From 9e8808a99c6decdb4ab78081a26d3752339f424c Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 18 Jan 2010 18:13:57 +0100 Subject: [PATCH] libata: fix CFA handling in ide_timing_compute() Use standard cycle timing for CFA PIO5 and PIO6 modes. Based on commit 74638c8 for IDE subsystem. Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 6728328f3bea..9c77b0d1a9d0 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3211,6 +3211,7 @@ const struct ata_timing *ata_timing_find_mode(u8 xfer_mode) int ata_timing_compute(struct ata_device *adev, unsigned short speed, struct ata_timing *t, int T, int UT) { + const u16 *id = adev->id; const struct ata_timing *s; struct ata_timing p; @@ -3228,14 +3229,18 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed, * PIO/MW_DMA cycle timing. */ - if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */ + if (id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */ memset(&p, 0, sizeof(p)); + if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) { - if (speed <= XFER_PIO_2) p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO]; - else p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO_IORDY]; - } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) { - p.cycle = adev->id[ATA_ID_EIDE_DMA_MIN]; - } + if (speed <= XFER_PIO_2) + p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO]; + else if ((speed <= XFER_PIO_4) || + (speed == XFER_PIO_5 && !ata_id_is_cfa(id))) + p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO_IORDY]; + } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) + p.cycle = id[ATA_ID_EIDE_DMA_MIN]; + ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B); } -- 2.20.1