This fixes kernel crashing on NVIDIA Tegra if kernel is compiled in a multiplatform configuration and IPMMU-VMSA driver is enabled.
Cc: <[email protected]> # v3.20+ Signed-off-by: Dmitry Osipenko <[email protected]> --- drivers/iommu/ipmmu-vmsa.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 9e8495762bc8..78c50db9cd71 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -1109,12 +1109,19 @@ static struct platform_driver ipmmu_driver = { static int __init ipmmu_init(void) { + struct device_node *np; static bool setup_done; int ret; if (setup_done) return 0; + np = of_find_matching_node(NULL, ipmmu_of_ids); + if (!np) + return 0; + + of_node_put(np); + ret = platform_driver_register(&ipmmu_driver); if (ret < 0) return ret; -- 2.18.0 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
