iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pata_via: Blacklist some combinations of Transcend Flash and via

Browse Source 
Reported by Mikulas Patocka.

VIA VT82C586B + Transcend TS64GSSD25-M v0826 does not work in UDMA mode

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Alan Cox 2009-11-30 13:22:43 +00:00 committed by Jeff Garzik
parent 294264a942
commit 10734fc8d5
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/ata/pata_via.c
View File

@ -336,6 +336,32 @@ static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev)
via_do_set_mode(ap, adev, adev->dma_mode, tclock[mode], set_ast, udma[mode]); via_do_set_mode(ap, adev, adev->dma_mode, tclock[mode], set_ast, udma[mode]);
} }
/**
* via_mode_filter - filter buggy device/mode pairs
* @dev: ATA device
* @mask: Mode bitmask
*
* We need to apply some minimal filtering for old controllers and at least
* one breed of Transcend SSD. Return the updated mask.
*/
static unsigned long via_mode_filter(struct ata_device *dev, unsigned long mask)
{
struct ata_host *host = dev->link->ap->host;
const struct via_isa_bridge *config = host->private_data;
unsigned char model_num[ATA_ID_PROD_LEN + 1];
if (config->id == PCI_DEVICE_ID_VIA_82C586_0) {
ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
if (strcmp(model_num, "TS64GSSD25-M") == 0) {
ata_dev_printk(dev, KERN_WARNING,
"disabling UDMA mode due to reported lockups with this device.\n");
mask &= ~ ATA_MASK_UDMA;
}
}
return ata_bmdma_mode_filter(dev, mask);
}
/** /**
* via_tf_load - send taskfile registers to host controller * via_tf_load - send taskfile registers to host controller
* @ap: Port to which output is sent * @ap: Port to which output is sent
@ -427,6 +453,7 @@ static struct ata_port_operations via_port_ops = {
.prereset = via_pre_reset, .prereset = via_pre_reset,
.sff_tf_load = via_tf_load, .sff_tf_load = via_tf_load,
.port_start = via_port_start, .port_start = via_port_start,
.mode_filter = via_mode_filter,
}; };
static struct ata_port_operations via_port_ops_noirq = { static struct ata_port_operations via_port_ops_noirq = {