libata: Fix a large collection of DMA mode mismatches

[linux-2.6-omap-h63xx.git] / drivers / ata / pata_sc1200.c

diff --git a/drivers/ata/pata_sc1200.c b/drivers/ata/pata_sc1200.c
index 21ebc485ca4b4d71913a0ae302b35ba7f2924e35..0278fd2b8fb1cc8c80ba05bc1e638027a22d3a95 100644 (file)
--- a/drivers/ata/pata_sc1200.c
+++ b/drivers/ata/pata_sc1200.c
@@ -151,83 +151,45 @@ static void sc1200_set_dmamode(struct ata_port *ap, struct ata_device *adev)
 }
 
 /**
- *     sc1200_qc_issue_prot    -       command issue
+ *     sc1200_qc_issue         -       command issue
  *     @qc: command pending
  *
  *     Called when the libata layer is about to issue a command. We wrap
  *     this interface so that we can load the correct ATA timings if
- *     neccessary.  Specifically we have a problem that there is only
+ *     necessary.  Specifically we have a problem that there is only
  *     one MWDMA/UDMA bit.
  */
 
-static unsigned int sc1200_qc_issue_prot(struct ata_queued_cmd *qc)
+static unsigned int sc1200_qc_issue(struct ata_queued_cmd *qc)
 {
        struct ata_port *ap = qc->ap;
        struct ata_device *adev = qc->dev;
        struct ata_device *prev = ap->private_data;
 
        /* See if the DMA settings could be wrong */
-       if (adev->dma_mode != 0 && adev != prev && prev != NULL) {
+       if (ata_dma_enabled(adev) && adev != prev && prev != NULL) {
                /* Maybe, but do the channels match MWDMA/UDMA ? */
-               if ((adev->dma_mode >= XFER_UDMA_0 && prev->dma_mode < XFER_UDMA_0) ||
-                   (adev->dma_mode < XFER_UDMA_0 && prev->dma_mode >= XFER_UDMA_0))
+               if ((ata_using_udma(adev) && !ata_using_udma(prev)) ||
+                   (ata_using_udma(prev) && !ata_using_udma(adev)))
                        /* Switch the mode bits */
                        sc1200_set_dmamode(ap, adev);
        }
 
-       return ata_qc_issue_prot(qc);
+       return ata_sff_qc_issue(qc);
 }
 
 static struct scsi_host_template sc1200_sht = {
-       .module                 = THIS_MODULE,
-       .name                   = DRV_NAME,
-       .ioctl                  = ata_scsi_ioctl,
-       .queuecommand           = ata_scsi_queuecmd,
-       .can_queue              = ATA_DEF_QUEUE,
-       .this_id                = ATA_SHT_THIS_ID,
-       .sg_tablesize           = LIBATA_DUMB_MAX_PRD,
-       .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
-       .emulated               = ATA_SHT_EMULATED,
-       .use_clustering         = ATA_SHT_USE_CLUSTERING,
-       .proc_name              = DRV_NAME,
-       .dma_boundary           = ATA_DMA_BOUNDARY,
-       .slave_configure        = ata_scsi_slave_config,
-       .slave_destroy          = ata_scsi_slave_destroy,
-       .bios_param             = ata_std_bios_param,
+       ATA_BMDMA_SHT(DRV_NAME),
+       .sg_tablesize   = LIBATA_DUMB_MAX_PRD,
 };
 
 static struct ata_port_operations sc1200_port_ops = {
+       .inherits       = &ata_bmdma_port_ops,
+       .qc_prep        = ata_sff_dumb_qc_prep,
+       .qc_issue       = sc1200_qc_issue,
+       .cable_detect   = ata_cable_40wire,
        .set_piomode    = sc1200_set_piomode,
        .set_dmamode    = sc1200_set_dmamode,
-       .mode_filter    = ata_pci_default_filter,
-
-       .tf_load        = ata_tf_load,
-       .tf_read        = ata_tf_read,
-       .check_status   = ata_check_status,
-       .exec_command   = ata_exec_command,
-       .dev_select     = ata_std_dev_select,
-
-       .freeze         = ata_bmdma_freeze,
-       .thaw           = ata_bmdma_thaw,
-       .error_handler  = ata_bmdma_error_handler,
-       .post_internal_cmd = ata_bmdma_post_internal_cmd,
-       .cable_detect   = ata_cable_40wire,
-
-       .bmdma_setup    = ata_bmdma_setup,
-       .bmdma_start    = ata_bmdma_start,
-       .bmdma_stop     = ata_bmdma_stop,
-       .bmdma_status   = ata_bmdma_status,
-
-       .qc_prep        = ata_dumb_qc_prep,
-       .qc_issue       = sc1200_qc_issue_prot,
-
-       .data_xfer      = ata_data_xfer,
-
-       .irq_handler    = ata_interrupt,
-       .irq_clear      = ata_bmdma_irq_clear,
-       .irq_on         = ata_irq_on,
-
-       .port_start     = ata_sff_port_start,
 };
 
 /**
@@ -242,7 +204,6 @@ static struct ata_port_operations sc1200_port_ops = {
 static int sc1200_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
        static const struct ata_port_info info = {
-               .sht = &sc1200_sht,
                .flags = ATA_FLAG_SLAVE_POSS,
                .pio_mask = 0x1f,
                .mwdma_mask = 0x07,
@@ -252,7 +213,7 @@ static int sc1200_init_one(struct pci_dev *dev, const struct pci_device_id *id)
        /* Can't enable port 2 yet, see top comments */
        const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
 
-       return ata_pci_init_one(dev, ppi);
+       return ata_pci_sff_init_one(dev, ppi, &sc1200_sht, NULL);
 }
 
 static const struct pci_device_id sc1200[] = {