Re: [PATCH 09/22] usb: cdns3: Don't use GFP_DMA when calling dma_alloc_coherent()

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To: Baoquan He <bhe@xxxxxxxxxx>
Subject: Re: [PATCH 09/22] usb: cdns3: Don't use GFP_DMA when calling dma_alloc_coherent()
From: Christoph Hellwig <hch@xxxxxx>
Date: Sat, 19 Feb 2022 08:09:23 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, hch@xxxxxx, cl@xxxxxxxxx, 42.hyeyoo@xxxxxxxxx, penberg@xxxxxxxxxx, rientjes@xxxxxxxxxx, iamjoonsoo.kim@xxxxxxx, vbabka@xxxxxxx, David.Laight@xxxxxxxxxx, david@xxxxxxxxxx, herbert@xxxxxxxxxxxxxxxxxxx, davem@xxxxxxxxxxxxx, linux-crypto@xxxxxxxxxxxxxxx, steffen.klassert@xxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, hca@xxxxxxxxxxxxx, gor@xxxxxxxxxxxxx, agordeev@xxxxxxxxxxxxx, borntraeger@xxxxxxxxxxxxx, svens@xxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, michael@xxxxxxxx, linux-i2c@xxxxxxxxxxxxxxx, wsa@xxxxxxxxxx
In-reply-to: <20220219005221.634-10-bhe@redhat.com>
References: <20220219005221.634-1-bhe@redhat.com> <20220219005221.634-10-bhe@redhat.com>
User-agent: Mutt/1.5.17 (2007-11-01)

On Sat, Feb 19, 2022 at 08:52:08AM +0800, Baoquan He wrote:
> dma_alloc_coherent() allocates dma buffer with device's addressing
> limitation in mind. It's redundent to specify GFP_DMA when calling
> dma_alloc_coherent(). replace it with GFP_KERNEL.

Plase avoid the overly long line. The rest looks good.

References:
- [PATCH 00/22] Don't use kmalloc() with GFP_DMA
  - From: Baoquan He
- [PATCH 09/22] usb: cdns3: Don't use GFP_DMA when calling dma_alloc_coherent()
  - From: Baoquan He

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