forked from luck/tmp_suning_uos_patched
ide-timings: use ->pio_mode value to determine fastest PIO speed
Use the current PIO mode value instead of the physical maximum one to determine the fastest allowed PIO for shared PIO/DMA timings. Affected host drivers: amd74xx and via82cxxx. [ Update comment to match -DaveM ] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
8776168ca2
commit
8e714a074b
@ -186,11 +186,10 @@ int ide_timing_compute(ide_drive_t *drive, u8 speed,
|
|||||||
/*
|
/*
|
||||||
* Even in DMA/UDMA modes we still use PIO access for IDENTIFY,
|
* Even in DMA/UDMA modes we still use PIO access for IDENTIFY,
|
||||||
* S.M.A.R.T and some other commands. We have to ensure that the
|
* S.M.A.R.T and some other commands. We have to ensure that the
|
||||||
* DMA cycle timing is slower/equal than the fastest PIO timing.
|
* DMA cycle timing is slower/equal than the current PIO timing.
|
||||||
*/
|
*/
|
||||||
if (speed >= XFER_SW_DMA_0) {
|
if (speed >= XFER_SW_DMA_0) {
|
||||||
u8 pio = ide_get_best_pio_mode(drive, 255, 5);
|
ide_timing_compute(drive, drive->pio_mode, &p, T, UT);
|
||||||
ide_timing_compute(drive, XFER_PIO_0 + pio, &p, T, UT);
|
|
||||||
ide_timing_merge(&p, t, t, IDE_TIMING_ALL);
|
ide_timing_merge(&p, t, t, IDE_TIMING_ALL);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user