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: dma: ste_dma40: Remove VLA usage From: Kees Cook Message-Id: <20180629185107.GA37488@beast> Date: Fri, 29 Jun 2018 11:51:07 -0700 To: Linus Walleij Cc: Dan Williams , Vinod Koul , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: SW4gdGhlIHF1ZXN0IHRvIHJlbW92ZSBhbGwgc3RhY2sgVkxBIHVzYWdlIGZyb20gdGhlIGtlcm5l bFsxXSwgdGhpcwpzd2l0Y2hlcyB0byB1c2luZyBhIHByZS1hbGxvY2F0ZWQgc2NyYXRjaCByZWdp c3RlciBzcGFjZSwgc2V0IHVwIHdpdGgKYWxsIG90aGVyIG90aGVyIGFsbG9jYXRpb25zLgoKWzFd IGh0dHBzOi8vbGttbC5rZXJuZWwub3JnL3IvQ0ErNTVhRnpDRy16Tm1ad1g0QTJGUXBhZGFmTGZF eks2Q0M9cVBYeWRBYWNVMVJxWldBQG1haWwuZ21haWwuY29tCgpDYzogTGludXMgV2FsbGVpaiA8 bGludXMud2FsbGVpakBsaW5hcm8ub3JnPgpDYzogRGFuIFdpbGxpYW1zIDxkYW4uai53aWxsaWFt c0BpbnRlbC5jb20+CkNjOiBWaW5vZCBLb3VsIDx2a291bEBrZXJuZWwub3JnPgpDYzogbGludXgt YXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCkNjOiBkbWFlbmdpbmVAdmdlci5rZXJuZWwu b3JnClNpZ25lZC1vZmYtYnk6IEtlZXMgQ29vayA8a2Vlc2Nvb2tAY2hyb21pdW0ub3JnPgotLS0K IGRyaXZlcnMvZG1hL3N0ZV9kbWE0MC5jIHwgMTUgKysrKysrKysrKysrKy0tCiAxIGZpbGUgY2hh bmdlZCwgMTMgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9kcml2 ZXJzL2RtYS9zdGVfZG1hNDAuYyBiL2RyaXZlcnMvZG1hL3N0ZV9kbWE0MC5jCmluZGV4IDFiYzE0 OWFmOTkwZS4uZjRlZGZjNTZmMzRlIDEwMDY0NAotLS0gYS9kcml2ZXJzL2RtYS9zdGVfZG1hNDAu YworKysgYi9kcml2ZXJzL2RtYS9zdGVfZG1hNDAuYwpAQCAtNTU1LDYgKzU1NSw3IEBAIHN0cnVj dCBkNDBfZ2VuX2RtYWMgewogICogQHJlZ192YWxfYmFja3VwX3Y0OiBCYWNrdXAgb2YgcmVnaXN0 ZXJzIHRoYXQgb25seSBleGl0cyBvbiBkbWE0MCB2MyBhbmQKICAqIGxhdGVyCiAgKiBAcmVnX3Zh bF9iYWNrdXBfY2hhbjogQmFja3VwIGRhdGEgZm9yIHN0YW5kYXJkIGNoYW5uZWwgcGFyYW1ldGVy IHJlZ2lzdGVycy4KKyAqIEByZWdzX2ludGVycnVwdDogU2NyYXRjaCBzcGFjZSBmb3IgcmVnaXN0 ZXJzIGR1cmluZyBpbnRlcnJ1cHQuCiAgKiBAZ2NjX3B3cl9vZmZfbWFzazogTWFzayB0byBtYWlu dGFpbiB0aGUgY2hhbm5lbHMgdGhhdCBjYW4gYmUgdHVybmVkIG9mZi4KICAqIEBnZW5fZG1hYzog dGhlIHN0cnVjdCBmb3IgZ2VuZXJpYyByZWdpc3RlcnMgdmFsdWVzIHRvIHJlcHJlc2VudCB1ODUw MC84NTQwCiAgKiBETUEgY29udHJvbGxlcgpAQCAtNTkyLDYgKzU5Myw3IEBAIHN0cnVjdCBkNDBf YmFzZSB7CiAJdTMyCQkJCSAgcmVnX3ZhbF9iYWNrdXBbQkFDS1VQX1JFR1NfU1pdOwogCXUzMgkJ CQkgIHJlZ192YWxfYmFja3VwX3Y0W0JBQ0tVUF9SRUdTX1NaX01BWF07CiAJdTMyCQkJCSAqcmVn X3ZhbF9iYWNrdXBfY2hhbjsKKwl1MzIJCQkJICpyZWdzX2ludGVycnVwdDsKIAl1MTYJCQkJICBn Y2NfcHdyX29mZl9tYXNrOwogCXN0cnVjdCBkNDBfZ2VuX2RtYWMJCSAgZ2VuX2RtYWM7CiB9OwpA QCAtMTYzNyw3ICsxNjM5LDcgQEAgc3RhdGljIGlycXJldHVybl90IGQ0MF9oYW5kbGVfaW50ZXJy dXB0KGludCBpcnEsIHZvaWQgKmRhdGEpCiAJc3RydWN0IGQ0MF9jaGFuICpkNDBjOwogCXVuc2ln bmVkIGxvbmcgZmxhZ3M7CiAJc3RydWN0IGQ0MF9iYXNlICpiYXNlID0gZGF0YTsKLQl1MzIgcmVn c1tiYXNlLT5nZW5fZG1hYy5pbF9zaXplXTsKKwl1MzIgKnJlZ3MgPSBiYXNlLT5yZWdzX2ludGVy cnVwdDsKIAlzdHJ1Y3QgZDQwX2ludGVycnVwdF9sb29rdXAgKmlsID0gYmFzZS0+Z2VuX2RtYWMu aWw7CiAJdTMyIGlsX3NpemUgPSBiYXNlLT5nZW5fZG1hYy5pbF9zaXplOwogCkBAIC0zMjU4LDEz ICszMjYwLDIyIEBAIHN0YXRpYyBzdHJ1Y3QgZDQwX2Jhc2UgKiBfX2luaXQgZDQwX2h3X2RldGVj dF9pbml0KHN0cnVjdCBwbGF0Zm9ybV9kZXZpY2UgKnBkZXYpCiAJaWYgKCFiYXNlLT5sY2xhX3Bv b2wuYWxsb2NfbWFwKQogCQlnb3RvIGZyZWVfYmFja3VwX2NoYW47CiAKKwliYXNlLT5yZWdzX2lu dGVycnVwdCA9IGttYWxsb2NfYXJyYXkoYmFzZS0+Z2VuX2RtYWMuaWxfc2l6ZSwKKwkJCQkJICAg ICBzaXplb2YoKmJhc2UtPnJlZ3NfaW50ZXJydXB0KSwKKwkJCQkJICAgICBHRlBfS0VSTkVMKTsK KwlpZiAoIWJhc2UtPnJlZ3NfaW50ZXJydXB0KQorCQlnb3RvIGZyZWVfbWFwOworCiAJYmFzZS0+ ZGVzY19zbGFiID0ga21lbV9jYWNoZV9jcmVhdGUoRDQwX05BTUUsIHNpemVvZihzdHJ1Y3QgZDQw X2Rlc2MpLAogCQkJCQkgICAgMCwgU0xBQl9IV0NBQ0hFX0FMSUdOLAogCQkJCQkgICAgTlVMTCk7 CiAJaWYgKGJhc2UtPmRlc2Nfc2xhYiA9PSBOVUxMKQotCQlnb3RvIGZyZWVfbWFwOworCQlnb3Rv IGZyZWVfcmVnczsKKwogCiAJcmV0dXJuIGJhc2U7CisgZnJlZV9yZWdzOgorCWtmcmVlKGJhc2Ut PnJlZ3NfaW50ZXJydXB0KTsKICBmcmVlX21hcDoKIAlrZnJlZShiYXNlLT5sY2xhX3Bvb2wuYWxs b2NfbWFwKTsKICBmcmVlX2JhY2t1cF9jaGFuOgo=