Hi,
We have not heard any comments or inputs on this patch.
With regards,
Anil
On Sat, 2007-06-30 at 05:45 -0700, Anil K. Ravindranath wrote:
> Subject: [PATCH] aic7xxx driver. Restrict DMA to 32bit for 29320LPE
> Adaptec SCSI controller
>
> Contribution:
>
> Anil Ravindranath <anil_ravindranath@xxxxxxxxxxx>
>
> Issue:
>
> Data Bursts that cross from 32- to 64-Bit address space have incorrect
> address for 29320LPE. This leads to potential data corruption.
>
> Fix:
>
> Restrict DMA to 32bit so that it does not cross 4GB boundary.
>
> Change Log:
>
> Restrict DMA to 32bit for 29320LPE so that it does not cross 4GB
> boundary
>
> Patch: apply to scsi-misc-2.6.git development tree
>
> Signed off By: Anil Ravindranath <anil_ravindranath@xxxxxxxxxxx>
>
> diff -urN a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
> b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
> --- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c 2007-06-30
> 05:24:08.000000000 -0700
> +++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c 2007-06-30
> 05:25:40.000000000 -0700
> @@ -161,7 +161,10 @@
> }
> pci_set_master(pdev);
>
> - if (sizeof(dma_addr_t) > 4) {
> + /*
> + * Restrict DMA to 32bit for 29320LPE
> + */
> + if ((sizeof(dma_addr_t) > 4) && (entry->full_id !=
> ID_AHA_29320LPE)) {
> const u64 required_mask = dma_get_required_mask(dev);
>
> if (required_mask > DMA_39BIT_MASK &&
>
>
>
> diffstat output:
>
> aic79xx_osm_pci.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletion(-)
>
> With regards,
> Anil
-
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