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Mon, 5 Mar 2018 15:07:49 -0500 Received: from mail-bl2nam02on0110.outbound.protection.outlook.com ([104.47.38.110]:27570 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751764AbeCEUHs (ORCPT ); Mon, 5 Mar 2018 15:07:48 -0500 From: Sasha Levin To: Mark Brown CC: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" , Jonas Gorski Subject: Re: [PATCH AUTOSEL for 4.9 002/219] spi/bcm63xx: make spi subsystem aware of message size limits Thread-Topic: [PATCH AUTOSEL for 4.9 002/219] spi/bcm63xx: make spi subsystem aware of message size limits Thread-Index: AQHTsz7gbxq43L/790e5qAZ18oup4aPBcW0AgACjVAA= Date: Mon, 5 Mar 2018 20:07:46 +0000 Message-ID: <20180305200744.afw64js6wnmyfqrb@sasha-lappy> References: <20180303222716.26640-1-alexander.levin@microsoft.com> <20180303222716.26640-2-alexander.levin@microsoft.com> <20180305102310.GC8588@sirena.org.uk> In-Reply-To: <20180305102310.GC8588@sirena.org.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0726;20:Kdr7/P4HJZ5IxkbX3OTcLG0UqIcUkJXSnikwZidAsQIudwmCogOEgDXnHq4d4rKcgIpXmAsSC1lsWZQEo181YBQOnLBFJwz7h19/1P8vZTmvajGUosiat9ulqkWral2gfKGF4AdKQ8xX2hZ5tAdK7Sqil2DFo+7ixH4uxgZocZA= x-ms-exchange-antispam-srfa-diagnostics: SOS; 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charset="us-ascii" Content-ID: <1CE15D163C562B43877A4632DE99261E@namprd21.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: d2a12812-b87c-48c9-1c35-08d582d4c355 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Mar 2018 20:07:46.3284 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0726 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Mon, Mar 05, 2018 at 10:23:10AM +0000, Mark Brown wrote: >On Sat, Mar 03, 2018 at 10:27:56PM +0000, Sasha Levin wrote: >> From: Jonas Gorski >> >> [ Upstream commit 0135c03df914f0481c61f097c78d37cece84f330 ] > >Why are there so many more patches for v4.9 than for more recent >kernels? The v4.11..v4.14 range got processed, and all those commits are now being pushed into 4.9 and older. >> The bcm63xx SPI controller does not allow manual control of the CS >> lines and will toggle it automatically before and after sending data, >> so we are limited to messages that fit in the FIFO buffer. Since the CS >> lines aren't available as GPIOs either, we will need to make slave >> drivers aware of this limitation so they can handle them accordingly. > >This seems really aggressive for stable... Why so? --=20 Thanks, Sasha=