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[89.212.118.115]) by smtp.gmail.com with ESMTPSA id fe11-20020a056402390b00b00461b169c02csm1555318edb.91.2022.11.05.12.48.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Nov 2022 12:48:36 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: Chen-Yu Tsai , Samuel Holland Cc: Ivaylo Dimitrov , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, Samuel Holland Subject: Re: [PATCH 2/2] bus: sunxi-rsb: Support atomic transfers Date: Sat, 05 Nov 2022 20:48:35 +0100 Message-ID: <4752203.GXAFRqVoOG@jernej-laptop> In-Reply-To: <4779430.31r3eYUQgx@jernej-laptop> References: <20221105191954.14360-1-samuel@sholland.org> <20221105191954.14360-3-samuel@sholland.org> <4779430.31r3eYUQgx@jernej-laptop> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221105_124839_420311_36F5FF43 X-CRM114-Status: GOOD ( 22.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org RG5lIHNvYm90YSwgMDUuIG5vdmVtYmVyIDIwMjIgb2IgMjA6NDY6NDcgQ0VUIGplIEplcm5laiDF oGtyYWJlYyBuYXBpc2FsKGEpOgo+IERuZSBzb2JvdGEsIDA1LiBub3ZlbWJlciAyMDIyIG9iIDIw OjE5OjUzIENFVCBqZSBTYW11ZWwgSG9sbGFuZCBuYXBpc2FsKGEpOgo+ID4gV2hlbiBjb21tdW5p Y2F0aW5nIHdpdGggYSBQTUlDIGR1cmluZyBzeXN0ZW0gcG93ZXJvZmYgKHBtX3Bvd2VyX29mZigp KSwKPiA+IElSUXMgYXJlIGRpc2FibGVkIGFuZCB3ZSBhcmUgaW4gYSBSQ1UgcmVhZC1zaWRlIGNy aXRpY2FsIHNlY3Rpb24sIHNvIHdlCj4gPiBjYW5ub3QgdXNlIHdhaXRfZm9yX2NvbXBsZXRpb25f aW9fdGltZW91dCgpLiBJbnN0ZWFkLCBwb2xsIHRoZSBzdGF0dXMKPiA+IHJlZ2lzdGVyIGZvciB0 cmFuc2ZlciBjb21wbGV0aW9uLgo+ID4gCj4gPiBTaWduZWQtb2ZmLWJ5OiBTYW11ZWwgSG9sbGFu ZCA8c2FtdWVsQHNob2xsYW5kLm9yZz4KCkFsc28gYSBmaXhlcyB0YWcgd291bGQgYmUgaW4gb3Jk ZXIgaGVyZS4KCkJlc3QgcmVnYXJkcywKSmVybmVqCgo+ID4gLS0tCj4gPiAKPiA+ICBkcml2ZXJz L2J1cy9zdW54aS1yc2IuYyB8IDIzICsrKysrKysrKysrKysrKysrLS0tLS0tCj4gPiAgMSBmaWxl IGNoYW5nZWQsIDE3IGluc2VydGlvbnMoKyksIDYgZGVsZXRpb25zKC0pCj4gPiAKPiA+IGRpZmYg LS1naXQgYS9kcml2ZXJzL2J1cy9zdW54aS1yc2IuYyBiL2RyaXZlcnMvYnVzL3N1bnhpLXJzYi5j Cj4gPiBpbmRleCAxNzM0M2NkNzUzMzguLjBmMGU0OThkNDM3OSAxMDA2NDQKPiA+IC0tLSBhL2Ry aXZlcnMvYnVzL3N1bnhpLXJzYi5jCj4gPiArKysgYi9kcml2ZXJzL2J1cy9zdW54aS1yc2IuYwo+ ID4gQEAgLTI2Nyw2ICsyNjcsOSBAQCBFWFBPUlRfU1lNQk9MX0dQTChzdW54aV9yc2JfZHJpdmVy X3JlZ2lzdGVyKTsKPiA+IAo+ID4gIC8qIGNvbW1vbiBjb2RlIHRoYXQgc3RhcnRzIGEgdHJhbnNm ZXIgKi8KPiA+ICBzdGF0aWMgaW50IF9zdW54aV9yc2JfcnVuX3hmZXIoc3RydWN0IHN1bnhpX3Jz YiAqcnNiKQo+ID4gIHsKPiA+IAo+ID4gKwlib29sIHRpbWVvdXQ7Cj4gPiArCXUzMiBzdGF0dXM7 Cj4gPiArCj4gPiAKPiA+ICAJaWYgKHJlYWRsKHJzYi0+cmVncyArIFJTQl9DVFJMKSAmIFJTQl9D VFJMX1NUQVJUX1RSQU5TKSB7Cj4gPiAgCQo+ID4gIAkJZGV2X2RiZyhyc2ItPmRldiwgIlJTQiB0 cmFuc2ZlciBzdGlsbCBpbiBwcm9ncmVzc1xuIik7Cj4gPiAgCQlyZXR1cm4gLUVCVVNZOwo+ID4g Cj4gPiBAQCAtMjc5LDggKzI4MiwxNiBAQCBzdGF0aWMgaW50IF9zdW54aV9yc2JfcnVuX3hmZXIo c3RydWN0IHN1bnhpX3JzYiAqcnNiKQo+ID4gCj4gPiAgCXdyaXRlbChSU0JfQ1RSTF9TVEFSVF9U UkFOUyB8IFJTQl9DVFJMX0dMT0JBTF9JTlRfRU5CLAo+ID4gIAkKPiA+ICAJICAgICAgIHJzYi0+ cmVncyArIFJTQl9DVFJMKTsKPiA+IAo+ID4gLQlpZiAoIXdhaXRfZm9yX2NvbXBsZXRpb25faW9f dGltZW91dCgmcnNiLT5jb21wbGV0ZSwKPiA+IC0KPiAKPiBtc2Vjc190b19qaWZmaWVzKDEwMCkp KSB7Cj4gCj4gPiArCWlmIChpcnFzX2Rpc2FibGVkKCkpIHsKPiA+ICsJCXRpbWVvdXQgPSByZWFk bF9wb2xsX3RpbWVvdXRfYXRvbWljKHJzYi0+cmVncyArCj4gCj4gUlNCX0lOVFMsCj4gCj4gPiAr CQkJCQkJICAgIHN0YXR1cywKPiAKPiBzdGF0dXMsIDEwLCAxMDAwMDApOwo+IAo+IEl0IHdvdWxk IGJlIGdvb2QgdG8gY2hlY2sgb25seSBmb3IgUlNCX0lOVFNfTE9BRF9CU1ksIFJTQl9JTlRTX1RS QU5TX0VSUiBhbmQKPiBSU0JfSU5UU19UUkFOU19PVkVSIGZsYWdzIGFuZCBjbGVhciB0aGVtIGFm dGVyd2FyZHMuIFRoYXQgd2F5IHdlIGF2b2lkCj4gcHJvYmxlbXMgaWYgdGhpcyBwYXRoIGlzIHVz ZWQgb3V0c2lkZSBwb3dlciBvZmYgY2FzZS4KPiAKPiBCZXN0IHJlZ2FyZHMsCj4gSmVybmVqCj4g Cj4gPiArCX0gZWxzZSB7Cj4gPiArCQl0aW1lb3V0ID0gIXdhaXRfZm9yX2NvbXBsZXRpb25faW9f dGltZW91dCgmcnNiLQo+ID4KPiA+Y29tcGxldGUsCj4gPgo+ID4gKwo+IAo+IG1zZWNzX3RvX2pp ZmZpZXMoMTAwKSk7Cj4gCj4gPiArCQlzdGF0dXMgPSByc2ItPnN0YXR1czsKPiA+ICsJfQo+ID4g Kwo+ID4gKwlpZiAodGltZW91dCkgewo+ID4gCj4gPiAgCQlkZXZfZGJnKHJzYi0+ZGV2LCAiUlNC IHRpbWVvdXRcbiIpOwo+ID4gIAkJCj4gPiAgCQkvKiBhYm9ydCB0aGUgdHJhbnNmZXIgKi8KPiA+ IAo+ID4gQEAgLTI5MiwxOCArMzAzLDE4IEBAIHN0YXRpYyBpbnQgX3N1bnhpX3JzYl9ydW5feGZl cihzdHJ1Y3Qgc3VueGlfcnNiCj4gPiAqcnNiKQo+ID4gCj4gPiAgCQlyZXR1cm4gLUVUSU1FRE9V VDsKPiA+ICAJCj4gPiAgCX0KPiA+IAo+ID4gLQlpZiAocnNiLT5zdGF0dXMgJiBSU0JfSU5UU19M T0FEX0JTWSkgewo+ID4gKwlpZiAoc3RhdHVzICYgUlNCX0lOVFNfTE9BRF9CU1kpIHsKPiA+IAo+ ID4gIAkJZGV2X2RiZyhyc2ItPmRldiwgIlJTQiBidXN5XG4iKTsKPiA+ICAJCXJldHVybiAtRUJV U1k7Cj4gPiAgCQo+ID4gIAl9Cj4gPiAKPiA+IC0JaWYgKHJzYi0+c3RhdHVzICYgUlNCX0lOVFNf VFJBTlNfRVJSKSB7Cj4gPiAtCQlpZiAocnNiLT5zdGF0dXMgJiBSU0JfSU5UU19UUkFOU19FUlJf QUNLKSB7Cj4gPiArCWlmIChzdGF0dXMgJiBSU0JfSU5UU19UUkFOU19FUlIpIHsKPiA+ICsJCWlm IChzdGF0dXMgJiBSU0JfSU5UU19UUkFOU19FUlJfQUNLKSB7Cj4gPiAKPiA+ICAJCQlkZXZfZGJn KHJzYi0+ZGV2LCAiUlNCIHNsYXZlIG5hY2tcbiIpOwo+ID4gIAkJCXJldHVybiAtRUlOVkFMOwo+ ID4gIAkJCj4gPiAgCQl9Cj4gPiAKPiA+IC0JCWlmIChyc2ItPnN0YXR1cyAmIFJTQl9JTlRTX1RS QU5TX0VSUl9EQVRBKSB7Cj4gPiArCQlpZiAoc3RhdHVzICYgUlNCX0lOVFNfVFJBTlNfRVJSX0RB VEEpIHsKPiA+IAo+ID4gIAkJCWRldl9kYmcocnNiLT5kZXYsICJSU0IgdHJhbnNmZXIgZGF0YQo+ IAo+IGVycm9yXG4iKTsKPiAKPiA+ICAJCQlyZXR1cm4gLUVJTzsKPiA+ICAJCQo+ID4gIAkJfQoK CgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4 LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFk Lm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFy bS1rZXJuZWwK