Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: [PATCH v5 05/13] soc: mediatek: cmdq: return send msg error code
To:     Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Jassi Brar <jassisinghbrar@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>
Cc:     linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        devicetree@vger.kernel.org, wsd_upstream@mediatek.com,
        dri-devel@lists.freedesktop.org,
        Bibby Hsieh <bibby.hsieh@mediatek.com>,
        CK Hu <ck.hu@mediatek.com>,
        Houlong Wei <houlong.wei@mediatek.com>,
        linux-arm-kernel@lists.infradead.org,
        HS Liao <hs.liao@mediatek.com>
References: <1583664775-19382-1-git-send-email-dennis-yc.hsieh@mediatek.com>
 <1583664775-19382-6-git-send-email-dennis-yc.hsieh@mediatek.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
Autocrypt: addr=matthias.bgg@gmail.com; prefer-encrypt=mutual; keydata=
 mQINBFP1zgUBEAC21D6hk7//0kOmsUrE3eZ55kjc9DmFPKIz6l4NggqwQjBNRHIMh04BbCMY
 fL3eT7ZsYV5nur7zctmJ+vbszoOASXUpfq8M+S5hU2w7sBaVk5rpH9yW8CUWz2+ZpQXPJcFa
 OhLZuSKB1F5JcvLbETRjNzNU7B3TdS2+zkgQQdEyt7Ij2HXGLJ2w+yG2GuR9/iyCJRf10Okq
 gTh//XESJZ8S6KlOWbLXRE+yfkKDXQx2Jr1XuVvM3zPqH5FMg8reRVFsQ+vI0b+OlyekT/Xe
 0Hwvqkev95GG6x7yseJwI+2ydDH6M5O7fPKFW5mzAdDE2g/K9B4e2tYK6/rA7Fq4cqiAw1+u
 EgO44+eFgv082xtBez5WNkGn18vtw0LW3ESmKh19u6kEGoi0WZwslCNaGFrS4M7OH+aOJeqK
 fx5dIv2CEbxc6xnHY7dwkcHikTA4QdbdFeUSuj4YhIZ+0QlDVtS1QEXyvZbZky7ur9rHkZvP
 ZqlUsLJ2nOqsmahMTIQ8Mgx9SLEShWqD4kOF4zNfPJsgEMB49KbS2o9jxbGB+JKupjNddfxZ
 HlH1KF8QwCMZEYaTNogrVazuEJzx6JdRpR3sFda/0x5qjTadwIW6Cl9tkqe2h391dOGX1eOA
 1ntn9O/39KqSrWNGvm+1raHK+Ev1yPtn0Wxn+0oy1tl67TxUjQARAQABtClNYXR0aGlhcyBC
 cnVnZ2VyIDxtYXR0aGlhcy5iZ2dAZ21haWwuY29tPokCUgQTAQIAPAIbAwYLCQgHAwIGFQgC
 CQoLBBYCAwECHgECF4AWIQTmuZIYwPLDJRwsOhfZFAuyVhMC8QUCWt3scQIZAQAKCRDZFAuy
 VhMC8WzRD/4onkC+gCxG+dvui5SXCJ7bGLCu0xVtiGC673Kz5Aq3heITsERHBV0BqqctOEBy
 ZozQQe2Hindu9lasOmwfH8+vfTK+2teCgWesoE3g3XKbrOCB4RSrQmXGC3JYx6rcvMlLV/Ch
 YMRR3qv04BOchnjkGtvm9aZWH52/6XfChyh7XYndTe5F2bqeTjt+kF/ql+xMc4E6pniqIfkv
 c0wsH4CkBHqoZl9w5e/b9MspTqsU9NszTEOFhy7p2CYw6JEa/vmzR6YDzGs8AihieIXDOfpT
 DUr0YUlDrwDSrlm/2MjNIPTmSGHH94ScOqu/XmGW/0q1iar/Yr0leomUOeeEzCqQtunqShtE
 4Mn2uEixFL+9jiVtMjujr6mphznwpEqObPCZ3IcWqOFEz77rSL+oqFiEA03A2WBDlMm++Sve
 9jpkJBLosJRhAYmQ6ey6MFO6Krylw1LXcq5z1XQQavtFRgZoruHZ3XlhT5wcfLJtAqrtfCe0
 aQ0kJW+4zj9/So0uxJDAtGuOpDYnmK26dgFN0tAhVuNInEVhtErtLJHeJzFKJzNyQ4GlCaLw
 jKcwWcqDJcrx9R7LsCu4l2XpKiyxY6fO4O8DnSleVll9NPfAZFZvf8AIy3EQ8BokUsiuUYHz
 wUo6pclk55PZRaAsHDX/fNr24uC6Eh5oNQ+v4Pax/gtyybkCDQRd1TkHARAAt1BBpmaH+0o+
 deSyJotkrpzZZkbSs5ygBniCUGQqXpWqgrc7Uo/qtxOFL91uOsdX1/vsnJO9FyUv3ZNI2Thw
 NVGCTvCP9E6u4gSSuxEfVyVThCSPvRJHCG2rC+EMAOUMpxokcX9M2b7bBEbcSjeP/E4KTa39
 q+JJSeWliaghUfMXXdimT/uxpP5Aa2/D/vcUUGHLelf9TyihHyBohdyNzeEF3v9rq7kdqamZ
 Ihb+WYrDio/SzqTd1g+wnPJbnu45zkoQrYtBu58n7u8oo+pUummOuTR2b6dcsiB9zJaiVRIg
 OqL8p3K2fnE8Ewwn6IKHnLTyx5T/r2Z0ikyOeijDumZ0VOPPLTnwmb780Nym3LW1OUMieKtn
 I3v5GzZyS83NontvsiRd4oPGQDRBT39jAyBr8vDRl/3RpLKuwWBFTs1bYMLu0sYarwowOz8+
 Mn+CRFUvRrXxociw5n0P1PgJ7vQey4muCZ4VynH1SeVb3KZ59zcQHksKtpzz2OKhtX8FCeVO
 mHW9u4x8s/oUVMZCXEq9QrmVhdIvJnBCqq+1bh5UC2Rfjm/vLHwt5hes0HDstbCzLyiA0LTI
 ADdP77RN2OJbzBkCuWE21YCTLtc8kTQlP+G8m23K5w8k2jleCSKumprCr/5qPyNlkie1HC4E
 GEAfdfN+uLsFw6qPzSAsmukAEQEAAYkEbAQYAQgAIBYhBOa5khjA8sMlHCw6F9kUC7JWEwLx
 BQJd1TkHAhsCAkAJENkUC7JWEwLxwXQgBBkBCAAdFiEEUdvKHhzqrUYPB/u8L21+TfbCqH4F
 Al3VOQcACgkQL21+TfbCqH79RRAAtlb6oAL9y8JM5R1T3v02THFip8OMh7YvEJCnezle9Apq
 C6Vx26RSQjBV1JwSBv6BpgDBNXarTGCPXcre6KGfX8u1r6hnXAHZNHP7bFGJQiBv5RqGFf45
 OhOhbjXCyHc0jrnNjY4M2jTkUC+KIuOzasvggU975nolC8MiaBqfgMB2ab5W+xEiTcNCOg3+
 1SRs5/ZkQ0iyyba2FihSeSw3jTUjPsJBF15xndexoc9jpi0RKuvPiJ191Xa3pzNntIxpsxqc
 ZkS1HSqPI63/urNezeSejBzW0Xz2Bi/b/5R9Hpxp1AEC3OzabOBATY/1Bmh2eAVK3xpN2Fe1
 Zj7HrTgmzBmSefMcSXN0oKQWEI5tHtBbw5XUj0Nw4hMhUtiMfE2HAqcaozsL34sEzi3eethZ
 IvKnIOTmllsDFMbOBa8oUSoaNg7GzkWSKJ59a9qPJkoj/hJqqeyEXF+WTCUv6FcA8BtBJmVf
 FppFzLFM/QzF5fgDZmfjc9czjRJHAGHRMMnQlW88iWamjYVye57srNq9pUql6A4lITF7w00B
 5PXINFk0lMcNUdkWipu24H6rJhOO6xSP4n6OrCCcGsXsAR5oH3d4TzA9iPYrmfXAXD+hTp82
 s+7cEbTsCJ9MMq09/GTCeroTQiqkp50UaR0AvhuPdfjJwVYZfmMS1+5IXA/KY6DbGBAAs5ti
 AK0ieoZlCv/YxOSMCz10EQWMymD2gghjxojf4iwB2MbGp8UN4+++oKLHz+2j+IL08rd2ioFN
 YCJBFDVoDRpF/UnrQ8LsH55UZBHuu5XyMkdJzMaHRVQc1rzfluqx+0a/CQ6Cb2q7J2d45nYx
 8jMSCsGj1/iU/bKjMBtuh91hsbdWCxMRW0JnGXxcEUklbhA5uGj3W4VYCfTQxwK6JiVt7JYp
 bX7JdRKIyq3iMDcsTXi7dhhwqsttQRwbBci0UdFGAG4jT5p6u65MMDVTXEgYfZy0674P06qf
 uSyff73ivwvLR025akzJui8MLU23rWRywXOyTINz8nsPFT4ZSGT1hr5VnIBs/esk/2yFmVoc
 FAxs1aBO29iHmjJ8D84EJvOcKfh9RKeW8yeBNKXHrcOV4MbMOts9+vpJgBFDnJeLFQPtTHuI
 kQXT4+yLDvwOVAW9MPLfcHlczq/A/nhGVaG+RKWDfJWNSu/mbhqUQt4J+RFpfx1gmL3yV8NN
 7JXABPi5M97PeKdx6qc/c1o3oEHH8iBkWZIYMS9fd6rtAqV3+KH5Ors7tQVtwUIDYEvttmeO
 ifvpW6U/4au4zBYfvvXagbyXJhG9mZvz+jN1cr0/G2ZC93IbjFFwUmHtXS4ttQ4pbrX6fjTe
 lq5vmROjiWirpZGm+WA3Vx9QRjqfMdS5Ag0EXdU5SAEQAJu/Jk58uOB8HSGDSuGUB+lOacXC
 bVOOSywZkq+Ayv+3q/XIabyeaYMwhriNuXHjUxIORQoWHIHzTCqsAgHpJFfSHoM4ulCuOPFt
 XjqfEHkA0urB6S0jnvJ6ev875lL4Yi6JJO7WQYRs/l7OakJiT13GoOwDIn7hHH/PGUqQoZlA
 d1n5SVdg6cRd7EqJ+RMNoud7ply6nUSCRMNWbNqbgyWjKsD98CMjHa33SB9WQQSQyFlf+dz+
 dpirWENCoY3vvwKJaSpfeqKYuqPVSxnqpKXqqyjNnG9W46OWZp+JV5ejbyUR/2U+vMwbTilL
 cIUpTgdmxPCA6J0GQjmKNsNKKYgIMn6W4o/LoiO7IgROm1sdn0KbJouCa2QZoQ0+p/7mJXhl
 tA0XGZhNlI3npD1lLpjdd42lWboU4VeuUp4VNOXIWU/L1NZwEwMIqzFXl4HmRi8MYbHHbpN5
 zW+VUrFfeRDPyjrYpax+vWS+l658PPH+sWmhj3VclIoAU1nP33FrsNfp5BiQzao30rwe4ntd
 eEdPENvGmLfCwiUV2DNVrmJaE3CIUUl1KIRoB5oe7rJeOvf0WuQhWjIU98glXIrh3WYd7vsf
 jtbEXDoWhVtwZMShMvp7ccPCe2c4YBToIthxpDhoDPUdNwOssHNLD8G4JIBexwi4q7IT9lP6
 sVstwvA5ABEBAAGJAjYEGAEIACAWIQTmuZIYwPLDJRwsOhfZFAuyVhMC8QUCXdU5SAIbDAAK
 CRDZFAuyVhMC8bXXD/4xyfbyPGnRYtR0KFlCgkG2XWeWSR2shSiM1PZGRPxR888zA2WBYHAk
 7NpJlFchpaErV6WdFrXQjDAd9YwaEHucfS7SAhxIqdIqzV5vNFrMjwhB1N8MfdUJDpgyX7Zu
 k/Phd5aoZXNwsCRqaD2OwFZXr81zSXwE2UdPmIfTYTjeVsOAI7GZ7akCsRPK64ni0XfoXue2
 XUSrUUTRimTkuMHrTYaHY3544a+GduQQLLA+avseLmjvKHxsU4zna0p0Yb4czwoJj+wSkVGQ
 NMDbxcY26CMPK204jhRm9RG687qq6691hbiuAtWABeAsl1AS+mdS7aP/4uOM4kFCvXYgIHxP
 /BoVz9CZTMEVAZVzbRKyYCLUf1wLhcHzugTiONz9fWMBLLskKvq7m1tlr61mNgY9nVwwClMU
 uE7i1H9r/2/UXLd+pY82zcXhFrfmKuCDmOkB5xPsOMVQJH8I0/lbqfLAqfsxSb/X1VKaP243
 jzi+DzD9cvj2K6eD5j5kcKJJQactXqfJvF1Eb+OnxlB1BCLE8D1rNkPO5O742Mq3MgDmq19l
 +abzEL6QDAAxn9md8KwrA3RtucNh87cHlDXfUBKa7SRvBjTczDg+HEPNk2u3hrz1j3l2rliQ
 y1UfYx7Vk/TrdwUIJgKS8QAr8Lw9WuvY2hSqL9vEjx8VAkPWNWPwrQ==
Message-ID: <a32545e3-ec65-e813-871a-7c0c6320373b@gmail.com>
Date:   Sat, 16 May 2020 19:56:35 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.7.0
MIME-Version: 1.0
In-Reply-To: <1583664775-19382-6-git-send-email-dennis-yc.hsieh@mediatek.com>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


On 08/03/2020 11:52, Dennis YC Hsieh wrote:
> Return error code to client if send message fail,
> so that client has chance to error handling.
> 
> Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
> Fixes: 576f1b4bc802 ("soc: mediatek: Add Mediatek CMDQ helper")
> Reviewed-by: CK Hu <ck.hu@mediatek.com>

Queued for v5.7-fixes

> ---
>  drivers/soc/mediatek/mtk-cmdq-helper.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 2e1bc513569b..98f23ba3ba47 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -351,7 +351,9 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
>  		spin_unlock_irqrestore(&client->lock, flags);
>  	}
>  
> -	mbox_send_message(client->chan, pkt);
> +	err = mbox_send_message(client->chan, pkt);
> +	if (err < 0)
> +		return err;
>  	/* We can send next packet immediately, so just call txdone. */
>  	mbox_client_txdone(client->chan, 0);
>  
>