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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTA03-0007Op-09; Mon, 27 Apr 2020 20:05:07 +0000 Received: from relay9-d.mail.gandi.net ([217.70.183.199]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jT9zz-0006Ba-CO for linux-mtd@lists.infradead.org; Mon, 27 Apr 2020 20:05:05 +0000 X-Originating-IP: 91.224.148.103 Received: from xps13 (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 785C3FF802; Mon, 27 Apr 2020 20:05:00 +0000 (UTC) Date: Mon, 27 Apr 2020 22:04:59 +0200 From: Miquel Raynal To: Boris Brezillon Subject: Re: [PATCH 16/17] mtd: rawnand: cafe: Handle non-32bit aligned reads/writes Message-ID: <20200427220459.32a26073@xps13> In-Reply-To: <20200427082028.394719-17-boris.brezillon@collabora.com> References: <20200427082028.394719-1-boris.brezillon@collabora.com> <20200427082028.394719-17-boris.brezillon@collabora.com> Organization: Bootlin X-Mailer: Claws Mail 3.17.4 (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-20200427_130503_566598_2D7AD351 X-CRM114-Status: GOOD ( 17.47 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mtd@lists.infradead.org, Tudor Ambarus , David Woodhouse , Vignesh Raghavendra , Richard Weinberger 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 SGkgQm9yaXMsCgpCb3JpcyBCcmV6aWxsb24gPGJvcmlzLmJyZXppbGxvbkBjb2xsYWJvcmEuY29t PiB3cm90ZSBvbiBNb24sIDI3IEFwcgoyMDIwIDEwOjIwOjI2ICswMjAwOgoKPiBUaGUgc3BlYyBz YXlzIHRoZSB3cml0ZS9yZWFkIGJ1ZmZlcnMgc2hvdWxkIGJlIGZpbGxlZC9yZWFkIDMyYml0cyBh dCBhCj4gdGltZS4gV2hpbGUgbW9zdCBvZiB0aGUgdGltZSB0aGUgcmVhZHMvd3JpdGVzIGFyZSBh bGlnbmVkIG9uIDQgYnl0ZXMsCj4gd2Ugc2hvdWxkIG1ha2UgdGhlIGltcGxlbWVudGF0aW9uIG1v cmUgcm9idXN0IHRvIG5vbi11c3VhbCBOQU5ECj4gb3BlcmF0aW9ucy4KCldlbGwsIGlmIEkgZGlk bid0IGdldCBjb25mdXNlZCBieSB0aGUgcHJldmlvdXMgY2hhbmdlcywgSSB0aGluayB0aGVzZQph cmUgdXNlZCBieSAtPmV4ZWNfb3AoKSBhbmQgYXQgYm9vdCB0aW1lIHRoZXJlIGFyZSAyQiAoSUQp LCAzQiAoSQpkb24ndCByZW1lbWJlcikgYW5kIDVCIChmdWxsIElEKSBhY2Nlc3NlcyB0aGF0IGFy ZSBwZXJmb3JtZWQuIFRoZXNlIGFyZQpub3QgMzItYml0IGFsaWduZWQuCgo+IAo+IFNpZ25lZC1v ZmYtYnk6IEJvcmlzIEJyZXppbGxvbiA8Ym9yaXMuYnJlemlsbG9uQGNvbGxhYm9yYS5jb20+Cj4g LS0tCj4gIGRyaXZlcnMvbXRkL25hbmQvcmF3L2NhZmVfbmFuZC5jIHwgMjcgKysrKysrKysrKysr KysrKysrKysrLS0tLS0tCj4gIDEgZmlsZSBjaGFuZ2VkLCAyMSBpbnNlcnRpb25zKCspLCA2IGRl bGV0aW9ucygtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL210ZC9uYW5kL3Jhdy9jYWZlX25h bmQuYyBiL2RyaXZlcnMvbXRkL25hbmQvcmF3L2NhZmVfbmFuZC5jCj4gaW5kZXggMjY0OTUwODVm Mjg1Li45NTVkYzc4YzU3YmUgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9tdGQvbmFuZC9yYXcvY2Fm ZV9uYW5kLmMKPiArKysgYi9kcml2ZXJzL210ZC9uYW5kL3Jhdy9jYWZlX25hbmQuYwo+IEBAIC0x ODQsMTAgKzE4NCwxOCBAQCBzdGF0aWMgdm9pZCBjYWZlX3dyaXRlX2J1ZihzdHJ1Y3QgbmFuZF9j aGlwICpjaGlwLCBjb25zdCB2b2lkICpidWYsCj4gIHsKPiAgCXN0cnVjdCBjYWZlX3ByaXYgKmNh ZmUgPSBuYW5kX2dldF9jb250cm9sbGVyX2RhdGEoY2hpcCk7Cj4gIAo+IC0JaWYgKGNhZmUtPnVz ZWRtYSkKPiArCWlmIChjYWZlLT51c2VkbWEpIHsKCkFyZSB5b3Ugc3VyZSB1c2VkbWEgd2lsbCBu b3QgYmUgdHJpZ2dlcmVkIGluIHRoZSBjYXNlIG9mIHVuYWxpZ25lZAphY2Nlc3Nlcz8gSSBkaWRu J3QgY2hlY2sgYnV0IGl0IGNvdWxkIGJlIG5pY2UgdG8gdmVyaWZ5IHRoYXQgdGhpcyBmbGFnCmlz IG9ubHkgc2V0IGJ5IHJlYWQvd3JpdGVfcGFnZSgpIGhlbHBlcnMgZm9yIGluc3RhbmNlICh3aGlj aCBvbmx5CmhhbmRsZSAzMi1iaXQgYWxpZ25lZCBkYXRhKS4KCj4gIAkJbWVtY3B5KGNhZmUtPmRt YWJ1ZiwgYnVmLCBsZW4pOwo+IC0JZWxzZQo+IC0JCW1lbWNweV90b2lvKGNhZmUtPm1taW8gKyBD QUZFX05BTkRfV1JJVEVfREFUQSwgYnVmLCBsZW4pOwo+ICsJfSBlbHNlIHsKPiArCQltZW1jcHlf dG9pbyhjYWZlLT5tbWlvICsgQ0FGRV9OQU5EX1dSSVRFX0RBVEEsIGJ1ZiwKPiArCQkJICAgIGxl biAmIH4weDMpOwo+ICsJCWlmIChsZW4gJiAweDMpIHsKPiArCQkJdTMyIHRtcCA9IDA7Cj4gKwo+ ICsJCQltZW1jcHkoJnRtcCwgYnVmICsgKGxlbiAmIH4weDMpLCBsZW4gJiAweDMpOwo+ICsJCQlj YWZlX3dyaXRlbChjYWZlLCB0bXAsIE5BTkRfV1JJVEVfREFUQSk7Cj4gKwkJfQo+ICsJfQo+ICAK PiAgCWRldl9kYmcoJmNhZmUtPnBkZXYtPmRldiwgIkNvcHkgMHgleCBieXRlcyB0byB3cml0ZSBi dWZmZXIuXG4iLAlsZW4pOwo+ICB9Cj4gQEAgLTE5NiwxMCArMjA0LDE3IEBAIHN0YXRpYyB2b2lk IGNhZmVfcmVhZF9idWYoc3RydWN0IG5hbmRfY2hpcCAqY2hpcCwgdm9pZCAqYnVmLCB1bnNpZ25l ZCBpbnQgbGVuKQo+ICB7Cj4gIAlzdHJ1Y3QgY2FmZV9wcml2ICpjYWZlID0gbmFuZF9nZXRfY29u dHJvbGxlcl9kYXRhKGNoaXApOwo+ICAKPiAtCWlmIChjYWZlLT51c2VkbWEpCj4gKwlpZiAoY2Fm ZS0+dXNlZG1hKSB7Cj4gIAkJbWVtY3B5KGJ1ZiwgY2FmZS0+ZG1hYnVmLCBsZW4pOwo+IC0JZWxz ZQo+IC0JCW1lbWNweV9mcm9taW8oYnVmLCBjYWZlLT5tbWlvICsgQ0FGRV9OQU5EX1JFQURfREFU QSwgbGVuKTsKPiArCX0gZWxzZSB7Cj4gKwkJbWVtY3B5X2Zyb21pbyhidWYsIGNhZmUtPm1taW8g KyBDQUZFX05BTkRfUkVBRF9EQVRBLAo+ICsJCQkgICAgICBsZW4gJiB+MHgzKTsKPiArCQlpZiAo bGVuICYgMHgzKSB7Cj4gKwkJCXUzMiB0bXAgPSBjYWZlX3JlYWRsKGNhZmUsIE5BTkRfUkVBRF9E QVRBKTsKPiArCj4gKwkJCW1lbWNweShidWYgKyAobGVuICYgfjB4MyksICZ0bXAsIGxlbiAmIDB4 Myk7Cj4gKwkJfQo+ICsJfQo+ICAKPiAgCWRldl9kYmcoJmNhZmUtPnBkZXYtPmRldiwgIkNvcHkg MHgleCBieXRlcyBmcm9tIHJlYWQgYnVmZmVyLlxuIiwgbGVuKTsKPiAgfQoKUmV2aWV3ZWQtYnk6 IE1pcXVlbCBSYXluYWwgPG1pcXVlbC5yYXluYWxAYm9vdGxpbi5jb20+CgpUaGFua3MsCk1pcXXD qGwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpMaW51eCBNVEQgZGlzY3Vzc2lvbiBtYWlsaW5nIGxpc3QKaHR0cDovL2xpc3RzLmluZnJhZGVh ZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1tdGQvCg==