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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 11:50:21 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 11:50:21 +0300 |
| commit | 341924049558e5f7c1a148a2c461a417933d35d9 (patch) | |
| tree | 1340b4f2131737ef4be63f18ee74cd73ad12cd3e /drivers/pci/p2pdma.c | |
| parent | 516337048fa40496ae5ca9863c367ec991a44d9a (diff) | |
| parent | 4a8f81b8c053aad250ee247b219904ada72df9a4 (diff) | |
| download | linux-341924049558e5f7c1a148a2c461a417933d35d9.tar.xz | |
Merge branch 'timers/vdso' into timers/core
so the hyper-v clocksource update can be applied.
Diffstat (limited to 'drivers/pci/p2pdma.c')
| -rw-r--r-- | drivers/pci/p2pdma.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index a98126ad9c3a..a4994aa3acc0 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -18,6 +18,7 @@ #include <linux/percpu-refcount.h> #include <linux/random.h> #include <linux/seq_buf.h> +#include <linux/iommu.h> struct pci_p2pdma { struct gen_pool *pool; @@ -299,6 +300,9 @@ static bool root_complex_whitelist(struct pci_dev *dev) struct pci_dev *root = pci_get_slot(host->bus, PCI_DEVFN(0, 0)); unsigned short vendor, device; + if (iommu_present(dev->dev.bus)) + return false; + if (!root) return false; |