From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [RFC] USB: PCI: set 32bit DMA mask for PCI based USB controllers From: Christoph Hellwig Message-Id: <20190130074059.GA29458@lst.de> Date: Wed, 30 Jan 2019 08:40:59 +0100 To: Hanjun Guo Cc: Greg Kroah-Hartman , Robin Murphy , Lorenzo Pieralisi , "Rafael J. Wysocki" , Bjorn Helgaas , Christoph Hellwig , linux-usb@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linuxarm@huawei.com, John Garry , Jonathan Cameron , anthony.jebson@huawei.com, Hanjun Guo List-ID: T24gV2VkLCBKYW4gMzAsIDIwMTkgYXQgMDM6MDE6NTRQTSArMDgwMCwgSGFuanVuIEd1byB3cm90 ZToKPiBUaGlzIGlzIHRoZSBSRkMgdmVyc2lvbiwgSSdtIG5vdCBzdXJlIHRoaXMgaXMgdGhlIGJl c3Qgc29sdXRpb24sCj4gY29tbWVudHMgYXJlIHdhcm1seSB3ZWxjb21lZC4KPiAKPiBUaGFua3MK PiBIYW5qdW4KPiAKPiAgZHJpdmVycy91c2IvY29yZS9oY2QtcGNpLmMgfCA0ICsrKysKPiAgMSBm aWxlIGNoYW5nZWQsIDQgaW5zZXJ0aW9ucygrKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3Vz Yi9jb3JlL2hjZC1wY2kuYyBiL2RyaXZlcnMvdXNiL2NvcmUvaGNkLXBjaS5jCj4gaW5kZXggMDM0 MzI0Ni4uYTljMzNlNiAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL3VzYi9jb3JlL2hjZC1wY2kuYwo+ ICsrKyBiL2RyaXZlcnMvdXNiL2NvcmUvaGNkLXBjaS5jCj4gQEAgLTE4OCw2ICsxODgsMTAgQEAg aW50IHVzYl9oY2RfcGNpX3Byb2JlKHN0cnVjdCBwY2lfZGV2ICpkZXYsIGNvbnN0IHN0cnVjdCBw Y2lfZGV2aWNlX2lkICppZCkKPiAgCWlmIChwY2lfZW5hYmxlX2RldmljZShkZXYpIDwgMCkKPiAg CQlyZXR1cm4gLUVOT0RFVjsKPiAgCj4gKwlyZXR2YWwgPSBkbWFfY29lcmNlX21hc2tfYW5kX2Nv aGVyZW50KCZkZXYtPmRldiwgRE1BX0JJVF9NQVNLKDMyKSk7Cj4gKwlpZiAocmV0dmFsKQo+ICsJ CXJldHVybiByZXR2YWw7CgpkbWFfY29lcmNlX21hc2tfYW5kX2NvaGVyZW50IGlzIG9ubHkgZm9y IHBsYXRmb3JtIGRldmljZXMgKGFuZCBJJ20Kbm90IHN1cmUgaXQgaXMgYSBnb29kIGlkZWEgdG8g c3RhcnQgd2l0aCwgYnV0IHRoYXQgaXMgYSBkaWZmZXJlbnQKc3RvcnkpLgoKUENJIGRldmljZSBz aG91bGQgaGF2ZSB0aGUgZG1hX21hc2sgcG9pbnRlciBzZXQgYWxyZWFkeSwgc28geW91IHNob3Vs ZAp1c2UgZG1hX3NldF9tYXNrX2FuZF9jb2hlcmVudCBoZXJlLgo=