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: [v2] USB: host: Use zeroing memory allocator rather than allocator/memset From: Mathias Nyman Message-Id: <82141791-ec06-e513-d35a-8de789bb804e@linux.intel.com> Date: Tue, 2 Jan 2018 12:13:51 +0200 To: Himanshu Jha , gregkh@linuxfoundation.org Cc: stern@rowland.harvard.edu, mathias.nyman@intel.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, mcgrof@kernel.org List-ID: T24gMzAuMTIuMjAxNyAyMjowMywgSGltYW5zaHUgSmhhIHdyb3RlOgo+IFVzZSBkbWFfemFsbG9j X2NvaGVyZW50IGZvciBhbGxvY2F0aW5nIHplcm9lZAo+IG1lbW9yeSBhbmQgcmVtb3ZlIHVubmVj ZXNzYXJ5IG1lbXNldCBmdW5jdGlvbi4KPiAKPiBEb25lIHVzaW5nIENvY2NpbmVsbGUuCj4gR2Vu ZXJhdGVkLWJ5OiBzY3JpcHRzL2NvY2NpbmVsbGUvYXBpL2FsbG9jL2t6YWxsb2Mtc2ltcGxlLmNv Y2NpCj4gMC1kYXkgdGVzdGVkIHdpdGggbm8gZmFpbHVyZXMuCj4gCj4gU3VnZ2VzdGVkLWJ5OiBM dWlzIFIuIFJvZHJpZ3VleiA8bWNncm9mQGtlcm5lbC5vcmc+Cj4gU2lnbmVkLW9mZi1ieTogSGlt YW5zaHUgSmhhIDxoaW1hbnNodWpoYTE5OTY0MEBnbWFpbC5jb20+Cj4gLS0tCj4gdjI6Cj4gICAg IC1hbGlnbiBhcmd1bWVuc3QgYXMgdGhleSB3ZXJlIGJlZm9yZSBhcHBseWluZyB0aGUgU21QTCBy dWxlLgo+IAo+ICAgZHJpdmVycy91c2IvaG9zdC91aGNpLWhjZC5jIHwgNyArKystLS0tCj4gICBk cml2ZXJzL3VzYi9ob3N0L3hoY2ktbWVtLmMgfCA3ICsrLS0tLS0KPiAgIDIgZmlsZXMgY2hhbmdl ZCwgNSBpbnNlcnRpb25zKCspLCA5IGRlbGV0aW9ucygtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2 ZXJzL3VzYi9ob3N0L3VoY2ktaGNkLmMgYi9kcml2ZXJzL3VzYi9ob3N0L3VoY2ktaGNkLmMKPiBp bmRleCBmNWM5MDIxLi5hYzUzMzk4IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvdXNiL2hvc3QvdWhj aS1oY2QuYwo+ICsrKyBiL2RyaXZlcnMvdXNiL2hvc3QvdWhjaS1oY2QuYwo+IEBAIC02MDAsMTUg KzYwMCwxNCBAQCBzdGF0aWMgaW50IHVoY2lfc3RhcnQoc3RydWN0IHVzYl9oY2QgKmhjZCkKPiAg IAl1aGNpLT5kZW50cnkgPSBkZW50cnk7Cj4gICAjZW5kaWYKPiAgIAo+IC0JdWhjaS0+ZnJhbWUg PSBkbWFfYWxsb2NfY29oZXJlbnQodWhjaV9kZXYodWhjaSksCj4gLQkJCVVIQ0lfTlVNRlJBTUVT ICogc2l6ZW9mKCp1aGNpLT5mcmFtZSksCj4gLQkJCSZ1aGNpLT5mcmFtZV9kbWFfaGFuZGxlLCBH RlBfS0VSTkVMKTsKPiArCXVoY2ktPmZyYW1lID0gZG1hX3phbGxvY19jb2hlcmVudCh1aGNpX2Rl dih1aGNpKSwKPiArCQkJVUhDSV9OVU1GUkFNRVMgKiBzaXplb2YoKnVoY2ktPmZyYW1lKSwKPiAr CQkJJnVoY2ktPmZyYW1lX2RtYV9oYW5kbGUsIEdGUF9LRVJORUwpOwo+ICAgCWlmICghdWhjaS0+ ZnJhbWUpIHsKPiAgIAkJZGV2X2Vycih1aGNpX2Rldih1aGNpKSwKPiAgIAkJCSJ1bmFibGUgdG8g YWxsb2NhdGUgY29uc2lzdGVudCBtZW1vcnkgZm9yIGZyYW1lIGxpc3RcbiIpOwo+ICAgCQlnb3Rv IGVycl9hbGxvY19mcmFtZTsKPiAgIAl9Cj4gLQltZW1zZXQodWhjaS0+ZnJhbWUsIDAsIFVIQ0lf TlVNRlJBTUVTICogc2l6ZW9mKCp1aGNpLT5mcmFtZSkpOwo+ICAgCj4gICAJdWhjaS0+ZnJhbWVf Y3B1ID0ga2NhbGxvYyhVSENJX05VTUZSQU1FUywgc2l6ZW9mKCp1aGNpLT5mcmFtZV9jcHUpLAo+ ICAgCQkJR0ZQX0tFUk5FTCk7Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNiL2hvc3QveGhjaS1t ZW0uYyBiL2RyaXZlcnMvdXNiL2hvc3QveGhjaS1tZW0uYwo+IGluZGV4IDU1NGE4YTUuLjMzMjQy MGQgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy91c2IvaG9zdC94aGNpLW1lbS5jCj4gKysrIGIvZHJp dmVycy91c2IvaG9zdC94aGNpLW1lbS5jCj4gQEAgLTE3ODIsMTQgKzE3ODIsMTEgQEAgaW50IHho Y2lfYWxsb2NfZXJzdChzdHJ1Y3QgeGhjaV9oY2QgKnhoY2ksCj4gICAJc3RydWN0IHhoY2lfZXJz dF9lbnRyeSAqZW50cnk7Cj4gICAKPiAgIAlzaXplID0gc2l6ZW9mKHN0cnVjdCB4aGNpX2Vyc3Rf ZW50cnkpICogZXZ0X3JpbmctPm51bV9zZWdzOwo+IC0JZXJzdC0+ZW50cmllcyA9IGRtYV9hbGxv Y19jb2hlcmVudCh4aGNpX3RvX2hjZCh4aGNpKS0+c2VsZi5zeXNkZXYsCj4gLQkJCQkJICAgc2l6 ZSwKPiAtCQkJCQkgICAmZXJzdC0+ZXJzdF9kbWFfYWRkciwKPiAtCQkJCQkgICBmbGFncyk7Cj4g KwllcnN0LT5lbnRyaWVzID0gZG1hX3phbGxvY19jb2hlcmVudCh4aGNpX3RvX2hjZCh4aGNpKS0+ c2VsZi5zeXNkZXYsCj4gKwkJCQkJICAgIHNpemUsICZlcnN0LT5lcnN0X2RtYV9hZGRyLCBmbGFn cyk7Cj4gICAJaWYgKCFlcnN0LT5lbnRyaWVzKQo+ICAgCQlyZXR1cm4gLUVOT01FTTsKPiAgIAo+ IC0JbWVtc2V0KGVyc3QtPmVudHJpZXMsIDAsIHNpemUpOwo+ICAgCWVyc3QtPm51bV9lbnRyaWVz ID0gZXZ0X3JpbmctPm51bV9zZWdzOwo+ICAgCj4gICAJc2VnID0gZXZ0X3JpbmctPmZpcnN0X3Nl ZzsKCkZvciB0aGUgeGhjaSBwYXJ0OgpBY2tlZC1ieTogTWF0aGlhcyBOeW1hbiA8bWF0aGlhcy5u eW1hbkBsaW51eC5pbnRlbC5jb20+Ci0tLQpUbyB1bnN1YnNjcmliZSBmcm9tIHRoaXMgbGlzdDog c2VuZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgbGludXgtdXNiIiBpbgp0aGUgYm9keSBvZiBhIG1l c3NhZ2UgdG8gbWFqb3Jkb21vQHZnZXIua2VybmVsLm9yZwpNb3JlIG1ham9yZG9tbyBpbmZvIGF0 ICBodHRwOi8vdmdlci5rZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0bWwK