From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dhinakaran Pandiyan Subject: Re: [PATCH 2/5] drm/dp/mst: Validate REMOTE_I2C_READ harder Date: Fri, 07 Dec 2018 15:11:15 -0800 Message-ID: <20356829aee33ead5e824345819d43463e600a2f.camel@intel.com> References: <20180928180403.22499-1-ville.syrjala@linux.intel.com> <20180928180403.22499-2-ville.syrjala@linux.intel.com> Reply-To: dhinakaran.pandiyan@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180928180403.22499-2-ville.syrjala@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Ville Syrjala , dri-devel@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gRnJpLCAyMDE4LTA5LTI4IGF0IDIxOjA0ICswMzAwLCBWaWxsZSBTeXJqYWxhIHdyb3RlOgo+ IEZyb206IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+Cj4g Cj4gTWFrZSBzdXJlIGkyYyBtc2dzIHdlJ3JlIGFza2VkIHRvIHRyYW5zZmVyIGNvbmZvcm0gdG8g dGhlCj4gcmVxdWlyZW1lbnRzIG9mIFJFTU9URV9JMkNfUkVBRC4gV2Ugd2VyZSBvbmx5IGNoZWNr aW5nIHRoYXQgdGhlCj4gbGFzdCBtZXNzYWdlIGlzIGEgcmVhZCwgYnV0IHdlIG11c3QgYWxzbyBj aGVjayB0aGF0IHRoZSBwcmVjZWRpbmcKPiBtZXNzYWdlcyBhcmUgYWxsIHdyaXRlcy4gQWxzbyBj aGVjayB0aGF0IHRoZSBsZW5ndGggb2YgZWFjaAo+IG1lc3NhZ2UgaXNuJ3QgdG9vIGxvbmcuCgpS aWdodCwgdGhlIHN5bnRheCBmb3IgaTJjX3JlbW90ZV9yZWFkIGFsbG93cyBvbmx5IDggYml0cyBm b3IgbGVuZ3RoLgpSZXZpZXdlZC1ieTogRGhpbmFrYXJhbiBQYW5kaXlhbiA8ZGhpbmFrYXJhbi5w YW5kaXlhbkBpbnRlbC5jb20+CgoKPiAKPiBTaWduZWQtb2ZmLWJ5OiBWaWxsZSBTeXJqw6Rsw6Qg PHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgo+IC0tLQo+ICBkcml2ZXJzL2dwdS9kcm0v ZHJtX2RwX21zdF90b3BvbG9neS5jIHwgMjUgKysrKysrKysrKysrKysrKysrLS0tLS0tLQo+ICAx IGZpbGUgY2hhbmdlZCwgMTggaW5zZXJ0aW9ucygrKSwgNyBkZWxldGlvbnMoLSkKPiAKPiBkaWZm IC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2RybV9kcF9tc3RfdG9wb2xvZ3kuYwo+IGIvZHJpdmVy cy9ncHUvZHJtL2RybV9kcF9tc3RfdG9wb2xvZ3kuYwo+IGluZGV4IDNiNDAwZWFiMThhMi4uYTA2 NTJmYzE2NmM2IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9kcm1fZHBfbXN0X3RvcG9s b2d5LmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vZHJtX2RwX21zdF90b3BvbG9neS5jCj4gQEAg LTMyMzksNiArMzIzOSwyMyBAQCB2b2lkIGRybV9kcF9tc3RfdG9wb2xvZ3lfbWdyX2Rlc3Ryb3ko c3RydWN0Cj4gZHJtX2RwX21zdF90b3BvbG9neV9tZ3IgKm1ncikKPiAgfQo+ICBFWFBPUlRfU1lN Qk9MKGRybV9kcF9tc3RfdG9wb2xvZ3lfbWdyX2Rlc3Ryb3kpOwo+ICAKPiArc3RhdGljIGJvb2wg cmVtb3RlX2kyY19yZWFkX29rKGNvbnN0IHN0cnVjdCBpMmNfbXNnIG1zZ3NbXSwgaW50IG51bSkK PiArewo+ICsJaW50IGk7Cj4gKwo+ICsJaWYgKG51bSAtIDEgPiBEUF9SRU1PVEVfSTJDX1JFQURf TUFYX1RSQU5TQUNUSU9OUykKPiArCQlyZXR1cm4gZmFsc2U7Cj4gKwo+ICsJZm9yIChpID0gMDsg aSA8IG51bSAtIDE7IGkrKykgewo+ICsJCWlmIChtc2dzW2ldLmZsYWdzICYgSTJDX01fUkQgfHwK PiArCQkgICAgbXNnc1tpXS5sZW4gPiAweGZmKQo+ICsJCQlyZXR1cm4gZmFsc2U7Cj4gKwl9Cj4g Kwo+ICsJcmV0dXJuIG1zZ3NbbnVtIC0gMV0uZmxhZ3MgJiBJMkNfTV9SRCAmJgo+ICsJCW1zZ3Nb bnVtIC0gMV0ubGVuIDw9IDB4ZmY7Cj4gK30KPiArCj4gIC8qIEkyQyBkZXZpY2UgKi8KPiAgc3Rh dGljIGludCBkcm1fZHBfbXN0X2kyY194ZmVyKHN0cnVjdCBpMmNfYWRhcHRlciAqYWRhcHRlciwg c3RydWN0Cj4gaTJjX21zZyAqbXNncywKPiAgCQkJICAgICAgIGludCBudW0pCj4gQEAgLTMyNDgs NyArMzI2NSw2IEBAIHN0YXRpYyBpbnQgZHJtX2RwX21zdF9pMmNfeGZlcihzdHJ1Y3QKPiBpMmNf YWRhcHRlciAqYWRhcHRlciwgc3RydWN0IGkyY19tc2cgKm1zZ3MKPiAgCXN0cnVjdCBkcm1fZHBf bXN0X2JyYW5jaCAqbXN0YjsKPiAgCXN0cnVjdCBkcm1fZHBfbXN0X3RvcG9sb2d5X21nciAqbWdy ID0gcG9ydC0+bWdyOwo+ICAJdW5zaWduZWQgaW50IGk7Cj4gLQlib29sIHJlYWRpbmcgPSBmYWxz ZTsKPiAgCXN0cnVjdCBkcm1fZHBfc2lkZWJhbmRfbXNnX3JlcV9ib2R5IG1zZzsKPiAgCXN0cnVj dCBkcm1fZHBfc2lkZWJhbmRfbXNnX3R4ICp0eG1zZyA9IE5VTEw7Cj4gIAlpbnQgcmV0Owo+IEBA IC0zMjU3LDEyICszMjczLDcgQEAgc3RhdGljIGludCBkcm1fZHBfbXN0X2kyY194ZmVyKHN0cnVj dAo+IGkyY19hZGFwdGVyICphZGFwdGVyLCBzdHJ1Y3QgaTJjX21zZyAqbXNncwo+ICAJaWYgKCFt c3RiKQo+ICAJCXJldHVybiAtRVJFTU9URUlPOwo+ICAKPiAtCS8qIGNvbnN0cnVjdCBpMmMgbXNn ICovCj4gLQkvKiBzZWUgaWYgbGFzdCBtc2cgaXMgYSByZWFkICovCj4gLQlpZiAobXNnc1tudW0g LSAxXS5mbGFncyAmIEkyQ19NX1JEKQo+IC0JCXJlYWRpbmcgPSB0cnVlOwo+IC0KPiAtCWlmICgh cmVhZGluZyB8fCAobnVtIC0gMSA+Cj4gRFBfUkVNT1RFX0kyQ19SRUFEX01BWF9UUkFOU0FDVElP TlMpKSB7Cj4gKwlpZiAoIXJlbW90ZV9pMmNfcmVhZF9vayhtc2dzLCBudW0pKSB7Cj4gIAkJRFJN X0RFQlVHX0tNUygiVW5zdXBwb3J0ZWQgSTJDIHRyYW5zYWN0aW9uIGZvciBNU1QKPiBkZXZpY2Vc biIpOwo+ICAJCXJldCA9IC1FSU87Cj4gIAkJZ290byBvdXQ7CgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVs LWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcv bWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK