drivers/usb/dwc2/platform.c     Artur Petrosyan    2021-04-15  
335       }

---
0-DAY CI Kernel Test Service, Intel Corporation
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