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Mon, 10 May 2021 10:18:51 +0000 X-Originating-IP: 90.89.138.59 Received: from xps13 (lfbn-tou-1-1325-59.w90-89.abo.wanadoo.fr [90.89.138.59]) (Authenticated sender: miquel.raynal@bootlin.com) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id B28F26000F; Mon, 10 May 2021 10:18:42 +0000 (UTC) Date: Mon, 10 May 2021 12:18:37 +0200 From: Miquel Raynal To: Daniel Golle Cc: linux-mtd@lists.infradead.org, Vignesh Raghavendra , Richard Weinberger , David Woodhouse Subject: Re: [PATCH v3] mtd: super: don't rely on mtdblock device minor Message-ID: <20210510121837.14274d4f@xps13> In-Reply-To: References: Organization: Bootlin X-Mailer: Claws Mail 3.17.7 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210510_031850_157221_DB548D79 X-CRM114-Status: GOOD ( 20.39 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGkgRGFuaWVsLAoKRGFuaWVsIEdvbGxlIDxkYW5pZWxAbWFrcm90b3BpYS5vcmc+IHdyb3RlIG9u IE1vbiwgMTIgQXByIDIwMjEgMTY6MTQ6NDQKKzAxMDA6Cgo+IEZvciBibGt0cmFucyBkZXZpY2Vz IHdpdGggcGFydGl0aW9ucyAoaWUuIHBhcnRfYml0cyAhPSAwKSB0aGUKPiBhc3N1bXB0aW9uIHRo YXQgdGhlIG1pbm9yIG51bWJlciBvZiB0aGUgbXRkYmxvY2sgZGV2aWNlIG1hdGNoZXMKPiB0aGUg bXRkbnVtIGRvZXNuJ3QgaG9sZCB0cnVlLgo+IFByb3Blcmx5IHJlc29sdmUgbXRkIGRldmljZSBm cm9tIGJsa3RyYW5zIGxheWVyIGluc3RlYWQuCgpVbmZvcnR1bmF0ZWx5IEkgY2Fubm90IGFwcGx5 IHlvdXIgcGF0Y2ggYW55bW9yZSwgd291bGQgeW91IG1pbmQKcmViYXNpbmcgaXQgb24gdG9wIG9m IHY1LjEzLXJjMT8KClRoYW5rcywKTWlxdcOobAoKPiAKPiBTaWduZWQtb2ZmLWJ5OiBEYW5pZWwg R29sbGUgPGRhbmllbEBtYWtyb3RvcGlhLm9yZz4KPiAtLS0KPiB2MzogZml4IHR5cG8gaW4gcGF0 Y2ggZGVzY3JpcHRpb24KPiB2MjogcmVtb3ZlIEJVRygpIGNhbGxzIGFzIHJlcXVlc3RlZCBieSBN aXF1ZWwgUmF5bmFsCj4gCj4gIGRyaXZlcnMvbXRkL210ZHN1cGVyLmMgfCAzMSArKysrKysrKysr KysrKysrKysrKysrKystLS0tLS0tCj4gIDEgZmlsZSBjaGFuZ2VkLCAyNCBpbnNlcnRpb25zKCsp LCA3IGRlbGV0aW9ucygtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL210ZC9tdGRzdXBlci5j IGIvZHJpdmVycy9tdGQvbXRkc3VwZXIuYwo+IGluZGV4IGMzZTIwOTgzNzJmMmUuLmQzYWY4MGE3 Y2U4NmUgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9tdGQvbXRkc3VwZXIuYwo+ICsrKyBiL2RyaXZl cnMvbXRkL210ZHN1cGVyLmMKPiBAQCAtOSw2ICs5LDcgQEAKPiAgICovCj4gIAo+ICAjaW5jbHVk ZSA8bGludXgvbXRkL3N1cGVyLmg+Cj4gKyNpbmNsdWRlIDxsaW51eC9tdGQvYmxrdHJhbnMuaD4K PiAgI2luY2x1ZGUgPGxpbnV4L25hbWVpLmg+Cj4gICNpbmNsdWRlIDxsaW51eC9leHBvcnQuaD4K PiAgI2luY2x1ZGUgPGxpbnV4L2N0eXBlLmg+Cj4gQEAgLTEyMSw3ICsxMjIsOCBAQCBpbnQgZ2V0 X3RyZWVfbXRkKHN0cnVjdCBmc19jb250ZXh0ICpmYywKPiAgewo+ICAjaWZkZWYgQ09ORklHX0JM T0NLCj4gIAlzdHJ1Y3QgYmxvY2tfZGV2aWNlICpiZGV2Owo+IC0JaW50IHJldCwgbWFqb3I7Cj4g KwlzdHJ1Y3QgbXRkX2Jsa3RyYW5zX2RldiAqYmxrdHJhbnNfZGV2Owo+ICsJaW50IHJldCwgbWFq b3IsIHBhcnRfYml0czsKPiAgI2VuZGlmCj4gIAlpbnQgbXRkbnI7Cj4gIAo+IEBAIC0xNjksMjEg KzE3MSwzNiBAQCBpbnQgZ2V0X3RyZWVfbXRkKHN0cnVjdCBmc19jb250ZXh0ICpmYywKPiAgCS8q IHRyeSB0aGUgb2xkIHdheSAtIHRoZSBoYWNrIHdoZXJlIHdlIGFsbG93ZWQgdXNlcnMgdG8gbW91 bnQKPiAgCSAqIC9kZXYvbXRkYmxvY2skKG4pIGJ1dCBkaWRuJ3QgYWN0dWFsbHkgX3VzZV8gdGhl IGJsb2NrZGV2Cj4gIAkgKi8KPiAtCWJkZXYgPSBsb29rdXBfYmRldihmYy0+c291cmNlKTsKPiAr CWJkZXYgPSBibGtkZXZfZ2V0X2J5X3BhdGgoZmMtPnNvdXJjZSwgRk1PREVfUkVBRCwgTlVMTCk7 Cj4gIAlpZiAoSVNfRVJSKGJkZXYpKSB7Cj4gIAkJcmV0ID0gUFRSX0VSUihiZGV2KTsKPiAgCQll cnJvcmYoZmMsICJNVEQ6IENvdWxkbid0IGxvb2sgdXAgJyVzJzogJWQiLCBmYy0+c291cmNlLCBy ZXQpOwo+ICAJCXJldHVybiByZXQ7Cj4gIAl9Cj4gLQlwcl9kZWJ1ZygiTVREU0I6IGxvb2t1cF9i ZGV2KCkgcmV0dXJuZWQgMFxuIik7Cj4gKwlwcl9kZWJ1ZygiTVREU0I6IGJsa2Rldl9nZXRfYnlf cGF0aCgpIHJldHVybmVkIDBcbiIpOwo+ICAKPiAgCW1ham9yID0gTUFKT1IoYmRldi0+YmRfZGV2 KTsKPiAtCW10ZG5yID0gTUlOT1IoYmRldi0+YmRfZGV2KTsKPiAtCWJkcHV0KGJkZXYpOwo+ICAK PiAtCWlmIChtYWpvciA9PSBNVERfQkxPQ0tfTUFKT1IpCj4gLQkJcmV0dXJuIG10ZF9nZXRfc2Jf YnlfbnIoZmMsIG10ZG5yLCBmaWxsX3N1cGVyKTsKPiArCWlmIChtYWpvciA9PSBNVERfQkxPQ0tf TUFKT1IpIHsKPiArCQlpZiAoIWJkZXYtPmJkX2Rpc2spIHsKPiArCQkJYmxrZGV2X3B1dChiZGV2 LCBGTU9ERV9SRUFEKTsKPiArCQkJcmV0dXJuIC1FSU5WQUw7Cj4gKwkJfQo+ICsKPiArCQlibGt0 cmFuc19kZXYgPSAoc3RydWN0IG10ZF9ibGt0cmFuc19kZXYgKikoYmRldi0+YmRfZGlzay0+cHJp dmF0ZV9kYXRhKTsKPiArCQlpZiAoIWJsa3RyYW5zX2RldiB8fCAhYmxrdHJhbnNfZGV2LT50cikg ewo+ICsJCQlibGtkZXZfcHV0KGJkZXYsIEZNT0RFX1JFQUQpOwo+ICsJCQlyZXR1cm4gLUVJTlZB TDsKPiArCQl9Cj4gKwkJbXRkbnIgPSBibGt0cmFuc19kZXYtPmRldm51bTsKPiArCQlwYXJ0X2Jp dHMgPSBibGt0cmFuc19kZXYtPnRyLT5wYXJ0X2JpdHM7Cj4gKwkJYmxrZGV2X3B1dChiZGV2LCBG TU9ERV9SRUFEKTsKPiArCQlpZiAoTUlOT1IoYmRldi0+YmRfZGV2KSAhPSAobXRkbnIgPDwgcGFy dF9iaXRzKSkKPiArCQkJcmV0dXJuIC1FSU5WQUw7Cj4gIAo+ICsJCXJldHVybiBtdGRfZ2V0X3Ni X2J5X25yKGZjLCBtdGRuciwgZmlsbF9zdXBlcik7Cj4gKwl9Cj4gKwlibGtkZXZfcHV0KGJkZXYs IEZNT0RFX1JFQUQpOwo+ICAjZW5kaWYgLyogQ09ORklHX0JMT0NLICovCj4gIAo+ICAJaWYgKCEo ZmMtPnNiX2ZsYWdzICYgU0JfU0lMRU5UKSkKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXggTVREIGRpc2N1c3Npb24gbWFpbGluZyBs aXN0Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbXRk Lwo=