Messages in this thread Patch in this message | | | Subject | [PATCH]Teach drivers don't call may-sleep routines in resume code | From | Li Shaohua <> | Date | Wed, 17 Nov 2004 11:04:04 +0800 |
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Hi, We already found one driver (PCI link device driver) does the odd thing, so alert other drivers.
Thanks, Shaohua
--- 2.6/Documentation/power/devices.txt.orig 2004-11-17 10:42:25.160212832 +0800 +++ 2.6/Documentation/power/devices.txt 2004-11-17 10:46:11.070869192 +0800 @@ -70,6 +70,9 @@ System devices will only be suspended wi after all other devices have been suspended. On resume, they will be resumed before any other devices, and also with interrupts disabled. +*CAUTION*: The resume methods of drivers (normal devices and system devices) +should never use any may-sleep methods, since when resume from memory (S3), +no task is running. Runtime Power Management
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