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Mon, 25 Jan 2021 08:53:37 +0000 Received: from relay6-d.mail.gandi.net ([217.70.183.198]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l3xcs-00051M-K3 for linux-mtd@lists.infradead.org; Mon, 25 Jan 2021 08:53:35 +0000 X-Originating-IP: 86.201.233.230 Received: from xps13 (lfbn-tou-1-151-230.w86-201.abo.wanadoo.fr [86.201.233.230]) (Authenticated sender: miquel.raynal@bootlin.com) by relay6-d.mail.gandi.net (Postfix) with ESMTPSA id 486B3C0013; Mon, 25 Jan 2021 08:53:31 +0000 (UTC) Date: Mon, 25 Jan 2021 09:53:31 +0100 From: Miquel Raynal To: yangerkun Subject: Re: [PATCH] mtd: phram: use div_u64_rem to stop overwrite len in phram_setup Message-ID: <20210125095331.2abf626e@xps13> In-Reply-To: <527f4357-16a6-2561-81c2-20127eabd68c@huawei.com> References: <20210104101830.3036-1-miquel.raynal@bootlin.com> <01746715-84dc-cd7a-508a-52ba3172e339@huawei.com> <20210125092852.504f082f@xps13> <527f4357-16a6-2561-81c2-20127eabd68c@huawei.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-20210125_035334_791485_E089EC1A X-CRM114-Status: GOOD ( 17.67 ) 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: patrick@baymotion.com, zhongguohua1@huawei.com, joern@lazybastard.org, linux-mtd@lists.infradead.org, richard@nod.at 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 SGVsbG8sCgp5YW5nZXJrdW4gPHlhbmdlcmt1bkBodWF3ZWkuY29tPiB3cm90ZSBvbiBNb24sIDI1 IEphbiAyMDIxIDE2OjM2OjUwCiswODAwOgoKPiDlnKggMjAyMS8xLzI1IDE2OjI4LCBNaXF1ZWwg UmF5bmFsIOWGmemBkzoKPiA+IEhpIHlhbmdlcmt1biwKPiA+IAo+ID4geWFuZ2Vya3VuIDx5YW5n ZXJrdW5AaHVhd2VpLmNvbT4gd3JvdGUgb24gTW9uLCAyNSBKYW4gMjAyMSAxMzo0ODozMgo+ID4g KzA4MDA6Cj4gPiAgIAo+ID4+IEhpLAo+ID4+Cj4gPj4gUmVjaGVjayB0aGUgcGF0Y2gsIGFuZCBp dCBzZWVtcyB3ZSBuZWVkIGNoZWNrIGVyYXNlc2l6ZSB0byBwcmV2ZW50IERJVi8wLi4uICAKPiA+ IAo+ID4gQ2FuIHlvdSBlbGFib3JhdGUgYSBsaXR0bGUgYml0Pwo+ID4gCj4gPiBUaGUgZG9fZGl2 KCkgIT0gMCBoYXMgYmVlbiByZXBsYWNlZCBieSB0aGUgJ3JlbScgY29uZGl0aW9uIGFuZCBpdCBz ZWVtcwo+ID4gZ29vZCB0byBtZS4gU28gcGxlYXNlIHRlbGwgbWUgd2hhdCBkaXZpc2lvbiBieSB6 ZXJvIHlvdSBhcmUgdGFsa2luZwo+ID4gYWJvdXQgYmVjYXVzZSB0aGUgYmVnaW5uaW5nIG9mIHRo ZSBpZiBjb25kaXRpb24gaXMgImxlbiA9PSAwIHx8Cj4gPiBlcmFzZXNpemUgPT0gMCB8fCBlcmFz ZXNpemUgPiBsZW4iLCBzbyBpdCBkb2VzIGFscmVhZHkgdGFrZSBjYXJlIG9mCj4gPiB0aGlzIHNp dHVhdGlvbi4gIAo+IAo+IFRoZSBwYXRjaCBJIHNlbmQgc2hvdyBhcyBmb2xsb3c6Cj4gCj4gLS0t IGEvZHJpdmVycy9tdGQvZGV2aWNlcy9waHJhbS5jCj4gKysrIGIvZHJpdmVycy9tdGQvZGV2aWNl cy9waHJhbS5jCj4gQEAgLTIyMiw2ICsyMjIsNyBAQCBzdGF0aWMgaW50IHBocmFtX3NldHVwKGNv bnN0IGNoYXIgKnZhbCkKPiAgIAl1aW50NjRfdCBzdGFydDsKPiAgIAl1aW50NjRfdCBsZW47Cj4g ICAJdWludDY0X3QgZXJhc2VzaXplID0gUEFHRV9TSVpFOwo+ICsJdWludDMyX3QgcmVtOwo+ICAg CWludCBpLCByZXQ7Cj4gCj4gICAJaWYgKHN0cm5sZW4odmFsLCBzaXplb2YoYnVmKSkgPj0gc2l6 ZW9mKGJ1ZikpCj4gQEAgLTI2Myw4ICsyNjQsOSBAQCBzdGF0aWMgaW50IHBocmFtX3NldHVwKGNv bnN0IGNoYXIgKnZhbCkKPiAgIAkJfQo+ICAgCX0KPiAKPiArCWRpdl91NjRfcmVtKGxlbiwgKHVp bnQzMl90KWVyYXNlc2l6ZSwgJnJlbSk7Cj4gICAgICAgICAgXl5eXl5eXl5eXl5eXl5eXl5eXl5e Xl5eXl5eXl5eXl5eXl5eXl5eXl5eXl4KCk9oIHJpZ2h0IHRoaXMgaGFzIGJlZW4gbW92ZWQgYmVm b3JlIHRoZSBjaGVja3MsIHBsZWFzZSBzZW5kIGEgdjIgdGhlbi4KCj4gCU9uY2UgdXNlciBzZXQg ZXJhc2VzaXplID09IDAsIHRoZSBkaXZfdTY0X3JlbSB3aWxsIHRyaWdnZXIgdGhlCj4gRElWLzAu Li4KPiAKPiAgIAlpZiAobGVuID09IDAgfHwgZXJhc2VzaXplID09IDAgfHwgZXJhc2VzaXplID4g bGVuCj4gLQkgICAgfHwgZXJhc2VzaXplID4gVUlOVF9NQVggfHwgZG9fZGl2KGxlbiwgKHVpbnQz Ml90KWVyYXNlc2l6ZSkgIT0gMCkgewo+ICsJICAgIHx8IGVyYXNlc2l6ZSA+IFVJTlRfTUFYIHx8 IHJlbSkgewo+ICAgCQlwYXJzZV9lcnIoImlsbGVnYWwgZXJhc2VzaXplIG9yIGxlblxuIik7Cj4g ICAJCWdvdG8gZXJyb3I7Cj4gICAJfQoKVGhhbmtzLApNaXF1w6hsCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXggTVREIGRpc2N1c3Np b24gbWFpbGluZyBsaXN0Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtbXRkLwo=