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SubjectRe: [PATCH 1/3] scsi : megaraid_{mm,mbox}: 64-bit DMA capability checker
Ju, Seokmann wrote:
> Hi,
> With patch, the driver access PCIconfiguration space with dedicated
> offset to read a signature. If the signature read, it means that the
> controller has capability to handle 64-bit DMA.
> Without this patch, the driver blindly claimed 64-bit DMA capability
> without checking with controller.
> The issue has been reported by Vasily Averin.

> + if (((magic64 == HBA_SIGNATURE_64_BIT) &&
> + (adapter->pdev->subsystem_device !=
> + PCI_SUBSYS_ID_MEGARAID_SATA_150_6)) ||

I would note that I've reported about issue on SATA_150_4 device. I can also
accept that similar patch fixes this issue.

> + (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
> + adapter->pdev->device == PCI_DEVICE_ID_VERDE) ||
> + (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
> + adapter->pdev->device == PCI_DEVICE_ID_DOBSON) ||
> + (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
> + adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) ||
> + (adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
> + adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) ||
> + (adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
> + adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) {

Thank you,
Vasily Averin

SWsoft Virtuozzo/OpenVZ Linux kernel team
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