| Message ID | 1442826392-9082-1-git-send-email-robert.jarzmik@free.fr (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Sep 21, 2015 at 11:06:32AM +0200, Robert Jarzmik wrote: > Since the commit to have an allocated list of virtual descriptors was > reverted, the pxa_dma driver is broken, as it assumes the descriptor is > placed on the allocated list upon allocation. > > Fix the issue in pxa_dma by making an allocated virtual descriptor a > singleton. This seems okay, simpler and safer. Do you want me to apply this instead while detailed approach can be reviewed and discussed
Vinod Koul <vinod.koul@intel.com> writes: > On Mon, Sep 21, 2015 at 11:06:32AM +0200, Robert Jarzmik wrote: >> Since the commit to have an allocated list of virtual descriptors was >> reverted, the pxa_dma driver is broken, as it assumes the descriptor is >> placed on the allocated list upon allocation. >> >> Fix the issue in pxa_dma by making an allocated virtual descriptor a >> singleton. > > This seems okay, simpler and safer. Do you want me to apply this instead > while detailed approach can be reviewed and discussed Yes, please. Having the guarantee this gets into the next or next after next -rc will enable me to do my pull request, and repair pxa. Cheers.
On Thu, Sep 24, 2015 at 09:39:32PM +0200, Robert Jarzmik wrote: > Vinod Koul <vinod.koul@intel.com> writes: > > > On Mon, Sep 21, 2015 at 11:06:32AM +0200, Robert Jarzmik wrote: > >> Since the commit to have an allocated list of virtual descriptors was > >> reverted, the pxa_dma driver is broken, as it assumes the descriptor is > >> placed on the allocated list upon allocation. > >> > >> Fix the issue in pxa_dma by making an allocated virtual descriptor a > >> singleton. > > > > This seems okay, simpler and safer. Do you want me to apply this instead > > while detailed approach can be reviewed and discussed > Yes, please. Having the guarantee this gets into the next or next after next -rc > will enable me to do my pull request, and repair pxa. Applied, thanks
diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 9d3458e2a366..53c05ca514f1 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -891,6 +891,7 @@ pxad_tx_prep(struct virt_dma_chan *vc, struct virt_dma_desc *vd, struct dma_async_tx_descriptor *tx; struct pxad_chan *chan = container_of(vc, struct pxad_chan, vc); + INIT_LIST_HEAD(&vd->node); tx = vchan_tx_prep(vc, vd, tx_flags); tx->tx_submit = pxad_tx_submit; dev_dbg(&chan->vc.chan.dev->device,
Since the commit to have an allocated list of virtual descriptors was reverted, the pxa_dma driver is broken, as it assumes the descriptor is placed on the allocated list upon allocation. Fix the issue in pxa_dma by making an allocated virtual descriptor a singleton. Fixes: 8c8fe97b2b8a ("Revert "dmaengine: virt-dma: don't always free descriptor upon completion"") Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> --- Vinod, this is my fallback plan as I'm getting no answer on https://lkml.org/lkml/2015/9/6/112. If I get no answer before v4.3-rc3, I'll put that into the pxa tree. --- drivers/dma/pxa_dma.c | 1 + 1 file changed, 1 insertion(+)