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There is occasional suspend error from e1000e which blocks the system from further suspending. And the issue was found on a WhiskeyLake-U platform with I219-V: [ 20.078957] PM: pci_pm_suspend(): e1000e_pm_suspend+0x0/0x780 [e1000e] returns -2 [ 20.078970] PM: dpm_run_callback(): pci_pm_suspend+0x0/0x170 returns -2 [ 20.078974] e1000e 0000:00:1f.6: PM: pci_pm_suspend+0x0/0x170 returned -2 after 371012 usecs [ 20.078978] e1000e 0000:00:1f.6: PM: failed to suspend async: error -2 According to the code flow, this might be caused by broken MDI read/write to PHY registers. However currently the code does not tell us which register is broken. Thus enhance the debug information to print the offender PHY register. So the next the issue is reproduced, this information could be used for narrow down. Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Reported-by: Todd Brandt <todd.e.brandt@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Tested-by: Naama Meir <naamax.meir@linux.intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://lore.kernel.org/r/20220308172030.451566-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| .. | ||
| 80003es2lan.c | ||
| 80003es2lan.h | ||
| 82571.c | ||
| 82571.h | ||
| defines.h | ||
| e1000.h | ||
| ethtool.c | ||
| hw.h | ||
| ich8lan.c | ||
| ich8lan.h | ||
| mac.c | ||
| mac.h | ||
| Makefile | ||
| manage.c | ||
| manage.h | ||
| netdev.c | ||
| nvm.c | ||
| nvm.h | ||
| param.c | ||
| phy.c | ||
| phy.h | ||
| ptp.c | ||
| regs.h | ||