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[106.168.128.197]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-72407a56a4asm12317556b3a.187.2024.11.12.18.06.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 Nov 2024 18:06:25 -0800 (PST) Message-ID: Date: Wed, 13 Nov 2024 11:06:21 +0900 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] mtd: spinand: Introduce a way to avoid raw access To: Miquel Raynal Cc: linux-mtd@lists.infradead.org, richard@nod.at, vigneshr@ti.com, tudor.ambarus@linaro.org, pratyush@kernel.org, mwalle@kernel.org, kr.kim@skyhighmemory.com, zhi.feng@skyhighmemory.com, Bacem.Daassi@infineon.com, Takahiro Kuwano References: <81c9caf04c94cba1a5ae4ba79dd09e0789583fcd.1730340421.git.Takahiro.Kuwano@infineon.com> <87bjylsirs.fsf@bootlin.com> Content-Language: en-US From: Takahiro Kuwano In-Reply-To: <87bjylsirs.fsf@bootlin.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241112_180627_306417_C0C38EDA X-CRM114-Status: GOOD ( 18.93 ) 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 SGksCgpPbiAxMS8xMi8yMDI0IDM6NTQgQU0sIE1pcXVlbCBSYXluYWwgd3JvdGU6Cj4gSGksCj4g Cj4gT24gMzEvMTAvMjAyNCBhdCAxMToyMTo1NCArMDksIHRrdXc1ODQ5MjRAZ21haWwuY29tIHdy b3RlOgo+IAo+PiBGcm9tOiBUYWthaGlybyBLdXdhbm8gPFRha2FoaXJvLkt1d2Fub0BpbmZpbmVv bi5jb20+Cj4+Cj4+IFNreUhpZ2ggc3BpbmFuZCBkZXZpY2UgaGFzIEVDQyBlbmFibGUgYml0IGlu IGNvbmZpZ3VyYXRpb24gcmVnaXN0ZXIgYnV0Cj4+IGl0IG11c3QgYmUgYWx3YXlzIGVuYWJsZWQu IElmIEVDQyBpcyBkaXNhYmxlZCwgcmVhZCBhbmQgd3JpdGUgb3BzCj4+IHJlc3VsdHMgaW4gdW5k ZXRlcm1pbmVkIHN0YXRlLiBGb3Igc3VjaCBkZXZpY2VzLCBhIHdheSB0byBhdm9pZCByYXcKPj4g YWNjZXNzIGlzIG5lZWRlZC4KPj4KPj4gSW50cm9kdWNlIFNQSU5BTkRfTk9fUkFXX0FDQ0VTUyBm bGFnIHRvIGFkdmVydGlzZSB0aGUgZGV2aWNlIGRvZXMgbm90Cj4+IHN1cHBvcnQgcmF3IGFjY2Vz cy4gUmVhZCBhbmQgd3JpdGUgcGFnZSBpbiByYXcgbW9kZSBmb3IgdGhlIGRldmljZQo+PiByZXR1 cm5zIGVycm9yLgo+Pgo+PiBDaGVja2luZyBhbmQgbWFya2luZyBCQk0gbmVlZCB0byBiZSBwZXJm b3JtZWQgd2l0aCBFQ0MgZW5hYmxlZCB0byByZWFkCj4+IGFuZCB3cml0ZSB0aGUgQkJNIGNvcnJl Y3RseS4KPiAKPiBJIHNlZSB5b3VyIHBvaW50IGJ1dCBJJ20gYSBiaXQgcHV6emxlZCBieSBob3cg aXQncyBiZWluZyBkb25lLgo+IAo+IEZpcnN0LCB5b3UgZGlzcmVnYXJkIGNvbXBsZXRlbHkgdGhl IGlzYmFkKCkgYW5kIG1hcmtiYWQoKQo+IHNpdHVhdGlvbnMuIFBsZWFzZSBoYXZlIGxvb2sgaW50 byB0aGF0IGJlY2F1c2UgdGhlc2UgZnVuY3Rpb25zIGFyZQo+IGJyb2tlbiB3aXRoIHlvdXIgZGV2 aWNlcy4KPiAKWWVzLi4uIG5vdyBJIHVuZGVyc3RhbmQgaG93IHRoZXkgYXJlIGJyb2tlbi4KCj4g U2Vjb25kLCB3aGF0IGFib3V0IGFkZGluZyB0aGlzIGRldGFpbCB0byB0aGUgb25kaWUgRUNDIGVu Z2luZT8gWW91IGNvdWxkCj4gc2ltcGx5IHJldHVybiBhbiBlcnJvciBmcm9tIHRoZXJlLCBzbyBi YXNpY2FsbHkgYSBzaW5nbGUgKG9yIG1heWJlIHR3bykKPiBjaGFuZ2VzIG92ZXJhbGwuCj4gClRo YW5rIHlvdSBmb3IgdGhlIHN1Z2dlc3Rpb24uCkhvdyBhYm91dCBjaGFuZ2UgbGlrZSBiZWxvdyBp biBwcmVwYXJlX2ZpbmlzaF9pb19yZXEoKT8KCnN0YXRpYyBpbnQgc3BpbmFuZF9vbmRpZV9lY2Nf cHJlcGFyZV9pb19yZXEoc3RydWN0IG5hbmRfZGV2aWNlICpuYW5kLAoJCQkJCSAgICBzdHJ1Y3Qg bmFuZF9wYWdlX2lvX3JlcSAqcmVxKQp7CglzdHJ1Y3Qgc3BpbmFuZF9kZXZpY2UgKnNwaW5hbmQg PSBuYW5kX3RvX3NwaW5hbmQobmFuZCk7Cglib29sIGVuYWJsZSA9IChyZXEtPm1vZGUgIT0gTVRE X09QU19SQVcpOwoKKwkvKgorCSAqIEZvciB0aGUgZGV2aWNlcyB0aGF0IHByb2hpYml0IHJhdyBh Y2Nlc3MgKG9uLWRpZSBFQ0MgbXVzdCBiZSBhbHdheXMKKwkgKiBlbmFibGVkKSwgcmV0dXJuIGVy cm9yIGluIGNhc2Ugb2YgcmF3IGRhdGEgYWNjZXNzLiBBY2Nlc3NpbmcgdG8gT09CCisJICogbmVl ZHMgdG8gYmUgYWxsb3dlZCB3aXRoIG9uLWRpZSBFQ0MgZW5hYmxlZCB0byBzdXBwb3J0IEJCTSBj aGVja2luZworCSAqIGFuZCBtYXJraW5nLgorCSAqLworCWlmICghZW5hYmxlICYmIHNwaW5hbmQt PmZsYWdzICYgU1BJTkFORF9OT19SQVdfQUNDRVNTKSB7CisJCWlmIChyZXEtPmRhdGFsZW4pCisJ CQlyZXR1cm4gLUVOT1RTVVBQOworCisJCWVuYWJsZSA9IHRydWU7CisJfQouLi4KCj4gVGhhbmtz LAo+IE1pcXXDqGwKClRoYW5rcyEKVGFrYWhpcm8KCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eCBNVEQgZGlzY3Vzc2lvbiBtYWlsaW5n IGxpc3QKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1t dGQvCg==