Ahoi,
The following patch fixes a crash caused by attempting to bounce buffer
when an IDE CD-ROM is used on a machine with an IO-MMU. [At least, this
patch fixes things so I can use my IDE CD-ROM behind an ns87415 on a
HP PA-RISC workstation.]
Why was this only allowed for disks?
--- a/drivers/ide/ide-lib.c 18 Jul 2005 18:46:30 -0000
+++ b/drivers/ide/ide-lib.c 6 Aug 2005 20:28:04 -0000
@@ -410,7 +410,7 @@ void ide_toggle_bounce(ide_drive_t *driv
{
u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
- if (on && drive->media == ide_disk) {
+ if (on) {
if (!PCI_DMA_BUS_IS_PHYS)
addr = BLK_BOUNCE_ANY;
else if (HWIF(drive)->pci_dev)
Cheers,
--
Kyle McMartin
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