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Tue, 4 Jul 2023 13:55:08 +0000 (UTC) Date: Tue, 4 Jul 2023 15:55:07 +0200 From: Miquel Raynal To: Lothar =?UTF-8?B?V2HDn21hbm4=?= Cc: Felix Matouschek , Richard Weinberger , Vignesh Raghavendra , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [RFC] Bad ecc layout in drivers/mtd/nand/spi/xtx.c Message-ID: <20230704155507.0643a856@xps-13> In-Reply-To: <20230704123743.7f4c87af@ipc1.ka-ro> References: <20230704123743.7f4c87af@ipc1.ka-ro> Organization: Bootlin X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.33; 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-20230704_065515_998020_7AA60705 X-CRM114-Status: GOOD ( 23.55 ) 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 SGkgTG90aGFyLAoKVGhhbmtzIGZvciB0aGUgcmVwb3J0LgoKTFdAS0FSTy1lbGVjdHJvbmljcy5k ZSB3cm90ZSBvbiBUdWUsIDQgSnVsIDIwMjMgMTI6Mzc6NDMgKzAyMDA6Cgo+IEhpLAo+IAo+IHdo aWxlIHRyeWluZyB0byBhZGQgc3VwcG9ydCBmb3IgdGhlICdYVDI2RzAxQycgdmFyaWFudCBvZiB0 aGUgWFRYCj4gU1BJLW5hbmQgY2hpcCBJIG5vdGljZWQgYSBmbGF3IGluIHRoZSBFQ0MgbGF5b3V0 IG9mIHRoZSBleGlzdGluZwo+IGRyaXZlci4KPiBBY2NvcmRpbmcgdG8gdGhlICBYVDI2RzAxQSBk YXRhc2hlZXQgdGhlIGZpcnN0IGVpZ2h0IGJ5dGVzIG9mIHRoZSBPT0IKPiBhcmVhIGFyZSBub3Qg cHJvdGVjdGVkIGJ5IEVDQzoKPiBPZmZzZXQgICAgICBFQ0MgIEJ5dGVzICBBcmVhICAgICAgICAg ICAgICAgRGVzY3JpcHRpb24KPiA4MDBIIDgwN0ggICAgTm8gICAgICA4ICBTcGFyZSA0LCBHcm91 cCBFICAgVGhpcyBBcmVhIGlzIG5vdCBjb3ZlcmVkIGJ5IGludGVybmFsIEVDQywKPiAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgODAwSCBpcyByZXNlcnZlZCBmb3Ig YmFkIGJsb2NrIG1hcmsgICAgICAgIAo+IDgwOEggODJGSCAgIFllcyA0MCBTcGFyZSA1ICwgR3Jv dXAgRiAgICAgICBVc2VyIE1ldGEgRGF0YSBBcmVhIGNvdmVyZWQgYnkgaW50ZXJuYWwgRUNDLgo+ IDgzMEggODNGSCAgICBObyAxNiBTcGFyZSA2ICwgR3JvdXAgRyAgICAgICBFQ0NfRU49MTogdGhp cyBhcmVhIGNvbnRhaW5zIEludGVybmFsIEVDQyBEYXRhLCBSZWFkLU9ubHksCj4gICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIFByb2dyYW1taW5nIHRvIHRoaXMgYXJl YSB3aWxsIGJlIGlnbm9yZWQKPiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgRUNDX0VOPTA6IHRoaXMgYXJlYSBpcyB3cml0YWJsZSBmb3IgdXNlcgo+IAo+IEJ1dCB0 aGUgZHJpdmVyIGRlZmluZXMgYnl0ZXMgMS4uNDcgYXMgdXNlciBPT0IgYXJlYToKPiB8c3RhdGlj IGludCB4dDI2ZzB4YV9vb2JsYXlvdXRfZnJlZShzdHJ1Y3QgbXRkX2luZm8gKm10ZCwgaW50IHNl Y3Rpb24sCj4gfAkJCQkgICBzdHJ1Y3QgbXRkX29vYl9yZWdpb24gKnJlZ2lvbikKPiB8ewo+IHwJ aWYgKHNlY3Rpb24pCj4gfAkJcmV0dXJuIC1FUkFOR0U7Cj4gfAo+IHwJcmVnaW9uLT5vZmZzZXQg PSAxOwo+IHwJcmVnaW9uLT5sZW5ndGggPSA0NzsKPiB8Cj4gfAlyZXR1cm4gMDsKPiB8fQo+IAo+ IElNTyB0aGlzIHNob3VsZCBiZToKPiB8CXJlZ2lvbi0+b2Zmc2V0ID0gODsKPiB8CXJlZ2lvbi0+ bGVuZ3RoID0gNDA7Cj4gdG8gaGF2ZSB0aGUgd2hvbGUgdXNlciBvb2IgYXJlYSBwcm90ZWN0ZWQg YnkgRUNDLgo+IAo+IE9idmlvdXNseSB0aGlzIGNhbm5vdCBzaW1wbHkgYmUgY2hhbmdlZCBpbiB0 aGUgZHJpdmVyIGJlY2F1c2UgaXQgd291bGQKPiBicmVhayBhY2Nlc3MgdG8gZmxhc2ggdGhhdCB3 YXMgcHJvZ3JhbW1lZCB3aXRoIHRoZSBjdXJyZW50IHBhcmFtZXRlcnMuCj4gU2luY2UgdGhlIGRh dGEgc3RydWN0dXJlcyB0aGF0IHByb3ZpZGUgdGhlIG9vYiBsYXlvdXQgYXJlIGNvbXBsZXRlbHkK PiBzdGF0aWMgYW5kIGNhbm5vdCBiZSBtb2RpZmllZCBhdCBydW50aW1lIChlLmcuIGRlcGVuZGlu ZyBvbiBzb21lIERUQgo+IHByb3BlcnR5KSB0aGUgb25seSB3YXkgSSBzZWUgdG8gcHJvdmlkZSBh IGxheW91dCB3aXRoIEVDQyBwcm90ZWN0aW9uCj4gZm9yIHRoZSB3aG9sZSB1c2VyIG1ldGFkYXRh IHdvdWxkIGJlIGEgS2NvbmZpZyBvcHRpb24gdG8gc2VsZWN0IG9uZSBvcgo+IHRoZSBvdGhlciBs YXlvdXQgYXQgY29tcGlsZSB0aW1lLgo+IAo+IEFueSBjb21tZW50cyBvciBiZXR0ZXIgaWRlYXM/ CgpUaGVzZSBvZmZzZXRzIGRvIG5vdCByZWZsZWN0IHRoZSBwcm90ZWN0ZWQgYXJlYSBidXQgdGhl IHVzZXIgYXJlYSwKd2hpY2ggY2FuIGJlIHVzZWQgKGF0IHRoZSB1c2VycyBvd24gcmlza3MpLiBT b21laG93IHRoZSBvbmx5IHJlYWwgdXNlcgppcyBqZmZzMiB1cHN0cmVhbSwgYW5kIGpmZnMyIHdh cyBtZWFudCB0byBiZSByZXBsYWNlZCBhIGxvbmcgdGltZSBhZ28KYnkgVUJJIHdoaWNoIGFjdHVh bGx5IHdvcmthcm91bmQtZWQgdGhpcyBsaW1pdGF0aW9uIGJ5IG5vdCB1c2luZyB0aGUKT09CIGFy ZWEgYXQgYWxsLiBXZSBkbyBub3QgaGF2ZSBhIHJlYWwgd2F5IHRvIGRpc3Rpbmd1aXNoIHdoYXQg aXMgRUNDCnByb3RlY3RlZCBvciBub3QgaW4gdGhlIE9PQiBhcmVhLgoKU28gdW5sZXNzIHlvdSB3 YW50IHRvIHNvbHZlIGEgcmVhbCBwcm9ibGVtLCBJIHdvdWxkIGFkdmlzZSB0byBrZWVwIGl0CmFz IGl0IGlzLgoKVGhhbmtzLApNaXF1w6hsCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KTGludXggTVREIGRpc2N1c3Npb24gbWFpbGluZyBsaXN0 Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbXRkLwo=