Messages in this thread | | | From | "Richard Purdie" <> | Subject | Re: Flaw in ide_unregister() | Date | Sun, 9 Jan 2005 22:37:20 -0000 |
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Alan Cox: [Re: ide_unregister and problems with ide-cs.c] > In 2.6.9-ac and 2.6.10-ac the ide_unregister_hwif calls return an error > if the drive is in use. At this point the ide-cs code still throws it > away. The -ac code IDE also adds "removed_hwif_iops" so the bits are > there for the correct result which is something like > > if(ide_unregister_hwif(hwif) < 0 { > printk("Whine whine..."); > removed_hwif_ops(hwif); > while(ide_unregister_hwif(hwif) < 0) > msleep(1000); > }
I've just tried 2.6.10-ac8 on my target (an arm PDA) and it doesn't help ide-cs.c. When I pull out a mounted CF out the socket, the kernel prints "Unregister 0 fail 1 0" repeatedly on the console showing the usage count permanently stays at 1. This is the same problem as under 2.6.10.
I haven't investigated it yet but I suspect the usage count is held by ide-disk as the CF card has a mounted filesystem. As previously mentioned and for reference, this patch has the changes I had to make to get standard 2.6.10 to work:
http://www.rpsys.net/openzaurus/2.6.10/ide_fixes-r1.patch
Richard
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