dmaengine/dw_dmac fix: dwc_scan_descriptors must compare first desc address also with llp

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dwc_scan_descriptors scans all descriptors from active_list in case transfer is
not completed.  It compares first_desc->lli.llp, and then all childrens of its
tx_list. But it doesn't compare its own address, i.e. first_desc->txd.phys, as
this is what we have initially programmed into the controller register. So this
causes dma to stop and finish a transfer, which was never started. And thus
fail.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

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Viresh Kumar 2011-03-24 11:32:15 +05:30 • committed by Vinod Koul

parent 3ea205c449

commit 84adccfb8c

1 changed files with 5 additions and 0 deletions

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drivers/dma/dw_dmac.c

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