From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailout2.samsung.com (mailout2.samsung.com [203.254.224.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 154C63D0A4 for ; Fri, 29 Mar 2024 05:53:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.254.224.25 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711691638; cv=none; b=eGGBU846Gm+cMwWiH+ifI1j29FPfNVZU8jykjEz9rMUhscjqmjPdkLDv0oEtwIBQtdb2N9PXhHGZ9fxyUpfmHsBwkPSqSwY/n0bIa1vscznDan25zINscsKdkodhXSPAKB42g9c+aZmRaNVRwC5FfW+YjbY/NM3K4blTuM2xJgU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711691638; c=relaxed/simple; bh=g2SnQTkcDJ4MHL5Cu1+rfTDJOSFbJDjPk0W0xUDtBKI=; h=Message-ID:Date:MIME-Version:From:Subject:To:Cc:In-Reply-To: Content-Type:References; b=qKJRY6/CdXBkbUdk6UbH/1VI9V08ENoP7JEzeknanpa6VH7Z3ngMfUI5Gunj0SX3FI1M2alhrKdPWnd3+gCHekAAHnYptqye+Qwkj4C8WjnJ4ARfnyiw4+eOwW5qaL1aJ0lkWPtxbJPKFnG2oTXG3G8YtpoD8ABUgU5MSqKW9Aw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=VyOdHSFG; arc=none smtp.client-ip=203.254.224.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="VyOdHSFG" Received: from epcas2p2.samsung.com (unknown [182.195.41.54]) by mailout2.samsung.com (KnoxPortal) with ESMTP id 20240329055348epoutp02ccceb4ae62190b6abc45f826acb91ab6~BJnelDtwy2216522165epoutp02Q for ; Fri, 29 Mar 2024 05:53:48 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20240329055348epoutp02ccceb4ae62190b6abc45f826acb91ab6~BJnelDtwy2216522165epoutp02Q DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1711691628; bh=PQUcA7QC3xHCPhhP5+dYZWwWhUzQV3dMsOt9Dcqdz4s=; h=Date:From:Subject:To:Cc:In-Reply-To:References:From; b=VyOdHSFGAb9tYw7AWiyJ1lE6o4HiixfSqoAL6soPNFDHSmw8J26DL8JabPakpvcd/ FQiTTHIa/aggv8ZDV1H8GtZHDxwlE1vM7pOkwHbHXCaf+7ooaf/5I8JLQaNTx4/SBO El6mvSm11+SaN6K4dAdbrDLdjMZXwOexTUgTmnRI= Received: from epsnrtp3.localdomain (unknown [182.195.42.164]) by epcas2p1.samsung.com (KnoxPortal) with ESMTP id 20240329055347epcas2p1fd2a6e7ac8451f541dc34651cd3bd209~BJndpBAsM2188521885epcas2p1L; Fri, 29 Mar 2024 05:53:47 +0000 (GMT) Received: from epsmges2p1.samsung.com (unknown [182.195.36.102]) by epsnrtp3.localdomain (Postfix) with ESMTP id 4V5V2f6mlqz4x9QH; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) Received: from epcas2p4.samsung.com ( [182.195.41.56]) by epsmges2p1.samsung.com (Symantec Messaging Gateway) with SMTP id 9C.8B.09673.A6756066; Fri, 29 Mar 2024 14:53:46 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas2p4.samsung.com (KnoxPortal) with ESMTPA id 20240329055346epcas2p43987f15b85181ea5dafeb9c0883c224e~BJnclOo-q0505505055epcas2p4e; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20240329055346epsmtrp215863283d5d0f39bb922a9814050280f~BJncjJ6pV0600906009epsmtrp2M; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) X-AuditID: b6c32a45-0aecca80000025c9-64-6606576a3469 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 40.96.08924.A6756066; Fri, 29 Mar 2024 14:53:46 +0900 (KST) Received: from [10.229.18.66] (unknown [10.229.18.66]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20240329055346epsmtip23c40f90f2bc7ab907c62bc1c9effd8d4~BJncSQ9ev1495514955epsmtip2o; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) Message-ID: <63355869-e679-7226-7719-36b62169db7e@samsung.com> Date: Fri, 29 Mar 2024 14:53:36 +0900 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 From: Jaewon Kim Subject: Re: [PATCH] spi: s3c64xx: Use DMA mode from fifo size To: Sam Protsenko Cc: Andi Shyti , Mark Brown , Krzysztof Kozlowski , Alim Akhtar , linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Content-Language: en-US In-Reply-To: Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrIJsWRmVeSWpSXmKPExsWy7bCmhW5WOFuawZ5ZhhYP5m1js7j/tYPR YurDJ2wWe19vZbfY9Pgaq8XlXXPYLGac38dk0fjxJrvF8759TA6cHptWdbJ53Lm2h81j85J6 j74tqxg9Pm+SC2CNyrbJSE1MSS1SSM1Lzk/JzEu3VfIOjneONzUzMNQ1tLQwV1LIS8xNtVVy 8QnQdcvMAbpHSaEsMacUKBSQWFyspG9nU5RfWpKqkJFfXGKrlFqQklNgXqBXnJhbXJqXrpeX WmJlaGBgZApUmJCdMXfjfaaCx7IVxxacZW5gXCHWxcjJISFgItGz4i9jFyMXh5DADkaJY28n MUE4nxglHm++wQLhfGOU2NLwgh2m5dGDOVAtexklXt54wgzhvGaUWHf5LDNIFa+AncTPSXNZ QWwWAVWJN393MkLEBSVOznzCAmKLCkRLtC67zwZiswloS3xfvxisXhiod+KOJ2D1IgJ6Eutm vmIHWcAssI5J4tnEq0wgCWYBcYlbT+aD2ZwCgRL3V56CistLNG+dDXaRhMBMDontLxtZIe52 keje94ENwhaWeHV8C9Q/UhKf3+2FiudLtF05AxWvkdi44BIjhG0vsejMT6A4B9ACTYn1u/RB TAkBZYkjt1gg1vJJdBz+yw4R5pXoaBOCaFSTuD/1HNRwGYlJR1YyQdgeEi2NU5kmMCrOQgqV WUgem4XkmVkIexcwsqxiFEstKM5NTy02KjCEx3Zyfu4mRnBa1XLdwTj57Qe9Q4xMHIyHGCU4 mJVEeHceZUkT4k1JrKxKLcqPLyrNSS0+xGgKjJuJzFKiyfnAxJ5XEm9oYmlgYmZmaG5kamCu JM57r3VuipBAemJJanZqakFqEUwfEwenVAPTrpa1uldXs004kfqvLdroaJTaxXeflK9eElzW mpmn8fYE+/Z8kUMrLOeFFR41qDnxdtXsqWv3SvoUxZ+5fL/j54Yfe7rTzFy+296T6A9k4st+ rRbMln1SM43XJvrtQv0l4S4KLXVsex8r+bulTq6d/1e1+Ur1KwuV+4cO5i2Yc197/kvTP+1X s+Yd3eZaqbYxZMvptLUfox6dP5LXvdwlde/F7/qyy94HLvia8Wjh69lz/t/kyC7WdpdtWqoS NjvP2kuicp2Ab/DSmblCYod4jgZOaVl0zCAyp/Q4q1THVC/ruSXHslh3eMXLKvqvWTPNzXjT 99D73ErybTHnNF58l8lvXu+1ynZtvvqd//ZPlViKMxINtZiLihMBmrbMTzQEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpikeLIzCtJLcpLzFFi42LZdlhJXjcrnC3N4OM6SYsH87axWdz/2sFo MfXhEzaLva+3sltsenyN1eLyrjlsFjPO72OyaPx4k93ied8+JgdOj02rOtk87lzbw+axeUm9 R9+WVYwenzfJBbBGcdmkpOZklqUW6dslcGXM3XifqeCxbMWxBWeZGxhXiHUxcnJICJhIPHow h7GLkYtDSGA3o8S/C8fYIRIyEsuf9bFB2MIS91uOsEIUvWSUePZ/OxNIglfATuLnpLmsIDaL gKrEm787GSHighInZz5hAbFFBaIlVn++AFbDJqAt8X39YjBbGKh34o4nYPUiAnoS62a+YgdZ wCywjkli5vJd7BDbbjBKLL76HuwMZgFxiVtP5oNt5hQIlLi/8hQTRNxMomtrFyOELS/RvHU2 8wRGoVlIDpmFpH0WkpZZSFoWMLKsYpRMLSjOTc8tNiwwzEst1ytOzC0uzUvXS87P3cQIjiYt zR2M21d90DvEyMTBeIhRgoNZSYR351GWNCHelMTKqtSi/Pii0pzU4kOM0hwsSuK84i96U4QE 0hNLUrNTUwtSi2CyTBycUg1MDXZeOzkvNvGwTvZMuc0nqGNb5CfEYvTnyjPhqHNfDiv7TJ6f z2owj7G00F5NbdfCFtanfr9KWpJfPL2Us3PmGqGcRZmxIa4akft5uP+r7M851jTF8WdNxMNX jHX69YXq06ckyjp0flxX/9/DU+245xrpAr3kWO7SbX6KFQkna5Zxp/QJXjxxtPptow73rqoS z/DWGQ07ussFJ+9lUNxXeK/++5Ff6SY75aeYBL5a2/T/RdT8Qo+k9KA5W18dmcS4LnwHA0MY N8sz68MN+eaLL0889Sf8t2+g7/xr6UXJwpP37Hki4h9R8E+C6Rvn6cRFfr4daalfSz5leMRu qZ1/s6ChQvnwShHOR38LViixFGckGmoxFxUnAgBJSJplFQMAAA== X-CMS-MailID: 20240329055346epcas2p43987f15b85181ea5dafeb9c0883c224e X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240327033501epcas2p2bbe21301da5584f7f3a073c51a363c00 References: <20240327033041.83625-1-jaewon02.kim@samsung.com> Hi Sam, Thanks for your review. On 3/29/24 02:58, Sam Protsenko wrote: > On Tue, Mar 26, 2024 at 10:35 PM Jaewon Kim wrote: >> The SPI data size is smaller than FIFO, it operates in PIO mode, > Spelling: "The" -> "If the" Thanks, I will fix it v2. >> and if it is larger than FIFO mode, DMA mode is selected. >> >> If the data size is the same as the FIFO size, it operates in PIO mode >> and data is separated into two transfer. In order to prevent, > Nit: "transfer" -> "transfers", "prevent" -> "prevent it" Thanks, I will fix it v2. >> DMA mode must be used from the case of FIFO and data size. >> > You probably mean this code (it occurs two times in the driver): > > xfer->len = fifo_len - 1; > > Can you please elaborate on why it's done this way? Why can't we just > do "xfer->len = fifo_len" and use the whole FIFO for the transfer > instead? I don't understand the necessity to split the transfer into > two chunks if its size is of FIFO length -- wouldn't it fit into FIFO > in that case? (I'm pretty sure this change is correct, just want to > understand how exactly it works). In IRQ mode(S3C64XX_SPI_MODE_RX_RDY_LVL enable), TxOverrun/RxUnderrun irq occurs when FIFO is full. To avoid FIFO full, it is transmitted in a smaller size than fifo_len.(fifo-len - 1) However, in case of "fifo_len == data size" "fifo_len - 1" byte + "1" byte were transmitted separately. This problem can be solved by starting DMA transmission start size from fifo_len. >> Fixes: 1ee806718d5e ("spi: s3c64xx: support interrupt based pio mode") > Just wonder if that fixes some throughput regression, or something > worse (like failed transfers when the transfer size is the same as > FIFO size)? It is not a critical issue, but When I look at the actual waveform, it seems strange that only the last 1-byte is transmitted separately. I thought it was "Fixes", but if not, I will remove it. >> Signed-off-by: Jaewon Kim >> --- >> drivers/spi/spi-s3c64xx.c | 6 +++--- >> 1 file changed, 3 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c >> index 9fcbe040cb2f..81ed5fddf83e 100644 >> --- a/drivers/spi/spi-s3c64xx.c >> +++ b/drivers/spi/spi-s3c64xx.c >> @@ -430,7 +430,7 @@ static bool s3c64xx_spi_can_dma(struct spi_controller *host, >> struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host); >> >> if (sdd->rx_dma.ch && sdd->tx_dma.ch) >> - return xfer->len > sdd->fifo_depth; >> + return xfer->len >= sdd->fifo_depth; >> >> return false; >> } >> @@ -826,11 +826,11 @@ static int s3c64xx_spi_transfer_one(struct spi_controller *host, >> return status; >> } >> >> - if (!is_polling(sdd) && (xfer->len > fifo_len) && >> + if (!is_polling(sdd) && xfer->len >= fifo_len && >> sdd->rx_dma.ch && sdd->tx_dma.ch) { >> use_dma = 1; >> > Would be nice to remove this empty line, while at it. Good, I will remove it also. >> - } else if (xfer->len >= fifo_len) { >> + } else if (xfer->len > fifo_len) { > Below in the same function I can see similar code: > > if (target_len >= fifo_len) > xfer->len = fifo_len - 1; > > Shouldn't that 'if' condition be fixed too? Or it's ok as it is? (Just > noticed it by searching, not sure myself, hence asking). You are correct. This 'if' condition should not have been modified. >> tx_buf = xfer->tx_buf; >> rx_buf = xfer->rx_buf; >> origin_len = xfer->len; >> -- >> 2.43.2 >> >> Thanks Jaewon Kim From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D94CEC6FD1F for ; Fri, 29 Mar 2024 05:54:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To:Cc:To:Subject: From:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ftQSukihTfKJkMr6dfstqortFNkLTEkXSmS41n4cbrU=; b=2a3jTXT+EQuYie w+to8dnEkdB2GD2n1lt6xnU5AbY6N/zfY4yqdEy529Qjbb2+roKnIKZXIT4WbNEEvHXNfuiJQyDBW Y/e500f1GQGy5PdXM+C89kuq5mLyY4KK56r9Y/FDwVbWRoxbiqqK/1EUVAdOAXInoPT9PxxVamQ7S caCt42KiPH7q2MIDe+/kUKkWkDPMm0S2f1LGKIVKoq+SAtygT2W1i01mwLv9TfjlkVmz9EDqOAggC VjcPTe+WaR1ycixlSzWU1c9bLTu64sQhY3Z6xqw+D2PZfjVd2vvDamZtDViauiujk8Dk4t0MiFmQ2 TmpzGeZTysR81TZEfbOA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rq5Bf-0000000GxdX-2zkw; Fri, 29 Mar 2024 05:53:59 +0000 Received: from mailout1.samsung.com ([203.254.224.24]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rq5Bb-0000000GxcN-0ee0 for linux-arm-kernel@lists.infradead.org; Fri, 29 Mar 2024 05:53:57 +0000 Received: from epcas2p2.samsung.com (unknown [182.195.41.54]) by mailout1.samsung.com (KnoxPortal) with ESMTP id 20240329055348epoutp01ea29728796b7d178388245692af677b1~BJnefBWZZ1229612296epoutp01o for ; Fri, 29 Mar 2024 05:53:48 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.samsung.com 20240329055348epoutp01ea29728796b7d178388245692af677b1~BJnefBWZZ1229612296epoutp01o DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1711691628; bh=PQUcA7QC3xHCPhhP5+dYZWwWhUzQV3dMsOt9Dcqdz4s=; h=Date:From:Subject:To:Cc:In-Reply-To:References:From; b=VyOdHSFGAb9tYw7AWiyJ1lE6o4HiixfSqoAL6soPNFDHSmw8J26DL8JabPakpvcd/ FQiTTHIa/aggv8ZDV1H8GtZHDxwlE1vM7pOkwHbHXCaf+7ooaf/5I8JLQaNTx4/SBO El6mvSm11+SaN6K4dAdbrDLdjMZXwOexTUgTmnRI= Received: from epsnrtp3.localdomain (unknown [182.195.42.164]) by epcas2p1.samsung.com (KnoxPortal) with ESMTP id 20240329055347epcas2p1fd2a6e7ac8451f541dc34651cd3bd209~BJndpBAsM2188521885epcas2p1L; Fri, 29 Mar 2024 05:53:47 +0000 (GMT) Received: from epsmges2p1.samsung.com (unknown [182.195.36.102]) by epsnrtp3.localdomain (Postfix) with ESMTP id 4V5V2f6mlqz4x9QH; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) Received: from epcas2p4.samsung.com ( [182.195.41.56]) by epsmges2p1.samsung.com (Symantec Messaging Gateway) with SMTP id 9C.8B.09673.A6756066; Fri, 29 Mar 2024 14:53:46 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas2p4.samsung.com (KnoxPortal) with ESMTPA id 20240329055346epcas2p43987f15b85181ea5dafeb9c0883c224e~BJnclOo-q0505505055epcas2p4e; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20240329055346epsmtrp215863283d5d0f39bb922a9814050280f~BJncjJ6pV0600906009epsmtrp2M; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) X-AuditID: b6c32a45-0aecca80000025c9-64-6606576a3469 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 40.96.08924.A6756066; Fri, 29 Mar 2024 14:53:46 +0900 (KST) Received: from [10.229.18.66] (unknown [10.229.18.66]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20240329055346epsmtip23c40f90f2bc7ab907c62bc1c9effd8d4~BJncSQ9ev1495514955epsmtip2o; Fri, 29 Mar 2024 05:53:46 +0000 (GMT) Message-ID: <63355869-e679-7226-7719-36b62169db7e@samsung.com> Date: Fri, 29 Mar 2024 14:53:36 +0900 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 From: Jaewon Kim Subject: Re: [PATCH] spi: s3c64xx: Use DMA mode from fifo size To: Sam Protsenko Cc: Andi Shyti , Mark Brown , Krzysztof Kozlowski , Alim Akhtar , linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Content-Language: en-US In-Reply-To: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrIJsWRmVeSWpSXmKPExsWy7bCmhW5WOFuawZ5ZhhYP5m1js7j/tYPR YurDJ2wWe19vZbfY9Pgaq8XlXXPYLGac38dk0fjxJrvF8759TA6cHptWdbJ53Lm2h81j85J6 j74tqxg9Pm+SC2CNyrbJSE1MSS1SSM1Lzk/JzEu3VfIOjneONzUzMNQ1tLQwV1LIS8xNtVVy 8QnQdcvMAbpHSaEsMacUKBSQWFyspG9nU5RfWpKqkJFfXGKrlFqQklNgXqBXnJhbXJqXrpeX WmJlaGBgZApUmJCdMXfjfaaCx7IVxxacZW5gXCHWxcjJISFgItGz4i9jFyMXh5DADkaJY28n MUE4nxglHm++wQLhfGOU2NLwgh2m5dGDOVAtexklXt54wgzhvGaUWHf5LDNIFa+AncTPSXNZ QWwWAVWJN393MkLEBSVOznzCAmKLCkRLtC67zwZiswloS3xfvxisXhiod+KOJ2D1IgJ6Eutm vmIHWcAssI5J4tnEq0wgCWYBcYlbT+aD2ZwCgRL3V56CistLNG+dDXaRhMBMDontLxtZIe52 keje94ENwhaWeHV8C9Q/UhKf3+2FiudLtF05AxWvkdi44BIjhG0vsejMT6A4B9ACTYn1u/RB TAkBZYkjt1gg1vJJdBz+yw4R5pXoaBOCaFSTuD/1HNRwGYlJR1YyQdgeEi2NU5kmMCrOQgqV WUgem4XkmVkIexcwsqxiFEstKM5NTy02KjCEx3Zyfu4mRnBa1XLdwTj57Qe9Q4xMHIyHGCU4 mJVEeHceZUkT4k1JrKxKLcqPLyrNSS0+xGgKjJuJzFKiyfnAxJ5XEm9oYmlgYmZmaG5kamCu JM57r3VuipBAemJJanZqakFqEUwfEwenVAPTrpa1uldXs004kfqvLdroaJTaxXeflK9eElzW mpmn8fYE+/Z8kUMrLOeFFR41qDnxdtXsqWv3SvoUxZ+5fL/j54Yfe7rTzFy+296T6A9k4st+ rRbMln1SM43XJvrtQv0l4S4KLXVsex8r+bulTq6d/1e1+Ur1KwuV+4cO5i2Yc197/kvTP+1X s+Yd3eZaqbYxZMvptLUfox6dP5LXvdwlde/F7/qyy94HLvia8Wjh69lz/t/kyC7WdpdtWqoS NjvP2kuicp2Ab/DSmblCYod4jgZOaVl0zCAyp/Q4q1THVC/ruSXHslh3eMXLKvqvWTPNzXjT 99D73ErybTHnNF58l8lvXu+1ynZtvvqd//ZPlViKMxINtZiLihMBmrbMTzQEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpikeLIzCtJLcpLzFFi42LZdlhJXjcrnC3N4OM6SYsH87axWdz/2sFo MfXhEzaLva+3sltsenyN1eLyrjlsFjPO72OyaPx4k93ied8+JgdOj02rOtk87lzbw+axeUm9 R9+WVYwenzfJBbBGcdmkpOZklqUW6dslcGXM3XifqeCxbMWxBWeZGxhXiHUxcnJICJhIPHow h7GLkYtDSGA3o8S/C8fYIRIyEsuf9bFB2MIS91uOsEIUvWSUePZ/OxNIglfATuLnpLmsIDaL gKrEm787GSHighInZz5hAbFFBaIlVn++AFbDJqAt8X39YjBbGKh34o4nYPUiAnoS62a+YgdZ wCywjkli5vJd7BDbbjBKLL76HuwMZgFxiVtP5oNt5hQIlLi/8hQTRNxMomtrFyOELS/RvHU2 8wRGoVlIDpmFpH0WkpZZSFoWMLKsYpRMLSjOTc8tNiwwzEst1ytOzC0uzUvXS87P3cQIjiYt zR2M21d90DvEyMTBeIhRgoNZSYR351GWNCHelMTKqtSi/Pii0pzU4kOM0hwsSuK84i96U4QE 0hNLUrNTUwtSi2CyTBycUg1MDXZeOzkvNvGwTvZMuc0nqGNb5CfEYvTnyjPhqHNfDiv7TJ6f z2owj7G00F5NbdfCFtanfr9KWpJfPL2Us3PmGqGcRZmxIa4akft5uP+r7M851jTF8WdNxMNX jHX69YXq06ckyjp0flxX/9/DU+245xrpAr3kWO7SbX6KFQkna5Zxp/QJXjxxtPptow73rqoS z/DWGQ07ussFJ+9lUNxXeK/++5Ff6SY75aeYBL5a2/T/RdT8Qo+k9KA5W18dmcS4LnwHA0MY N8sz68MN+eaLL0889Sf8t2+g7/xr6UXJwpP37Hki4h9R8E+C6Rvn6cRFfr4daalfSz5leMRu qZ1/s6ChQvnwShHOR38LViixFGckGmoxFxUnAgBJSJplFQMAAA== X-CMS-MailID: 20240329055346epcas2p43987f15b85181ea5dafeb9c0883c224e X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240327033501epcas2p2bbe21301da5584f7f3a073c51a363c00 References: <20240327033041.83625-1-jaewon02.kim@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240328_225355_998340_95402B9C X-CRM114-Status: GOOD ( 38.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgU2FtLAoKVGhhbmtzIGZvciB5b3VyIHJldmlldy4KCgpPbiAzLzI5LzI0IDAyOjU4LCBTYW0g UHJvdHNlbmtvIHdyb3RlOgo+IE9uIFR1ZSwgTWFyIDI2LCAyMDI0IGF0IDEwOjM14oCvUE0gSmFl d29uIEtpbTxqYWV3b24wMi5raW1Ac2Ftc3VuZy5jb20+ICB3cm90ZToKPj4gVGhlIFNQSSBkYXRh IHNpemUgaXMgc21hbGxlciB0aGFuIEZJRk8sIGl0IG9wZXJhdGVzIGluIFBJTyBtb2RlLAo+IFNw ZWxsaW5nOiAiVGhlIiAtPiAiSWYgdGhlIgoKVGhhbmtzLCBJIHdpbGwgZml4IGl0IHYyLgoKPj4g YW5kIGlmIGl0IGlzIGxhcmdlciB0aGFuIEZJRk8gbW9kZSwgRE1BIG1vZGUgaXMgc2VsZWN0ZWQu Cj4+Cj4+IElmIHRoZSBkYXRhIHNpemUgaXMgdGhlIHNhbWUgYXMgdGhlIEZJRk8gc2l6ZSwgaXQg b3BlcmF0ZXMgaW4gUElPIG1vZGUKPj4gYW5kIGRhdGEgaXMgc2VwYXJhdGVkIGludG8gdHdvIHRy YW5zZmVyLiBJbiBvcmRlciB0byBwcmV2ZW50LAo+IE5pdDogInRyYW5zZmVyIiAtPiAidHJhbnNm ZXJzIiwgInByZXZlbnQiIC0+ICJwcmV2ZW50IGl0IgoKVGhhbmtzLCBJIHdpbGwgZml4IGl0IHYy LgoKPj4gRE1BIG1vZGUgbXVzdCBiZSB1c2VkIGZyb20gdGhlIGNhc2Ugb2YgRklGTyBhbmQgZGF0 YSBzaXplLgo+Pgo+IFlvdSBwcm9iYWJseSBtZWFuIHRoaXMgY29kZSAoaXQgb2NjdXJzIHR3byB0 aW1lcyBpbiB0aGUgZHJpdmVyKToKPgo+ICAgICAgeGZlci0+bGVuID0gZmlmb19sZW4gLSAxOwo+ Cj4gQ2FuIHlvdSBwbGVhc2UgZWxhYm9yYXRlIG9uIHdoeSBpdCdzIGRvbmUgdGhpcyB3YXk/IFdo eSBjYW4ndCB3ZSBqdXN0Cj4gZG8gInhmZXItPmxlbiA9IGZpZm9fbGVuIiBhbmQgdXNlIHRoZSB3 aG9sZSBGSUZPIGZvciB0aGUgdHJhbnNmZXIKPiBpbnN0ZWFkPyBJIGRvbid0IHVuZGVyc3RhbmQg dGhlIG5lY2Vzc2l0eSB0byBzcGxpdCB0aGUgdHJhbnNmZXIgaW50bwo+IHR3byBjaHVua3MgaWYg aXRzIHNpemUgaXMgb2YgRklGTyBsZW5ndGggLS0gd291bGRuJ3QgaXQgZml0IGludG8gRklGTwo+ IGluIHRoYXQgY2FzZT8gKEknbSBwcmV0dHkgc3VyZSB0aGlzIGNoYW5nZSBpcyBjb3JyZWN0LCBq dXN0IHdhbnQgdG8KPiB1bmRlcnN0YW5kIGhvdyBleGFjdGx5IGl0IHdvcmtzKS4KCkluIElSUSBt b2RlKFMzQzY0WFhfU1BJX01PREVfUlhfUkRZX0xWTCBlbmFibGUpLCBUeE92ZXJydW4vUnhVbmRl cnJ1biAKaXJxIG9jY3VycyB3aGVuIEZJRk8gaXMgZnVsbC4KClRvIGF2b2lkIEZJRk8gZnVsbCwg aXQgaXMgdHJhbnNtaXR0ZWQgaW4gYSBzbWFsbGVyIHNpemUgdGhhbiAKZmlmb19sZW4uKGZpZm8t bGVuIC0gMSkKCkhvd2V2ZXIsIGluIGNhc2Ugb2YgImZpZm9fbGVuID09IGRhdGEgc2l6ZSIgImZp Zm9fbGVuIC0gMSIgYnl0ZSArICIxIiAKYnl0ZSB3ZXJlIHRyYW5zbWl0dGVkIHNlcGFyYXRlbHku CgpUaGlzIHByb2JsZW0gY2FuIGJlIHNvbHZlZCBieSBzdGFydGluZyBETUEgdHJhbnNtaXNzaW9u IHN0YXJ0IHNpemUgZnJvbSAKZmlmb19sZW4uCgo+PiBGaXhlczogMWVlODA2NzE4ZDVlICgic3Bp OiBzM2M2NHh4OiBzdXBwb3J0IGludGVycnVwdCBiYXNlZCBwaW8gbW9kZSIpCj4gSnVzdCB3b25k ZXIgaWYgdGhhdCBmaXhlcyBzb21lIHRocm91Z2hwdXQgcmVncmVzc2lvbiwgb3Igc29tZXRoaW5n Cj4gd29yc2UgKGxpa2UgZmFpbGVkIHRyYW5zZmVycyB3aGVuIHRoZSB0cmFuc2ZlciBzaXplIGlz IHRoZSBzYW1lIGFzCj4gRklGTyBzaXplKT8KCkl0IGlzIG5vdCBhIGNyaXRpY2FsIGlzc3VlLCBi dXQgV2hlbiBJIGxvb2sgYXQgdGhlIGFjdHVhbCB3YXZlZm9ybSwgaXQgCnNlZW1zIHN0cmFuZ2Ug dGhhdCBvbmx5IHRoZSBsYXN0IDEtYnl0ZSBpcyB0cmFuc21pdHRlZCBzZXBhcmF0ZWx5LgoKSSB0 aG91Z2h0IGl0IHdhcyAiRml4ZXMiLCBidXQgaWYgbm90LCBJIHdpbGwgcmVtb3ZlIGl0LgoKPj4g U2lnbmVkLW9mZi1ieTogSmFld29uIEtpbTxqYWV3b24wMi5raW1Ac2Ftc3VuZy5jb20+Cj4+IC0t LQo+PiAgIGRyaXZlcnMvc3BpL3NwaS1zM2M2NHh4LmMgfCA2ICsrKy0tLQo+PiAgIDEgZmlsZSBj aGFuZ2VkLCAzIGluc2VydGlvbnMoKyksIDMgZGVsZXRpb25zKC0pCj4+Cj4+IGRpZmYgLS1naXQg YS9kcml2ZXJzL3NwaS9zcGktczNjNjR4eC5jIGIvZHJpdmVycy9zcGkvc3BpLXMzYzY0eHguYwo+ PiBpbmRleCA5ZmNiZTA0MGNiMmYuLjgxZWQ1ZmRkZjgzZSAxMDA2NDQKPj4gLS0tIGEvZHJpdmVy cy9zcGkvc3BpLXMzYzY0eHguYwo+PiArKysgYi9kcml2ZXJzL3NwaS9zcGktczNjNjR4eC5jCj4+ IEBAIC00MzAsNyArNDMwLDcgQEAgc3RhdGljIGJvb2wgczNjNjR4eF9zcGlfY2FuX2RtYShzdHJ1 Y3Qgc3BpX2NvbnRyb2xsZXIgKmhvc3QsCj4+ICAgICAgICAgIHN0cnVjdCBzM2M2NHh4X3NwaV9k cml2ZXJfZGF0YSAqc2RkID0gc3BpX2NvbnRyb2xsZXJfZ2V0X2RldmRhdGEoaG9zdCk7Cj4+Cj4+ ICAgICAgICAgIGlmIChzZGQtPnJ4X2RtYS5jaCAmJiBzZGQtPnR4X2RtYS5jaCkKPj4gLSAgICAg ICAgICAgICAgIHJldHVybiB4ZmVyLT5sZW4gPiBzZGQtPmZpZm9fZGVwdGg7Cj4+ICsgICAgICAg ICAgICAgICByZXR1cm4geGZlci0+bGVuID49IHNkZC0+Zmlmb19kZXB0aDsKPj4KPj4gICAgICAg ICAgcmV0dXJuIGZhbHNlOwo+PiAgIH0KPj4gQEAgLTgyNiwxMSArODI2LDExIEBAIHN0YXRpYyBp bnQgczNjNjR4eF9zcGlfdHJhbnNmZXJfb25lKHN0cnVjdCBzcGlfY29udHJvbGxlciAqaG9zdCwK Pj4gICAgICAgICAgICAgICAgICAgICAgICAgIHJldHVybiBzdGF0dXM7Cj4+ICAgICAgICAgIH0K Pj4KPj4gLSAgICAgICBpZiAoIWlzX3BvbGxpbmcoc2RkKSAmJiAoeGZlci0+bGVuID4gZmlmb19s ZW4pICYmCj4+ICsgICAgICAgaWYgKCFpc19wb2xsaW5nKHNkZCkgJiYgeGZlci0+bGVuID49IGZp Zm9fbGVuICYmCj4+ICAgICAgICAgICAgICBzZGQtPnJ4X2RtYS5jaCAmJiBzZGQtPnR4X2RtYS5j aCkgewo+PiAgICAgICAgICAgICAgICAgIHVzZV9kbWEgPSAxOwo+Pgo+IFdvdWxkIGJlIG5pY2Ug dG8gcmVtb3ZlIHRoaXMgZW1wdHkgbGluZSwgd2hpbGUgYXQgaXQuCkdvb2QsIEkgd2lsbCByZW1v dmUgaXQgYWxzby4KPj4gLSAgICAgICB9IGVsc2UgaWYgKHhmZXItPmxlbiA+PSBmaWZvX2xlbikg ewo+PiArICAgICAgIH0gZWxzZSBpZiAoeGZlci0+bGVuID4gZmlmb19sZW4pIHsKPiBCZWxvdyBp biB0aGUgc2FtZSBmdW5jdGlvbiBJIGNhbiBzZWUgc2ltaWxhciBjb2RlOgo+Cj4gICAgICAgICAg ICAgIGlmICh0YXJnZXRfbGVuID49IGZpZm9fbGVuKQo+ICAgICAgICAgICAgICAgICAgeGZlci0+ bGVuID0gZmlmb19sZW4gLSAxOwo+Cj4gU2hvdWxkbid0IHRoYXQgJ2lmJyBjb25kaXRpb24gYmUg Zml4ZWQgdG9vPyBPciBpdCdzIG9rIGFzIGl0IGlzPyAoSnVzdAo+IG5vdGljZWQgaXQgYnkgc2Vh cmNoaW5nLCBub3Qgc3VyZSBteXNlbGYsIGhlbmNlIGFza2luZykuCgpZb3UgYXJlIGNvcnJlY3Qu IFRoaXMgJ2lmJyBjb25kaXRpb24gc2hvdWxkIG5vdCBoYXZlIGJlZW4gbW9kaWZpZWQuCgo+PiAg ICAgICAgICAgICAgICAgIHR4X2J1ZiA9IHhmZXItPnR4X2J1ZjsKPj4gICAgICAgICAgICAgICAg ICByeF9idWYgPSB4ZmVyLT5yeF9idWY7Cj4+ICAgICAgICAgICAgICAgICAgb3JpZ2luX2xlbiA9 IHhmZXItPmxlbjsKPj4gLS0KPj4gMi40My4yCj4+Cj4+CgpUaGFua3MKCkphZXdvbiBLaW0KCgpf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0t a2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcK aHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2Vy bmVsCg==