From 97a9ea848016fef86e4a42dc6a65f4384eed32cd Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 20 Jan 2017 13:04:13 -0800 Subject: [PATCH] IB/core: Initialize ib_device.dev.parent earlier Move the ib_device.dev.parent initialization code from ib_device_register_sysfs() to ib_register_device(). Additionally, allow HBA drivers to set ib_device.dev.parent without setting ib_device.dma_device. This is the first step towards removing ib_device.dma_device. Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford --- drivers/infiniband/core/device.c | 8 ++++++++ drivers/infiniband/core/sysfs.c | 2 +- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 571974cd3919..d543c4390447 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -334,6 +334,14 @@ int ib_register_device(struct ib_device *device, struct ib_client *client; struct ib_udata uhw = {.outlen = 0, .inlen = 0}; + WARN_ON_ONCE(!device->dev.parent && !device->dma_device); + WARN_ON_ONCE(device->dev.parent && device->dma_device + && device->dev.parent != device->dma_device); + if (!device->dev.parent) + device->dev.parent = device->dma_device; + if (!device->dma_device) + device->dma_device = device->dev.parent; + mutex_lock(&device_mutex); if (strchr(device->name, '%')) { diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index c1fb545e8d78..daadf3130c9f 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -1258,7 +1258,7 @@ int ib_device_register_sysfs(struct ib_device *device, int ret; int i; - device->dev.parent = device->dma_device; + WARN_ON_ONCE(!device->dev.parent); ret = dev_set_name(class_dev, "%s", device->name); if (ret) return ret; -- 2.20.1