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: WARN_ON(irqs_disabled()) in dma_free_attrs? From: Christoph Hellwig Message-Id: <20180313131745.GC6260@lst.de> Date: Tue, 13 Mar 2018 14:17:45 +0100 To: Robin Murphy Cc: Fredrik Noring , Christoph Hellwig , Alan Stern , Marek Szyprowski , iommu@lists.linux-foundation.org, USB list , =?iso-8859-1?Q?J=FCrgen?= Urban List-ID: T24gVHVlLCBNYXIgMTMsIDIwMTggYXQgMTI6MTE6NDlQTSArMDAwMCwgUm9iaW4gTXVycGh5IHdy b3RlOgo+IFRha2luZyBhIHN0ZXAgYmFjaywgdGhvdWdoLCBwcm92aWRlZCB0aGUgb3JpZ2luYWwg cmF0aW9uYWxlIGFib3V0IAo+IGRtYV9kZWNsYXJlX2NvaGVyZW50X21lbW9yeSgpIGlzIHN0aWxs IHZhbGlkLCBJIHdvbmRlciBpZiB3ZSBzaG91bGQgc2ltcGx5IAo+IHBlcm1pdCB0aGUgVVNCIGNv ZGUgdG8gY2FsbCBkbWFfe2FsbG9jLGZyZWV9X2Zyb21fZGV2X2NvaGVyZW50KCkgZGlyZWN0bHkg Cj4gaGVyZSBpbnN0ZWFkIG9mIGJlaW5nICJnb29kIiBhbmQgaW5kaXJlY3RpbmcgdGhyb3VnaCB0 aGUgdG9wLWxldmVsIERNQSBBUEkgCj4gKHdoaWNoIGlzIHRoZSBwYXJ0IHdoaWNoIGxlYWRzIHRv IHByb2JsZW1zKS4gR2l2ZW4gdGhhdCBpdCdzIGEgc3BlY2lmaWMgRE1BIAo+IGJvdW5jZSBidWZm ZXIgaW1wbGVtZW50YXRpb24gd2l0aGluIGEgY29yZSBBUEksIG5vdCBqdXN0IGFueSBvbGQgZHJp dmVyIAo+IGNvZGUsIEkgcGVyc29uYWxseSB3b3VsZCBjb25zaWRlciB0aGF0IHJlYXNvbmFibGUu CgpMb29raW5nIGJhY2sgSSBkb24ndCByZWFsbHkgdW5kZXJzdGFuZCB3aHkgd2UgZXZlbiBpbmRp cmVjdCB0aGUgImNsYXNzaWMiCnBlci1kZXZpY2UgZG1hX2RlY2xhcmVfY29oZXJlbnRfbWVtb3J5 IHVzZSBjYXNlIHRocm91Z2ggdGhlIERNQSBBUEkuCgpJdCBzZWVtcyBsaWtlIGEgcHJldHR5IGRp ZmZlcmVudCB1c2UgY2FzZSB0byBtZS4gIEluIHRoZSBVU0IgY2FzZSB3ZQphbHNvIGhhdmUgdGhl IGZvbGxvd2luZyBhZGRpdGlvbmFsIHR3aXN0IGluIHRoYXQgaXQgZG9lc24ndCBldmVuIG5lZWQK dGhlIG1hcHBpbmcgdG8gYmUgY29oZXJlbnQuCgpTbyBtYXliZSBmb3Igbm93IHRoZSBxdWljayBm aXggaXMgdG8gbW92ZSB0aGUgc2xlZXAgY2hlY2sgYXMgc3VnZ2VzdGVkCmVhcmxpZXIgaW4gdGhp cyB0aHJlYWQsIGJ1dCBpbiB0aGUgbG9uZyBydW4gd2UgcHJvYmFibHkgbmVlZCB0byBkbyBzb21l Cm1ham9yIHJld29yayBvZiBob3cgZG1hX2RlY2xhcmVfY29oZXJlbnRfbWVtb3J5IGFuZCBmcmll bmRzIHdvcmsuCi0tLQpUbyB1bnN1YnNjcmliZSBmcm9tIHRoaXMgbGlzdDogc2VuZCB0aGUgbGlu ZSAidW5zdWJzY3JpYmUgbGludXgtdXNiIiBpbgp0aGUgYm9keSBvZiBhIG1lc3NhZ2UgdG8gbWFq b3Jkb21vQHZnZXIua2VybmVsLm9yZwpNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdl ci5rZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0bWwK