[PATCH 04/31] x86/pci-nommu: handle page-less SG entries
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- To: torvalds@xxxxxxxxxxxxxxxxxxxx, axboe@xxxxxxxxx
- Subject: [PATCH 04/31] x86/pci-nommu: handle page-less SG entries
- From: Christoph Hellwig <hch@xxxxxx>
- Date: Wed, 12 Aug 2015 09:05:23 +0200
- Cc: dan.j.williams@xxxxxxxxx, vgupta@xxxxxxxxxxxx, hskinnemoen@xxxxxxxxx, egtvedt@xxxxxxxxxxxx, realmz6@xxxxxxxxx, dhowells@xxxxxxxxxx, monstr@xxxxxxxxx, x86@xxxxxxxxxx, dwmw2@xxxxxxxxxxxxx, alex.williamson@xxxxxxxxxx, grundler@xxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-metag@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, linux-nvdimm@xxxxxxxxxxx, linux-media@xxxxxxxxxxxxxxx
- In-reply-to: <1439363150-8661-1-git-send-email-hch@lst.de>
- List-id: <linux-ia64.vger.kernel.org>
- References: <1439363150-8661-1-git-send-email-hch@lst.de>
Just remove a BUG_ON, the code handles them just fine as-is.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
arch/x86/kernel/pci-nommu.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index da15918..a218059 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -63,7 +63,6 @@ static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg,
WARN_ON(nents == 0 || sg[0].length == 0);
for_each_sg(sg, s, nents, i) {
- BUG_ON(!sg_page(s));
s->dma_address = sg_phys(s);
if (!check_addr("map_sg", hwdev, s->dma_address, s->length))
return 0;
--
1.9.1
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