Messages in this thread Patch in this message | | | Date | Wed, 24 Nov 2004 11:25:57 +0100 | From | Pavel Machek <> | Subject | Re: [linux-pm] [PATCH] make pm_suspend_disk suspend/resume sysdev and dpm_off_irq |
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Hi!
> This patch makes the new swsusp code ( pm_suspend_disk since 2.6.9-rc3) > call suspend/resume functions for sysdev and devices in dpm_off_irq > list. > Otherwise, PCI link device in the system won't provide correct interrupt > for PCI > devices during resume.
I do not think this is right approach; you enable interrupts then disable that again, potentially without interrupt controller being initialized.
This should be better patch: Pavel
--- clean/kernel/power/swsusp.c 2004-10-19 14:16:29.000000000 +0200 +++ linux/kernel/power/swsusp.c 2004-11-23 23:11:04.000000000 +0100 @@ -854,11 +840,13 @@ if ((error = arch_prepare_suspend())) return error; local_irq_disable(); + sysdev_suspend(3); save_processor_state(); error = swsusp_arch_suspend(); /* Restore control flow magically appears here */ restore_processor_state(); restore_highmem(); + sysdev_resume(); local_irq_enable(); return error; } @@ -878,6 +866,7 @@ { int error; local_irq_disable(); + sysdev_suspend(3); /* We'll ignore saved state, but this gets preempt count (etc) right */ save_processor_state(); error = swsusp_arch_resume(); @@ -887,6 +876,7 @@ BUG_ON(!error); restore_processor_state(); restore_highmem(); + sysdev_resume(); local_irq_enable(); return error; }
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