From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from alexa-out.qualcomm.com ([129.46.98.28]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1eSPsV-0007jo-Po for ath10k@lists.infradead.org; Fri, 22 Dec 2017 16:08:57 +0000 From: Kalle Valo Subject: Re: [PATCH 03/11] ath10k_sdio: DMA bounce buffers for read write Date: Fri, 22 Dec 2017 16:08:40 +0000 Message-ID: <87lghu9247.fsf@kamboji.qca.qualcomm.com> References: <1506793068-27445-1-git-send-email-alagusankar@silex-india.com> <1506793068-27445-4-git-send-email-alagusankar@silex-india.com> In-Reply-To: <1506793068-27445-4-git-send-email-alagusankar@silex-india.com> (silexcommon@gmail.com's message of "Sat, 30 Sep 2017 23:07:40 +0530") Content-Language: en-US MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: "silexcommon@gmail.com" Cc: Alagu Sankar , "linux-wireless@vger.kernel.org" , "ath10k@lists.infradead.org" silexcommon@gmail.com writes: > From: Alagu Sankar > > Some SD host controllers still need bounce buffers for SDIO data > transfers. While the transfers worked fine on x86 platforms, > this is found to be required for i.MX6 based systems. > > Changes are similar to and derived from the ath6kl sdio driver. > > Signed-off-by: Alagu Sankar Why is the bounce buffer needed exactly, what are the symptoms etc? To me this sounds like an ugly workaround for a SDIO controller driver bug. -- Kalle Valo _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k