linux-kernel - Re: [PATCH v2] usb: gadget: aspeed_udc: Add check for dma_alloc

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Date:   Tue, 13 Dec 2022 15:32:23 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Jiasheng Jiang <jiasheng@...as.ac.cn>
Cc:     neal_liu@...eedtech.com, joel@....id.au, andrew@...id.au,
        sumit.semwal@...aro.org, christian.koenig@....com,
        linux-aspeed@...ts.ozlabs.org, linux-usb@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH v2] usb: gadget: aspeed_udc: Add check for
 dma_alloc_coherent

On Tue, Dec 13, 2022 at 08:21:16PM +0800, Jiasheng Jiang wrote:
> Add the check for the return value of dma_alloc_coherent
> in order to avoid NULL pointer dereference.
> 
> Fixes: 055276c13205 ("usb: gadget: add Aspeed ast2600 udc driver")
> Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>

Again, please prove that you tested this and follow the requirements at:
	Documentation/process/researcher-guidelines.rst
in order for us to be able to accept your changes.

thanks,

greg k-h