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bh=QlKEcZeAc1190MKGLBijNhcT+YDIGjvAChGhzCE/GH8=; b=nqQAP4Pt23iUC2IyfmF8qi8PH3UAztMGXpZuWZfM9xhz88G3MTYdxQpuSzyk9Z3D+10Y7s R25UD7bGMsTQA9bHF9J86EmMAe0m8gy8AZTBuQC6kTwyjuxgn5Jzi5imq06kWKSbnmVKCf Tb0GkBHdD2NoPtVQJ7Mw7pv9+IDpD9/vdzT66nKsm2J8CUK2EtiU49KPf4b97pYihJMQUu QcbdoE7chXeMVq4JWxGP0HVWGlhgCyHhBa8YWf7e/+aogV+nnWe96cQ2EDnhyHWp0p1b5r Idnb0HwH/4x4/ZzjwSFh1I8MgEH7Y5W1hP6mDxA5HdhEpXm68AW//g4mv6CH9g== From: Miquel Raynal To: Cheng Ming Lin Cc: richard@nod.at, chengzhihao1@huawei.com, vigneshr@ti.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, alvinzhou@mxic.com.tw, leoyu@mxic.com.tw, Cheng Ming Lin Subject: Re: [PATCH 1/1] mtd: ubi: skip programming unused bits in ubi headers In-Reply-To: <20251106054940.2728641-2-linchengming884@gmail.com> (Cheng Ming Lin's message of "Thu, 6 Nov 2025 13:49:40 +0800") References: <20251106054940.2728641-1-linchengming884@gmail.com> <20251106054940.2728641-2-linchengming884@gmail.com> User-Agent: mu4e 1.12.7; emacs 30.2 Date: Thu, 06 Nov 2025 10:10:27 +0100 Message-ID: <87o6pf8r24.fsf@bootlin.com> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251106_011041_560463_30B77399 X-CRM114-Status: GOOD ( 22.17 ) 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 SGVsbG8sCgpPbiAwNi8xMS8yMDI1IGF0IDEzOjQ5OjQwICswOCwgQ2hlbmcgTWluZyBMaW4gPGxp bmNoZW5nbWluZzg4NEBnbWFpbC5jb20+IHdyb3RlOgoKPiBGcm9tOiBDaGVuZyBNaW5nIExpbiA8 Y2hlbmdtaW5nbGluQG14aWMuY29tLnR3Pgo+Cj4gVGhpcyBwYXRjaCBwcmV2ZW50cyB1bm5lY2Vz c2FyeSBwcm9ncmFtbWluZyBvZiBiaXRzIGluIGVjX2hkciBhbmQKPiB2aWRfaGRyIHRoYXQgYXJl IG5vdCB1c2VkIG9yIHJlYWQgZHVyaW5nIG5vcm1hbCBVQkkgb3BlcmF0aW9uLiBUaGVzZQo+IHVu dXNlZCBiaXRzIGFyZSB0eXBjaWFsbHkgYWxyZWFkeSBzZXQgdG8gMSBpbiBlcmFzZWQgZmxhc2gg YW5kIGRvIG5vdAo+IG5lZWQgdG8gYmUgZXhwbGljaXRseSBwcm9ncmFtbWVkIHRvIDAgaWYgdGhl eSBhcmUgbm90IHVzZWQuCj4KPiBQcm9ncmFtbWluZyBzdWNoIHVudXNlZCBhcmVhcyBvZmZlcnMg bm8gZnVuY3Rpb25hbCBiZW5lZml0IGFuZCBtYXkKPiByZXN1bHQgaW4gdW5uZWNlc3NhcnkgZmxh c2ggd2VhciwgcmVkdWNpbmcgdGhlIG92ZXJhbGwgbGlmZXRpbWUgb2YgdGhlCj4gZGV2aWNlLiBC eSBza2lwcGluZyB0aGVzZSB3cml0ZXMsIHdlIHByZXNlcnZlIHRoZSBmbGFzaCBzdGF0ZSBhcyBt dWNoIGFzCj4gcG9zc2libGUgYW5kIG1pbmltaXplIHdlYXIgY2F1c2VkIGJ5IHJlZHVuZGFudCBv cGVyYXRpb25zLgo+Cj4gVGhpcyBjaGFuZ2UgZW5zdXJlcyB0aGF0IG9ubHkgbmVjZXNzYXJ5IGZp ZWxkcyBhcmUgd3JpdHRlbiB3aGVuIHByZXBhcmluZwo+IFVCSSBoZWFkZXJzLCBpbXByb3Zpbmcg Zmxhc2ggZWZmaWNpZW5jeSB3aXRob3V0IGFmZmVjdGluZyBmdW5jdGlvbmFsaXR5Lgo+Cj4gQWRk aXRpb25hbGx5LCB0aGUgS2lveGlhIFRDNThOVkcxUzNIVEEwMCBkYXRhc2hlZXQgKHBhZ2UgNjMp IGFsc28gbm90ZXMKPiB0aGF0IGNvbnRpbnVvdXMgcHJvZ3JhbS9lcmFzZSBjeWNsaW5nIHdpdGgg YSBoaWdoIHBlcmNlbnRhZ2Ugb2YgJzAnIGJpdHMKPiBpbiB0aGUgZGF0YSBwYXR0ZXJuIGNhbiBh Y2NlbGVyYXRlIGJsb2NrIGVuZHVyYW5jZSBkZWdyYWRhdGlvbi4KPiBUaGlzIGZ1cnRoZXIgc3Vw cG9ydHMgYXZvaWRpbmcgbGFyZ2UgMHgwMCBwYXR0ZXJucy4KPgo+IExpbms6IGh0dHBzOi8vZXVy b3BlLmtpb3hpYS5jb20vY29udGVudC9kYW0va2lveGlhL25ld2lkci9wcm9kdWN0aW5mby9kYXRh c2hlZXQvMjAxOTEwL0RTVF9UQzU4TlZHMVMzSFRBMDAtVERFX0VOXzMxNDQyLnBkZgo+Cj4gU2ln bmVkLW9mZi1ieTogQ2hlbmcgTWluZyBMaW4gPGNoZW5nbWluZ2xpbkBteGljLmNvbS50dz4KClRo YW5rcyBmb3IgdGhpcyB2ZXJ5IGNsZWFyIGFuZCBkZXRhaWxlZCBjb21taXQgbG9nLCBhcyB3ZWxs IGFzIGZvciB0aGUKd2VsbCB3cml0dGVuIGNvdmVyIGxldHRlci4gSSBhbSBwZXJzb25hbGx5IGZp bmUgd2l0aCB0aGUgb3ZlcmFsbCBpZGVhIG9mCmNsZWFyaW5nIHRoZXNlIHVudXNlZCBiaXRzIHRv IDEuIFlldCwgSSBoYXZlIG9uZSBjb25jZXJuIHJlZ2FyZGluZyB0aGUKaW1wbGVtZW50YXRpb24s IHBsZWFzZSBzZWUgYmVsb3cuCgo+IC0tLQo+ICBkcml2ZXJzL210ZC91YmkvaW8uYyB8IDcgKysr KysrKwo+ICAxIGZpbGUgY2hhbmdlZCwgNyBpbnNlcnRpb25zKCspCj4KPiBkaWZmIC0tZ2l0IGEv ZHJpdmVycy9tdGQvdWJpL2lvLmMgYi9kcml2ZXJzL210ZC91YmkvaW8uYwo+IGluZGV4IGE0OTk5 YmNlNC4uYzIxMjQyYTE0IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvbXRkL3ViaS9pby5jCj4gKysr IGIvZHJpdmVycy9tdGQvdWJpL2lvLmMKPiBAQCAtODY4LDYgKzg2OCw4IEBAIGludCB1YmlfaW9f d3JpdGVfZWNfaGRyKHN0cnVjdCB1YmlfZGV2aWNlICp1YmksIGludCBwbnVtLAo+ICAJCXJldHVy biAtRVJPRlM7Cj4gIAl9Cj4gIAo+ICsJbWVtc2V0KChjaGFyICopZWNfaGRyICsgVUJJX0VDX0hE Ul9TSVpFLCAweEZGLCB1YmktPmVjX2hkcl9hbHNpemUgLSBVQklfRUNfSERSX1NJWkUpOwo+ICsK PiAgCWVyciA9IHViaV9pb193cml0ZSh1YmksIGVjX2hkciwgcG51bSwgMCwgdWJpLT5lY19oZHJf YWxzaXplKTsKPiAgCXJldHVybiBlcnI7Cj4gIH0KPiBAQCAtMTE1MCw2ICsxMTUyLDExIEBAIGlu dCB1YmlfaW9fd3JpdGVfdmlkX2hkcihzdHJ1Y3QgdWJpX2RldmljZSAqdWJpLCBpbnQgcG51bSwK PiAgCQlyZXR1cm4gLUVST0ZTOwo+ICAJfQo+ICAKPiArCWlmICh1YmktPnZpZF9oZHJfc2hpZnQp Cj4gKwkJbWVtc2V0KChjaGFyICopcCwgMHhGRiwgdWJpLT52aWRfaGRyX2Fsc2l6ZSAtIFVCSV9W SURfSERSX1NJWkUpOwo+ICsJZWxzZQo+ICsJCW1lbXNldCgoY2hhciAqKXAgKyBVQklfVklEX0hE Ul9TSVpFLCAweEZGLCB1YmktPnZpZF9oZHJfYWxzaXplIC0gVUJJX1ZJRF9IRFJfU0laRSk7CgpI ZXJlIEkgYW0gcmVhY2hpbmcgdGhlIGxpbWl0cyBvZiBteSBVQkkga25vd2xlZGdlLCBzbyBJIHdv dWxkIHByZWZlcgpSaWNoYXJkIHRvIChpbil2YWxpZGF0ZSB3aGF0IEkgYW0gc2F5aW5nLCBidXQg QUZBSVUsIHRoZSBWSUQgaGVhZGVyIGNhbgpiZSBsaXRlcmFsbHkgYW55d2hlcmUgaW4gdGhlIHBh Z2UsIG5vdCBqdXN0IGF0IHRoZSBzdGFydCBvciBlbmQgb2YgYQpzdWJwYWdlLCBzbyBpbiB0aGUg dmlkX2hkcl9zaGlmdCBJIHdvdWxkIGV4cGVjdCBzb21lIGV4dHJhIG1hdGhzIHRvCmhhcHBlbiwg bm8/CgpIZXJlIGlzIGFuIGV4Y2VycHQgb2YgdGhlIG1haW4gY29tbWVudCBhdCB0aGUgdG9wIG9m IHRoZSBpby5jIGZpbGU6CgogICAgKiBBcyBpdCB3YXMgbm90ZWQgYWJvdmUsIHRoZSBWSUQgaGVh ZGVyIG1heSBzdGFydCBhdCBhIG5vbi1hbGlnbmVkCiAgICAqIG9mZnNldC4gRm9yIGV4YW1wbGUs IGluIGNhc2Ugb2YgYSAyS2lCIHBhZ2UgTkFORCBmbGFzaCB3aXRoIGEgNTEyCiAgICAqIGJ5dGVz IHN1Yi1wYWdlLCB0aGUgVklEIGhlYWRlciBtYXkgcmVzaWRlIGF0IG9mZnNldCAxOTg0IHdoaWNo IGlzCiAgICAqIHRoZSBsYXN0IDY0IGJ5dGVzIG9mIHRoZSAqIGxhc3Qgc3ViLXBhZ2UgKEVDIGhl YWRlciBpcyBhbHdheXMgYXQKICAgICogb2Zmc2V0IHplcm8pLgoKSSBhbSBub3Qgc3VyZSB0aGlz IGlzIHN1cGVyIGNvbW1vbiB0b2RheSB0aG91Z2guCgpUaGFua3MsCk1pcXXDqGwKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eCBNVEQg ZGlzY3Vzc2lvbiBtYWlsaW5nIGxpc3QKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1h bi9saXN0aW5mby9saW51eC1tdGQvCg==