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: xhci: Support running urb giveback in tasklet context From: Suwan Kim Message-Id: <20190301090850.GA2797@localhost.localdomain> Date: Fri, 1 Mar 2019 18:08:51 +0900 To: Mathias Nyman Cc: linux-usb@vger.kernel.org List-ID: SGkgTWF0aGlhcywKCk9uIFRodSwgRmViIDI4LCAyMDE5IGF0IDExOjE4OjU4QU0gKzAyMDAsIE1h dGhpYXMgTnltYW4gd3JvdGU6Cj4gSGkKPiAKPiBPbiAxOS4yLjIwMTkgMTcuNDEsIFN1d2FuIEtp bSB3cm90ZToKPiA+IFBhdGNoICJVU0I6IEhDRDogc3VwcG9ydCBnaXZlYmFjayBvZiBVUkIgaW4g dGFza2xldCBjb250ZXh0Igo+ID4gaW50cm9kdWNlZCBnaXZlYmFjayBvZiB1cmIgaW4gdGFza2xl dCBjb250ZXh0LiBbMV0gVGhpcyBwYXRjaCB3YXMKPiA+IGFwcGxpZWQgdG8gZWhjaSBidXQgbm90 IHhoY2kuIFsyXSBJdCBzaWduaWZpY2FudGx5IHJlZHVjZXMgdGhlIGhhcmQKPiA+IGlycSB0aW1l IG9mIHhoY2kuIEVzcGVjaWFsbHkgZm9yIHRoZSB1dmMgZHJpdmVyLCB0aGUgaGFyZCBpcnEgaW5j bHVkaW5nCj4gPiB0aGUgdXZjIGNvbXBsZXRlIGZ1bmN0aW9uIHJ1bnMgcXVpdGUgbG9uZyAoYWJv dXQgMzAwLTM1MHVzIGluIG15Cj4gPiBUaGlua3BhZCBzNDQwIGxhcHRvcCB3aXRoIHdlYmNhbSkg YnV0IGFwcGx5aW5nIHRoaXMgcGF0Y2ggcmVkdWNlcwo+ID4gdGhlIGhhcmQgaXJxIHRpbWUgb2Yg eGhjaSB0byBhYm91dCAxOC0zMHVzLgo+IAo+IFNvcnJ5IGFib3V0IHRoZSBsYXRlIHJlcGx5Lgo+ IENhbiB5b3UgcmVjYWxsIGFueSByZWFzb24gd2h5IHRoaXMgd2Fzbid0IGFwcGxpZWQgdG8geGhj aSBiYWNrIHRoZW4/CgpNaW5nIExlaSB3aG8gaXMgdGhlIGF1dGhvciBvZiB0aGUgZ2l2ZWJhY2st dGFza2xldCBwYXRjaCBpbiB1c2IgY29yZQp3b3JrZWQgd2l0aCBBbGFuIHN0ZXJuIHdoZW4gaGUg d2FzIHdvcmtpbmcgb24gdGhlIHBhdGNoLCBhbmQgaGUgb25seQpyZXBsYWNlZCBnaXZlYmFjayBv ZiBlaGNpLiBJIGRvbid0IGtub3cgd2h5IGhlIGRpZG4ndCByZXBsYWNlIHhoY2kuCkFmdGVyIHNv bWUgdGltZSwgc29tZWJvZHkgYXNrZWQgaGltIHdoeSB0aGlzIHBhdGNoIGRpZCBub3QgYXBwbHkg dG8KeGhjaS4gQW5kIHRoZXJlIHdhcyBubyBhcHBhcmVudCByZWFzb24uWzFdIElNTywgbm8gb25l IHNlZW1zCmludGVyZXN0ZWQgaW4geGhjaS4uLgoKPiB4aGNpIGlzIGRvaW5nIGEgbG90IGluIGhh cmQgaW50ZXJydXB0IGNvbnRleHQsIGFuZCByZWR1Y2luZyB0aGF0IHdvdWxkCj4gYmUgYSBnb29k IGlkZWEuIEFub3RoZXIgb3B0aW9uIHRvIGxvb2sgYXQgaXMgdXNpbmcgdGhyZWFkZWQgaW50ZXJy dXB0cwo+IGZvciB4aGNpLgoKV2hlbiB0aGUgZ2l2ZWJhY2stdGFza2xldCBwYXRjaCB3YXMgd29y a2luZywgdGhlIGF1dGhvciBleHBlcmltZW50ZWQKd2l0aCBjb21wYXJpbmcgdGhyZWFkZWQgaW50 ZXJydXB0IGFuZCB0YXNrbGV0LiBBdCB0aGF0IHRpbWUsIHRhc2tsZXQKc2hvd2VkIGJldHRlciBw ZXJmb3JtYW5jZSB0aGFuIHRocmVhZGVkIGludGVycnVwdC5bMl0KCj4gV2UgbWlnaHQgaG93ZXZl ciBiZSBvcGVuaW5nIGEgY2FuIG9mIHdvcm1zIHdpdGggdGhpcywgdGhlIGltcGFjdCBpcyB1bmtu b3duLgo+IAo+IEhvdyBtdWNoIHRlc3Rpbmcgd2FzIGRvbmUgd2l0aCBVUkIgcmV0dXJuIGluIHRh c2tsZXQgZm9yIFNTIGRldmljZXM/Cj4gCj4gV291bGQgYmUgbmljZSB0byB0ZXN0IHRoaXMgb3V0 IG9uIGEgYml0IHdpZGVyIGF1ZGllbmNlIGJlZm9yZSBhcHBseWluZyBpdC4KClVuZm9ydHVuYXRl bHksIFNTIGRldmljZXMgSSBoYXZlIGFyZSBvbmx5IHVzYiBtYXNzIHN0b3JhZ2UgZGV2aWNlcy4K V2hlbiBJIHRlc3RlZCB3aXRoIGEgVVNCIG1hc3Mgc3RvcmFnZSBkZXZpY2UsIGJvdGggeGhjaSB3 aXRoIHRhc2tsZXQKYW5kIHdpdGhvdXQgdGFza2xldCh1cmIgY29tcGxldGUgaW4gaGFyZCBJUlEp IHNob3dlZCBzaW1pbGFyIHBlcmZvcm1hbmNlLgoKW1VTQi1tYXNzIHN0b3JhZ2UgVEVTVF0KCiAt IFRlc3RiZWQgaXMgaTUtNzYwMCBhbmQgdHdvIG1hc3Mgc3RvcmFnZSBkZXZpY2VzICh1c2IgZmxh c2ggbWVtb3J5LAogICBleHRlcm5hbCBoYXJkIGRyaXZlKSBhcmUgdXNlZC4KICAgVGVzdCBpcyBl eGVjdXRlZCAxMCB0aW1lcyBhbmQgZmlndXJlIG91dCB0aGUgYXZlcmFnZSBzcGVlZAoKIC0gZGQg aWY9L2Rldi9zZE4gb2Y9L2Rldi9udWxsIGlmbGFnPWRpcmVjdCBicz0xRyBjb3VudD0xCiAtIGRl dmljZTEgOiBTYW5kaXNrIFVsdHJhIEZsYWlyIFVTQiAzLjAgMzJHQgogLSBkZXZpY2UyIDogV0Qg TXkgUGFzc3BvcnQgMlRCIChleHRlcm5hbCBoYXJkIGRyaXZlKQoKIC0geGhjaSB3aXRob3V0IHRh c2tsZXQKCS0gZGV2aWNlMSAtIDEyOS43MjdNQi9zCgktIGRldmljZTIgLSAxMDMuNjY3TUIvcwoK IC0geGhjaSB3aXRoIHRhc2tsZXQKCS0gZGV2aWNlMSAtIDEwMy4yTUIvcwoJLSBkZXZpY2UyIC0g MTAzLjY5Mk1CL3MKCkkgaGF2ZSBvbmx5IG9uZSBoaWdoLXNwZWVkIGlzb2Nocm9ub3VzIHR5cGUg ZGV2aWNlIHRoYXQgaXMgYnVpbHQtaW4Kd2ViY2FtIGluIG15IGxhcHRvcCAoVGhpbmtwYWQgczQ0 MCwgaTUtNDIxMFUpIEluIHRoaXMgY2FzZSwgaXQgaXMKZGlmZmljdWx0IHRvIG1lYXN1cmUgdGhl IHBlcmZvcm1hbmNlLiBTbyBpIGNoZWNrZWQgdGhlIG92ZXJydW4vdW5kZXJydW4KZXZlbnQgaW4g eGhjaS4gVW50aWwgbm93LCBubyBvdmVycnVuL3VuZGVycnVuIGV2ZW50IGhhcyBvY2N1cnJlZApp biBhY3R1YWwgdXNlLgoKUmVnYXJkcwoKU3V3YW4gS2ltCg==