diff options
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/kernel-parameters.txt | 10 | ||||
-rw-r--r-- | Documentation/power/basic-pm-debugging.txt | 4 |
2 files changed, 12 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 98cf90f2631d..189df0bcab99 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt | |||
@@ -479,6 +479,16 @@ and is between 256 and 4096 characters. It is defined in the file | |||
479 | UART at the specified I/O port or MMIO address. | 479 | UART at the specified I/O port or MMIO address. |
480 | The options are the same as for ttyS, above. | 480 | The options are the same as for ttyS, above. |
481 | 481 | ||
482 | no_console_suspend | ||
483 | [HW] Never suspend the console | ||
484 | Disable suspending of consoles during suspend and | ||
485 | hibernate operations. Once disabled, debugging | ||
486 | messages can reach various consoles while the rest | ||
487 | of the system is being put to sleep (ie, while | ||
488 | debugging driver suspend/resume hooks). This may | ||
489 | not work reliably with all consoles, but is known | ||
490 | to work with serial and VGA consoles. | ||
491 | |||
482 | cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver | 492 | cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver |
483 | Format: | 493 | Format: |
484 | <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] | 494 | <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] |
diff --git a/Documentation/power/basic-pm-debugging.txt b/Documentation/power/basic-pm-debugging.txt index 1a85e2b964dc..57aef2f6e0de 100644 --- a/Documentation/power/basic-pm-debugging.txt +++ b/Documentation/power/basic-pm-debugging.txt | |||
@@ -78,8 +78,8 @@ c) Advanced debugging | |||
78 | In case the STD does not work on your system even in the minimal configuration | 78 | In case the STD does not work on your system even in the minimal configuration |
79 | and compiling more drivers as modules is not practical or some modules cannot | 79 | and compiling more drivers as modules is not practical or some modules cannot |
80 | be unloaded, you can use one of the more advanced debugging techniques to find | 80 | be unloaded, you can use one of the more advanced debugging techniques to find |
81 | the problem. First, if there is a serial port in your box, you can set the | 81 | the problem. First, if there is a serial port in your box, you can boot the |
82 | CONFIG_DISABLE_CONSOLE_SUSPEND kernel configuration option and try to log kernel | 82 | kernel with the 'no_console_suspend' parameter and try to log kernel |
83 | messages using the serial console. This may provide you with some information | 83 | messages using the serial console. This may provide you with some information |
84 | about the reasons of the suspend (resume) failure. Alternatively, it may be | 84 | about the reasons of the suspend (resume) failure. Alternatively, it may be |
85 | possible to use a FireWire port for debugging with firescope | 85 | possible to use a FireWire port for debugging with firescope |