On Fri, Sep 27, 2013 at 05:10:02PM +0100, Stefano Stabellini wrote: > Signed-off-by: Stefano Stabellini <stefano.stabell...@eu.citrix.com> > --- > drivers/xen/swiotlb-xen.c | 1 + > lib/swiotlb.c | 1 + > 2 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c > index 96ad316..790c2eb 100644 > --- a/drivers/xen/swiotlb-xen.c > +++ b/drivers/xen/swiotlb-xen.c > @@ -674,6 +674,7 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct > scatterlist *sgl, > sg->length, > dir); > if (map == SWIOTLB_MAP_ERROR) { > + pr_warn("swiotlb buffer is full\n");
It would be beneficial to use dev_warn instead. And perhaps even call debug_dma_dump_mappings to help in diagnosing a problem? > /* Don't panic here, we expect map_sg users > to do proper error handling. */ > xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir, > diff --git a/lib/swiotlb.c b/lib/swiotlb.c > index eb45d17..f06da0d 100644 > --- a/lib/swiotlb.c > +++ b/lib/swiotlb.c > @@ -502,6 +502,7 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, > > not_found: > spin_unlock_irqrestore(&io_tlb_lock, flags); > + pr_warn("swiotlb buffer is full\n"); > return SWIOTLB_MAP_ERROR; > found: > spin_unlock_irqrestore(&io_tlb_lock, flags); > -- > 1.7.2.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/