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: usb: musb: call pm_runtime_{get,put}_sync before reading vbus registers From: Bin Liu Message-Id: <20180226173833.GC20609@uda0271908> Date: Mon, 26 Feb 2018 11:38:33 -0600 To: Merlijn Wajer Cc: linux-omap@vger.kernel.org, tony@atomide.com, Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: T24gTW9uLCBGZWIgMjYsIDIwMTggYXQgMDY6MTk6MzBQTSArMDEwMCwgTWVybGlqbiBXYWplciB3 cm90ZToKPiBIaSwKPiAKPiBPbiAyNi8wMi8xOCAxNjo1NywgQmluIExpdSB3cm90ZToKPiA+IEhp LAo+ID4gCj4gPiBPbiBNb24sIEZlYiAyNiwgMjAxOCBhdCAxMTo1NjowOEFNICswMTAwLCBNZXJs aWpuIFdhamVyIHdyb3RlOgo+ID4+IFdpdGhvdXQgcG1fcnVudGltZV97Z2V0LHB1dH1fc3luYyBj YWxscyBpbiBwbGFjZSwgcmVhZGluZwo+ID4+IHZidXMgc3RhdHVzIHZpYSAvc3lzIGNhdXNlcyB0 aGUgZm9sbG93aW5nIGVycm9yOgo+ID4+Cj4gPj4gVW5oYW5kbGVkIGZhdWx0OiBleHRlcm5hbCBh Ym9ydCBvbiBub24tbGluZWZldGNoICgweDEwMjgpIGF0IDB4ZmEwYWIwNjAKPiA+PiBwZ2QgPSBi MzMzZTgyMgo+ID4+IFtmYTBhYjA2MF0gKnBnZD00ODAxMTQ1MihiYWQpCj4gPj4KPiA+PiBbPGMw NTI2MWIwPl0gKG11c2JfZGVmYXVsdF9yZWFkYikgZnJvbSBbPGMwNTI1YmQwPl0gKG11c2JfdmJ1 c19zaG93KzB4NTgvMHhlNCkKPiA+PiBbPGMwNTI1YmQwPl0gKG11c2JfdmJ1c19zaG93KSBmcm9t IFs8YzA0YzAxNDg+XSAoZGV2X2F0dHJfc2hvdysweDIwLzB4NDQpCj4gPj4gWzxjMDRjMDE0OD5d IChkZXZfYXR0cl9zaG93KSBmcm9tIFs8YzAyNTlmNzQ+XSAoc3lzZnNfa2Zfc2VxX3Nob3crMHg4 MC8weGRjKQo+ID4+IFs8YzAyNTlmNzQ+XSAoc3lzZnNfa2Zfc2VxX3Nob3cpIGZyb20gWzxjMDIx MGJhYz5dIChzZXFfcmVhZCsweDI1MC8weDQ0OCkKPiA+PiBbPGMwMjEwYmFjPl0gKHNlcV9yZWFk KSBmcm9tIFs8YzAxZWRiNDA+XSAoX192ZnNfcmVhZCsweDFjLzB4MTE4KQo+ID4+IFs8YzAxZWRi NDA+XSAoX192ZnNfcmVhZCkgZnJvbSBbPGMwMWVkY2NjPl0gKHZmc19yZWFkKzB4OTAvMHgxNDQp Cj4gPj4gWzxjMDFlZGNjYz5dICh2ZnNfcmVhZCkgZnJvbSBbPGMwMWVlMWQwPl0gKFN5U19yZWFk KzB4M2MvMHg3NCkKPiA+PiBbPGMwMWVlMWQwPl0gKFN5U19yZWFkKSBmcm9tIFs8YzAxMDZmZTA+ XSAocmV0X2Zhc3Rfc3lzY2FsbCsweDAvMHg1NCkKPiA+Pgo+ID4+IFNvbHV0aW9uIHdhcyBzdWdn ZXN0ZWQgYnkgVG9ueSBMaW5kZ3JlbiA8dG9ueUBhdG9taWRlLmNvbT4uCj4gPj4KPiA+PiBTaWdu ZWQtb2ZmLWJ5OiBNZXJsaWpuIFdhamVyIDxtZXJsaWpuQHdpenp1cC5vcmc+Cj4gPj4gLS0tCj4g Pj4gIGRyaXZlcnMvdXNiL211c2IvbXVzYl9jb3JlLmMgfCA0ICsrKysKPiA+PiAgMSBmaWxlIGNo YW5nZWQsIDQgaW5zZXJ0aW9ucygrKQo+ID4+Cj4gPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNi L211c2IvbXVzYl9jb3JlLmMgYi9kcml2ZXJzL3VzYi9tdXNiL211c2JfY29yZS5jCj4gPj4gaW5k ZXggZWVmNGFkNTc4YjMxLi5jZWFhNDBlZjBlNzMgMTAwNjQ0Cj4gPj4gLS0tIGEvZHJpdmVycy91 c2IvbXVzYi9tdXNiX2NvcmUuYwo+ID4+ICsrKyBiL2RyaXZlcnMvdXNiL211c2IvbXVzYl9jb3Jl LmMKPiA+PiBAQCAtMTc2MCw2ICsxNzYwLDggQEAgdmJ1c19zaG93KHN0cnVjdCBkZXZpY2UgKmRl diwgc3RydWN0IGRldmljZV9hdHRyaWJ1dGUgKmF0dHIsIGNoYXIgKmJ1ZikKPiA+PiAgCXZhbCA9 IG11c2ItPmFfd2FpdF9iY29uOwo+ID4+ICAJdmJ1cyA9IG11c2JfcGxhdGZvcm1fZ2V0X3ZidXNf c3RhdHVzKG11c2IpOwo+ID4+ICAJaWYgKHZidXMgPCAwKSB7Cj4gPj4gKwkJcG1fcnVudGltZV9n ZXRfc3luYyhkZXYpOwo+ID4+ICsKPiA+PiAgCQkvKiBVc2UgZGVmYXVsdCBNVVNCIG1ldGhvZCBi eSBtZWFucyBvZiBERVZDVEwgcmVnaXN0ZXIgKi8KPiA+PiAgCQlkZXZjdGwgPSBtdXNiX3JlYWRi KG11c2ItPm1yZWdzLCBNVVNCX0RFVkNUTCk7Cj4gPj4gIAkJaWYgKChkZXZjdGwgJiBNVVNCX0RF VkNUTF9WQlVTKQo+ID4+IEBAIC0xNzY3LDYgKzE3NjksOCBAQCB2YnVzX3Nob3coc3RydWN0IGRl dmljZSAqZGV2LCBzdHJ1Y3QgZGV2aWNlX2F0dHJpYnV0ZSAqYXR0ciwgY2hhciAqYnVmKQo+ID4+ ICAJCQl2YnVzID0gMTsKPiA+PiAgCQllbHNlCj4gPj4gIAkJCXZidXMgPSAwOwo+ID4+ICsKPiA+ PiArCQlwbV9ydW50aW1lX3B1dF9zeW5jKGRldik7Cj4gPj4gIAl9Cj4gPj4gIAlzcGluX3VubG9j a19pcnFyZXN0b3JlKCZtdXNiLT5sb2NrLCBmbGFncyk7Cj4gPiAKPiA+IFRoYW5rcyBmb3IgdGhl IHBhdGNoLCBidXQgSSBnb3Qgc3BpbmxvY2sgZGVhZGxvY2sgd2hlbiB0ZXN0aW5nIGl0LiBJCj4g PiB0aGluayB0aGUgZnVuY3Rpb24gcGFpciBzaG91bGQgYmUgYXQgdGhlIG91dHNpZGUgc2NvcGUg b2YgdGhlCj4gPiBzcGluX2xvY2svdW5sb2NrLCBkb2Vzbid0IGl0Pwo+IAo+IEkgc2VlIC0gc29y cnkuIFdlaXJkLCBpdCB3b3JrZWQgZm9yIG1lIG9uIG15IE5va2lhIE45MDAuIFdoYXQgZGlkIHlv dQo+IHRlc3QgdGhpcyBvbj8KPiAKPiBJIHdpbGwgdHJ5IHRvIHN1Ym1pdCBhbiBpbXByb3ZlZCB2 ZXJzaW9uIHRvbmlnaHQgKHlvdSBzZWVtIHRvIGhhdmUgYQo+IGdvb2QgaWRlYSBvbiB3aGF0IGlz IHdyb25nLCBzbyBJIHdpbGwgZm9sbG93IHRoYXQpLCBidXQgaXQgd291bGQgaGVscCBtZQo+IGlm IEkgY2FuIHJlcHJvZHVjZSB0aGUgaXNzdWUuCgpJIHRlc3RlZCBvbiBib3RoIEJlYWdsZWJvbmUg QmxhY2sgYW5kIEFNMzM1eCBHUCBFVk0sIG9uIHRoZSBVU0IxIGhvc3QKcG9ydC4gSSBkaWRuJ3Qg dGVzdCB0aGUgVVNCMCBwb3J0ICh5ZXQpLgoKVGhhbmtzLAotQmluLgotLS0KVG8gdW5zdWJzY3Jp YmUgZnJvbSB0aGlzIGxpc3Q6IHNlbmQgdGhlIGxpbmUgInVuc3Vic2NyaWJlIGxpbnV4LXVzYiIg aW4KdGhlIGJvZHkgb2YgYSBtZXNzYWdlIHRvIG1ham9yZG9tb0B2Z2VyLmtlcm5lbC5vcmcKTW9y ZSBtYWpvcmRvbW8gaW5mbyBhdCAgaHR0cDovL3ZnZXIua2VybmVsLm9yZy9tYWpvcmRvbW8taW5m by5odG1sCg==