Messages in this thread | | | Subject | RE: the patch of restore-pci-config-space-on-resume break S1 onASUS2400 NE | Date | Tue, 28 Dec 2004 12:01:04 +0800 | From | "Yu, Luming" <> |
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the idea in post http://sourceforge.net/mailarchive/message.php?msg_id=9091508 cure S1 resume hang for my ASUS2400NE.
I guess Len will accept it.
Does it imply IDE DMA could be started too early in the original resume code?
Thanks, Luming
-----Original Message----- From: Alan Cox [mailto:alan@lxorguk.ukuu.org.uk] Sent: 2004年12月27日 21:45 To: Yu, Luming Cc: Arjan van de Ven; Pavel Machek; Brown, Len; Li, Shaohua; Pallipadi, Venkatesh; Linux Kernel Mailing List; acpi-devel@lists.sourceforge.net; Fu, Michael Subject: RE: the patch of restore-pci-config-space-on-resume break S1 onASUS2400 NE
On Llu, 2004-12-27 at 10:14, Yu, Luming wrote: > Actually, the kernel (after removing restore-pci-config-space-on-resume patch) with option "ide=nodma" > can work with S1 suspend/resume without any hang so far. > So my suggestion for IDE driver is to disable DMA before entering S1, and enable > DMA after resuming from S1 if DMA was enabled. I need help from IDE guys to confirm it.
The IDE layer has no problem doing this, although it raises interesting questions about why it would be neccessary.
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