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authorChristoph Hellwig <hch@lst.de>2020-08-10 14:48:43 +0200
committerBjorn Helgaas <bhelgaas@google.com>2020-08-18 00:08:21 +0200
commit7c2308f79fc81ba0bf24ccd2429fb483a91bcd51 (patch)
treeb420a25186ab87fa1f8873a4db26f871aba55db1 /drivers
parentLinux 5.9-rc1 (diff)
downloadlinux-7c2308f79fc81ba0bf24ccd2429fb483a91bcd51.tar.xz
linux-7c2308f79fc81ba0bf24ccd2429fb483a91bcd51.zip
PCI/P2PDMA: Fix build without DMA ops
My commit to make DMA ops support optional missed the reference in the p2pdma code. And while the build bot didn't manage to find a config where this can happen, Matthew did. Fix this by replacing two IS_ENABLED checks with ifdefs. Fixes: 2f9237d4f6df ("dma-mapping: make support for dma ops optional") Link: https://lore.kernel.org/r/20200810124843.1532738-1-hch@lst.de Reported-by: Matthew Wilcox <willy@infradead.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/p2pdma.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 64ebed129dbf..f357f9a32b3a 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -556,13 +556,14 @@ int pci_p2pdma_distance_many(struct pci_dev *provider, struct device **clients,
return -1;
for (i = 0; i < num_clients; i++) {
- if (IS_ENABLED(CONFIG_DMA_VIRT_OPS) &&
- clients[i]->dma_ops == &dma_virt_ops) {
+#ifdef CONFIG_DMA_VIRT_OPS
+ if (clients[i]->dma_ops == &dma_virt_ops) {
if (verbose)
dev_warn(clients[i],
"cannot be used for peer-to-peer DMA because the driver makes use of dma_virt_ops\n");
return -1;
}
+#endif
pci_client = find_parent_pci_dev(clients[i]);
if (!pci_client) {
@@ -842,9 +843,10 @@ static int __pci_p2pdma_map_sg(struct pci_p2pdma_pagemap *p2p_pgmap,
* this should never happen because it will be prevented
* by the check in pci_p2pdma_distance_many()
*/
- if (WARN_ON_ONCE(IS_ENABLED(CONFIG_DMA_VIRT_OPS) &&
- dev->dma_ops == &dma_virt_ops))
+#ifdef CONFIG_DMA_VIRT_OPS
+ if (WARN_ON_ONCE(dev->dma_ops == &dma_virt_ops))
return 0;
+#endif
for_each_sg(sg, s, nents, i) {
paddr = sg_phys(s);