On Wed, Feb 19, 2025 at 04:48:56PM +0100, Niklas Cassel wrote:
>
> Perhaps your could try with something like:
>
> diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
> index 3b303d4ae37a..bc2a317c97da 100644
> --- a/drivers/ata/libata-eh.c
> +++ b/drivers/ata/libata-eh.c
> @@ -1543,7 +1543,7 @@ unsigned int atapi_eh_request_sense(struct ata_device *dev,
> tf.command = ATA_CMD_PACKET;
>
> /* is it pointless to prefer PIO for "safety reasons"? */
> - if (ap->flags & ATA_FLAG_PIO_DMA) {
> + if (0) {
> tf.protocol = ATAPI_PROT_DMA;
> tf.feature |= ATAPI_PKT_DMA;
> } else {
>
> To see if NOT using DMA for PIO cmds makes any difference.
Or the big hammer:
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 8e895ae45c86..920462101775 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -249,7 +249,7 @@ enum {
/* ap->flags bits */
- AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
+ AHCI_FLAG_COMMON = ATA_FLAG_SATA |
ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
ICH_MAP = 0x90, /* ICH MAP register */
Just make sure to not use this on any system other than the machine that
you are debugging on.
Kind regards,
Niklas
