opti621: remove DMA support
PATCH 2/6 opti621: remove DMA support
These controllers don't support DMA.
Based on a bugreport from Juergen Kosel & inspired by pata_opti.c code.
Tested-by Juergen Kosel <[email protected]>
Signed-off-by Bartlomiej Zolnierkiewicz <[email protected]>
--- drivers/ide/pci/opti621.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
drivers/ide/pci/opti621.c +2 -6
@@ -324,18 +324,14 @@ static const struct ide_port_info opti62 .name = "OPTI621", .enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} }, .port_ops = &opti621_port_ops, - .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA, + .host_flags = IDE_HFLAG_NO_DMA, .pio_mask = ATA_PIO3, - .swdma_mask = ATA_SWDMA2, - .mwdma_mask = ATA_MWDMA2, }, { /* 1 */ .name = "OPTI621X", .enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} }, .port_ops = &opti621_port_ops, - .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA, + .host_flags = IDE_HFLAG_NO_DMA, .pio_mask = ATA_PIO3, - .swdma_mask = ATA_SWDMA2, - .mwdma_mask = ATA_MWDMA2, } };
Hello.
Quoted 8 lines · Bartlomiej Zolnierkiewicz
These controllers don't support DMA.
Based on a bugreport from Juergen Kosel & inspired by
pata_opti.ccode.Tested-by Juergen Kosel <[email protected]>Signed-off-by Bartlomiej Zolnierkiewicz <[email protected]>
Verily. I have the 82C621A datasheet.
Acked-by Sergei Shtylyov <[email protected]>
MBR, Sergei