https://github.com/torvalds/linux
Revision bce7d5e0e1fc0c1f1251b7f21a19cb48207408b6 authored by Jeff Norden on 04 September 2007, 16:07:20 UTC, committed by Jeff Garzik on 11 September 2007, 01:53:00 UTC
Fix "lost" interrupt problem when using dma with CD/DVD drives in some
configurations.  This problem can make installing linux from media
impossible for distro's that have switched to libata-only configurations.

The simple fix is to eliminate the use of dma for reading drive status, etc,
by checking the number of bytes to transferred.

This change will only affect the behavior of atapi devices, not disks.
There is more info at http://bugzilla.redhat.com/show_bug.cgi?id=242229
This patch is for 2.6.22.1

Signed-off-by: Jeff Norden <jnorden@math.tntech.edu>
Reviewed-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
1 parent 08ebd43
History
Tip revision: bce7d5e0e1fc0c1f1251b7f21a19cb48207408b6 authored by Jeff Norden on 04 September 2007, 16:07:20 UTC
pata_it821x: fix lost interrupt with atapi devices
Tip revision: bce7d5e
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