From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 604D7CE7A81 for ; Mon, 25 Sep 2023 08:49:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oiJOP5F+SIwEZJckiK3NvEP2CBv+KW/NgffMoWj+jtk=; b=3oS0WQXDyVvv4a u5vo8tO/IyiXTn3US7TVUVtS4Cj+ZRix1EvOqMIl77JnP0+q1xG65ut70TUUIMlRn0pBDs5AiGVLA GvcTNT1q3KN0vhhVKeTse9xisb/+ymmzQLqhLgqUZ7GPr67TvG+CO4AIfRnLViVAO1kogADFyi+gu EYNpEASB2LujKGLdtveQO2ue9n3K+yOeafcW5ViPt19bKnqrqiP/pAKntbSCYy04a11EsTt4UPyrw 3BwRbBoDVUvKr7sKb+NtjUsFjaWmoTtzprHjvUh/ePF6LHcGFussaJxE9ukLJaFYQttBLOCg5lyF9 8dEJl5m09FDsbJUwyi6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qkhHp-00Dly9-2t; Mon, 25 Sep 2023 08:49:49 +0000 Received: from relay9-d.mail.gandi.net ([2001:4b98:dc4:8::229]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qkhHm-00Dlx2-1g for linux-mtd@lists.infradead.org; Mon, 25 Sep 2023 08:49:48 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id 19B2CFF803; Mon, 25 Sep 2023 08:49:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1695631782; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=INBNCslwxKAO9zA0oLb6M4ySYAmug40tgKE1H/MmE0A=; b=TYej/Qhs2tQt0X2X/1RpcZsO4PzpvkrHD6BxUtce/kqEyax4ZxRj1S/sEYcWjqB0CO7TOK HwaElyLLqzCZdL56EkdOOuZy6SXYGOEK7VBY9yirkxT/jTHZdITbC7qWW9+K1T9RHH3PMY JsKw3fQpnhmU+Xi8dCW88Y/WNNrhqDjfBoyZiz9uJtT04NQiy3CvxGZo3g9QC9utv3rz26 grC+poafNhzfdTSS1R2PAgHR3MPF/KLR++jSqhXpz+P9tjBLbQLmhAJZtg7fznHcedhviv yQzPzPnn6QubeEZoxgSR9rRNwUqgUaHQ5DkaCsZHYycaOk1f1VBRO/ouHIH81Q== Date: Mon, 25 Sep 2023 10:49:38 +0200 From: Miquel Raynal To: ZhaoLong Wang Cc: , , , , , , Subject: Re: [RFC] mtd: Fix error code loss in mtdchar_read() function. Message-ID: <20230925104938.3f7b4284@xps-13> In-Reply-To: <20230923005856.2538223-1-wangzhaolong1@huawei.com> References: <20230923005856.2538223-1-wangzhaolong1@huawei.com> Organization: Bootlin X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-GND-Sasl: miquel.raynal@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230925_014946_996248_B2198BD1 X-CRM114-Status: GOOD ( 22.92 ) 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 SGVsbG8sCgpSaWNoYXJkLCB5b3VyIGFkdmljZSBpcyB3ZWxjb21lIGhlcmUuCgp3YW5nemhhb2xv bmcxQGh1YXdlaS5jb20gd3JvdGUgb24gU2F0LCAyMyBTZXAgMjAyMyAwODo1ODo1NiArMDgwMDoK Cj4gSW4gdGhlIGZpcnN0IHdoaWxlIGxvb3AsIGlmIHRoZSBtdGRfcmVhZCgpIGZ1bmN0aW9uIHJl dHVybnMgLUVCQURNU0cKCgkJCSAgICAgIHMvdGhlLy8JICAgICBzL2Z1bmN0aW9uLy8KCQkJICAg ICAgLAoKPiBhbmQgJ3JldGxlbicgcmV0dXJucyAwLCB0aGUgbG9vcCBicmVhayBhbmQgdGhlIGZ1 bmN0aW9uIHJldHVybnMgdmFsdWUKCnMvYW5kLy8JCXJlbWFpbnMgdG8gMC4gVGhlIGxvb3AgYnJl YWtzIGFuZCB0aGUgZnVuY3Rpb24KcmV0dXJucyAndG90YWxfcmV0bGVuJyB3aGljaCBpcyAwIGlu c3RlYWQgb2YgdGhlIGVycm9yIGNvZGUuCgo+ICd0b3RhbF9yZXRsZW4nIGlzIDAsIG5vdCB0aGUg ZXJyb3IgY29kZS4KCkFjdHVhbGx5IGFmdGVyIGxvb2tpbmcgYXQgdGhlIGNvZGUsIEkgaGF2ZSBu byBzdHJvbmcgb3BpbmlvbgpyZWdhcmRpbmcgd2hldGhlciB3ZSBzaG91bGQgcmV0dXJuIDAgb3Ig YW4gZXJyb3IgY29kZSBpbiB0aGlzIGNhc2UuIAoKVGhlcmUgaXMgdGhpcyBjb21tZW50IHJpZ2h0 IGFib3ZlLCBhbmQgSSdtIG5vdCBzdXJlIGl0IGlzIHN0aWxsIHVwIHRvCmRhdGUgYmVjYXVzZSBJ IGJlbGlldmUgbWFueSBkcml2ZXJzIGp1c3QgZG9uJ3QgcHJvdmlkZSB0aGUgZGF0YSB1cG9uCkVD QyBlcnJvcjoKCiAgICAgICAgICAgICAgICAvKiBOYW5kIHJldHVybnMgLUVCQURNU0cgb24gRUND IGVycm9ycywgYnV0IGl0IHJldHVybnMKICAgICAgICAgICAgICAgICAqIHRoZSBkYXRhLiBGb3Ig b3VyIHVzZXJzcGFjZSB0b29scyBpdCBpcyBpbXBvcnRhbnQKICAgICAgICAgICAgICAgICAqIHRv IGR1bXAgYXJlYXMgd2l0aCBFQ0MgZXJyb3JzIQogICAgICAgICAgICAgICAgICogRm9yIGtlcm5l bCBpbnRlcm5hbCB1c2FnZSBpdCBhbHNvIG1pZ2h0IHJldHVybiAtRVVDTEVBTgogICAgICAgICAg ICAgICAgICogdG8gc2lnbmFsIHRoZSBjYWxsZXIgdGhhdCBhIGJpdGZsaXAgaGFzIG9jY3VycmVk IGFuZCBoYXMKICAgICAgICAgICAgICAgICAqIGJlZW4gY29ycmVjdGVkIGJ5IHRoZSBFQ0MgYWxn b3JpdGhtLgogICAgICAgICAgICAgICAgICogVXNlcnNwYWNlIHNvZnR3YXJlIHdoaWNoIGFjY2Vz c2VzIE5BTkQgdGhpcyB3YXkKICAgICAgICAgICAgICAgICAqIG11c3QgYmUgYXdhcmUgb2YgdGhl IGZhY3QgdGhhdCBpdCBkZWFscyB3aXRoIE5BTkQKICAgICAgICAgICAgICAgICAqLwoKPiBUaGlz IHByb2JsZW0gY2F1c2VzIHRoZSB1c2VyLXNwYWNlIHByb2dyYW0gdG8gZW5jb3VudGVyIEVPRiB3 aGVuIGl0IGhhcwo+IG5vdCBmaW5pc2hlZCByZWFkaW5nIHRoZSBtdGQgcGFydGlvbiwgYW5kIHRo aXMgYWxzbyB2aW9sYXRlcyB0aGUgcmVhZAo+IHN5c3RlbSBjYWxsIHN0YW5kYXJkIGluIFBPU0lY Lgo+IAo+IExpbms6IGh0dHBzOi8vYnVnemlsbGEua2VybmVsLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9 MjE3OTM5Cj4gU2lnbmVkLW9mZi1ieTogWmhhb0xvbmcgV2FuZyA8d2FuZ3poYW9sb25nMUBodWF3 ZWkuY29tPgo+IC0tLQo+ICBkcml2ZXJzL210ZC9tdGRjaGFyLmMgfCAyICstCj4gIDEgZmlsZSBj aGFuZ2VkLCAxIGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQo+IAo+IGRpZmYgLS1naXQgYS9k cml2ZXJzL210ZC9tdGRjaGFyLmMgYi9kcml2ZXJzL210ZC9tdGRjaGFyLmMKPiBpbmRleCA4ZGM0 ZjVjNDkzZmMuLmJhNjBkYzZiZWY5OCAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL210ZC9tdGRjaGFy LmMKPiArKysgYi9kcml2ZXJzL210ZC9tdGRjaGFyLmMKPiBAQCAtMjExLDcgKzIxMSw3IEBAIHN0 YXRpYyBzc2l6ZV90IG10ZGNoYXJfcmVhZChzdHJ1Y3QgZmlsZSAqZmlsZSwgY2hhciBfX3VzZXIg KmJ1Ziwgc2l6ZV90IGNvdW50LAo+ICAJfQo+ICAKPiAgCWtmcmVlKGtidWYpOwo+IC0JcmV0dXJu IHRvdGFsX3JldGxlbjsKPiArCXJldHVybiB0b3RhbF9yZXRsZW4gPyB0b3RhbF9yZXRsZW4gOiBy ZXQ7CgpUaGlzIGlzIGtpbmQgb2Ygd3JvbmcsIGlmIHJldCBpcyAwIHRoZW4geW91IHJldHVybiBy ZXQgd2hpbGUgeW91IHNob3VsZApyZXR1cm4gdG90YWxfcmV0bGVuLiBJbiBwcmFjdGljZSBpdCBk b2VzIG5vdCByZWFsbHkgbWF0dGVyLCB0aGUgcmVzdWx0CmlzIHRoZSBzYW1lLCBidXQgaXQgbWFr ZXMgaXQgaGFyZGVyIHRvIHVuZGVyc3RhbmQgdGhlIGNvZGUgSU1ITy4KCj4gIH0gLyogbXRkY2hh cl9yZWFkICovCj4gIAo+ICBzdGF0aWMgc3NpemVfdCBtdGRjaGFyX3dyaXRlKHN0cnVjdCBmaWxl ICpmaWxlLCBjb25zdCBjaGFyIF9fdXNlciAqYnVmLCBzaXplX3QgY291bnQsCgoKVGhhbmtzLApN aXF1w6hsCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KTGludXggTVREIGRpc2N1c3Npb24gbWFpbGluZyBsaXN0Cmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbXRkLwo=