From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: Revert "dmaengine: pl330: add DMA_PAUSE feature" From: Vinod Koul Message-Id: <20180529070915.GF5666@vkoul-mobl> Date: Tue, 29 May 2018 12:39:15 +0530 To: Marek Szyprowski Cc: Frank Mori Hess , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Dan Williams , r.baldyga@hackerion.com, Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Linux Samsung SOC List-ID: T24gMjktMDUtMTgsIDA3OjE3LCBNYXJlayBTenlwcm93c2tpIHdyb3RlOgo+IEhpIFZpbm9kLAo+ IAo+IE9uIDIwMTgtMDUtMTggMDk6MjEsIFZpbm9kIHdyb3RlOgo+ID4gT24gMTgtMDUtMTgsIDA4 OjI4LCBNYXJlayBTenlwcm93c2tpIHdyb3RlOgo+ID4+IEhpIFZpbm9kLAo+ID4+Cj4gPj4gT2th eSwgSSBzZWUgdGhhdCBpbiB0aGVvcnksIHRoZXJlIGFyZSBzb21lIHRyaWNreSBiaXRzIGluIGlt cGxlbWVudGluZyBETUEKPiA+PiBzdXBwb3J0IGluIFVBUlQgZHJpdmVycy4gT24gdGhlIG90aGVy IGhhbmQgdGhlcmUgYXJlIGFscmVhZHkgZHJpdmVycwo+ID4+IHdpdGggc2VlbXMKPiA+PiB0byBi ZSB3b3JraW5nIGZpbmUuIFRoaXMgZGlzY3Vzc2lvbiBpcyBhYm91dCByZXZlcnQgb2YgdGhlIGZl YXR1cmUKPiA+PiBwcmVzZW50IGluCj4gPj4gcGwzMzAgZHJpdmVyLCB3aGljaCBpcyByZXF1aXJl ZCBieSBvdGhlciBpbi1rZXJuZWwgZHJpdmVyIHdpdGhvdXQgcHJvcGVyCj4gPj4gZml4IHRvCj4g Pj4gdGhlbS4KPiA+Pgo+ID4+IENhbiB3ZSBkcm9wIGl0IGZvciBub3cgYW5kIGRpc2N1c3Mgd2hh dCBhbmQgaG93IHNob3VsZCBiZSBpbXBsZW1lbnRlZCB0bwo+ID4+IG1ha2UKPiA+PiBldmVyeW9u ZSBoYXBweSwgd2l0aG91dCBhbnkgcmVncmVzc2lvbnM/Cj4gPiBTdXJlIGFtIGRyb3BwaW5nIHRo ZSByZXZlcnQsIHdlIGNhbiBhbHdheXMgYnJpbmcgaXQgYmFjayBpZiBpdCBpcyByZXF1aXJlZAo+ IAo+IFRoaXMgcmV2ZXJ0IGlzIHN0aWxsIGluIHlvdXIgLW5leHQgYnJhbmNoLiBEbyB5b3UgcGxh biB0byB1cGRhdGUgaXQgYXMgd2VsbD8KCkkgZG9udCBzZW5kIGl0IHRvIGxpbnVzIGFuZCBtZXJn ZSB0b3BpYy8qIGludG8gZm9yLWxpbnVzIGFuZCBzZW5kLiBJdCBnZXRzCnVwZGF0ZWQgb24gcmVi YXNlIG9uIC1yYzEuCg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Subject: Re: Revert "dmaengine: pl330: add DMA_PAUSE feature" Date: Tue, 29 May 2018 12:39:15 +0530 Message-ID: <20180529070915.GF5666@vkoul-mobl> References: <06f54061-c537-b399-e493-ec2cdf4def5d@samsung.com> <20180515062144.GC13271@vkoul-mobl> <20180517041946.GQ13271@vkoul-mobl> <20180518040349.GB2932@vkoul-mobl> <7f0b7404-ee12-977f-02a4-a463d1873aee@samsung.com> <20180518072112.GG2932@vkoul-mobl> <20180529051745eucas1p2ee6ec3e34f075d255c87f8f54a626784~zBcpaqmAb1928519285eucas1p2H@eucas1p2.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180529051745eucas1p2ee6ec3e34f075d255c87f8f54a626784~zBcpaqmAb1928519285eucas1p2H@eucas1p2.samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Marek Szyprowski Cc: Frank Mori Hess , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Dan Williams , r.baldyga@hackerion.com, Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Linux Samsung SOC List-Id: linux-samsung-soc@vger.kernel.org On 29-05-18, 07:17, Marek Szyprowski wrote: > Hi Vinod, > > On 2018-05-18 09:21, Vinod wrote: > > On 18-05-18, 08:28, Marek Szyprowski wrote: > >> Hi Vinod, > >> > >> Okay, I see that in theory, there are some tricky bits in implementing DMA > >> support in UART drivers. On the other hand there are already drivers > >> with seems > >> to be working fine. This discussion is about revert of the feature > >> present in > >> pl330 driver, which is required by other in-kernel driver without proper > >> fix to > >> them. > >> > >> Can we drop it for now and discuss what and how should be implemented to > >> make > >> everyone happy, without any regressions? > > Sure am dropping the revert, we can always bring it back if it is required > > This revert is still in your -next branch. Do you plan to update it as well? I dont send it to linus and merge topic/* into for-linus and send. It gets updated on rebase on -rc1. -- ~Vinod