Re: [PATCH] libata: fix ata_dma_enabled
From: Alan Cox <hidden>
Date: 2012-12-03 01:17:35
On Mon, 03 Dec 2012 09:04:20 +0800 Aaron Lu [off-list ref] wrote:
ata_dma_enabled should check if device is either using multi word DMA or ultra DMA instead of checking 0xff, as dma_mode 0 is not a valid dma mode either. This patch fixes the following bug: https://bugzilla.kernel.org/show_bug.cgi?id=49151
NAK dma_mode should *NEVER* be zero. If it's getting set to zero you have another bug and that needs fixing instead Alan