From: Andy Yan <andy.yan@rock-chips.com>
To: Daniel Kurtz <djkurtz@google.com>
Cc: "David Airlie" <airlied@linux.ie>,
"Heiko Stübner" <heiko@sntech.de>,
fabio.estevam@freescale.com, rmk+kernel@arm.linux.org.uk,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Grant Likely" <grant.likely@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
"Shawn Guo" <shawn.guo@linaro.org>,
"Josh Boyer" <jwboyer@redhat.com>,
"Sean Paul" <seanpaul@chromium.org>,
"Inki Dae" <inki.dae@samsung.com>,
"Dave Airlie" <airlied@redhat.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Lucas Stach" <l.stach@pengutronix.de>,
Zubair.Kakakhel@imgtec.com, "Yakir Yang" <ykk@rock-chips.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
devel@driverdev.osuosl.org,
"open list:OPEN FIRMWARE AND..." <devicetree@vger.kernel.org>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip@lists.infradead.org>,
"Xu Jianqun" <jay.xu@rock-chips.com>,
"Pawel Moll" <pawel.moll@arm.com>,
"mark.yao@rock-chips.com" <mark.yao@rock-chips.com>,
"Mark Rutland" <mark.rutland@arm.com>,
"Ian Campbell" <ijc+devicetree@hellion.org.uk>,
"Kumar Gala" <galak@codeaurora.org>
Subject: Re: [PATCH v11 02/12] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter
Date: Mon, 17 Nov 2014 09:35:17 +0800 [thread overview]
Message-ID: <546950D5.20703@rock-chips.com> (raw)
In-Reply-To: <CAGS+omCQ97eo6BhhfCucgeAK8Kq0GtR8jOiv2AF7x=w2d9F8yw@mail.gmail.com>
On 2014年11月15日 13:41, Daniel Kurtz wrote:
> On Fri, Nov 14, 2014 at 9:39 PM, Andy Yan <andy.yan@rock-chips.com> wrote:
>> drm driver may probe before the i2c bus, so the driver should
>> defer probing until it is available
>>
>> Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
>>
>> ---
>>
>> Changes in v11: None
>> Changes in v10: None
>> Changes in v9: None
>> Changes in v8: None
>> Changes in v7: None
>> Changes in v6: None
>> Changes in v5: None
>> Changes in v4:
>> - defer probe ddc i2c adapter
>>
>> Changes in v3: None
>> Changes in v2: None
>>
>> drivers/staging/imx-drm/imx-hdmi.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/staging/imx-drm/imx-hdmi.c b/drivers/staging/imx-drm/imx-hdmi.c
>> index 79daec4..c2b035a 100644
>> --- a/drivers/staging/imx-drm/imx-hdmi.c
>> +++ b/drivers/staging/imx-drm/imx-hdmi.c
>> @@ -1611,8 +1611,11 @@ static int imx_hdmi_bind(struct device *dev, struct device *master, void *data)
>> ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
>> if (ddc_node) {
>> hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
>> - if (!hdmi->ddc)
>> + if (!hdmi->ddc) {
>> dev_dbg(hdmi->dev, "failed to read ddc node\n");
>> + of_node_put(ddc_node);
>> + return -EPROBE_DEFER;
>> + }
> Nit: You could move "of_node_put()" above "if (!hdmi->ddc)", and not
> need it in two places.
thanks, I will take your advice
>
> Either way, this one is:
> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
>
>> of_node_put(ddc_node);
>> } else {
>> --
>> 1.9.1
>>
>
>
WARNING: multiple messages have this Message-ID (diff)
From: Andy Yan <andy.yan@rock-chips.com>
To: Daniel Kurtz <djkurtz@google.com>
Cc: "Mark Rutland" <mark.rutland@arm.com>,
"Heiko Stübner" <heiko@sntech.de>,
"David Airlie" <airlied@linux.ie>,
dri-devel <dri-devel@lists.freedesktop.org>,
"Yakir Yang" <ykk@rock-chips.com>,
devel@driverdev.osuosl.org, "Pawel Moll" <pawel.moll@arm.com>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip@lists.infradead.org>,
"Grant Likely" <grant.likely@linaro.org>,
"Dave Airlie" <airlied@redhat.com>,
"Xu Jianqun" <jay.xu@rock-chips.com>,
"open list:OPEN FIRMWARE AND..." <devicetree@vger.kernel.org>,
Zubair.Kakakhel@imgtec.com, "Arnd Bergmann" <arnd@arndb.de>,
"Ian Campbell" <ijc+devicetree@hellion.org.uk>,
"Inki Dae" <inki.dae@samsung.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Sean Paul" <seanpaul@chromium.org>,
rmk+kernel@arm.linux.org.uk,
"mark.yao@rock-chips.com" <mark.yao@rock-chips.com>,
fabio.estevam@freescale.com, "Josh Boyer" <jwboyer@redhat.com>
Subject: Re: [PATCH v11 02/12] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter
Date: Mon, 17 Nov 2014 09:35:17 +0800 [thread overview]
Message-ID: <546950D5.20703@rock-chips.com> (raw)
In-Reply-To: <CAGS+omCQ97eo6BhhfCucgeAK8Kq0GtR8jOiv2AF7x=w2d9F8yw@mail.gmail.com>
On 2014年11月15日 13:41, Daniel Kurtz wrote:
> On Fri, Nov 14, 2014 at 9:39 PM, Andy Yan <andy.yan@rock-chips.com> wrote:
>> drm driver may probe before the i2c bus, so the driver should
>> defer probing until it is available
>>
>> Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
>>
>> ---
>>
>> Changes in v11: None
>> Changes in v10: None
>> Changes in v9: None
>> Changes in v8: None
>> Changes in v7: None
>> Changes in v6: None
>> Changes in v5: None
>> Changes in v4:
>> - defer probe ddc i2c adapter
>>
>> Changes in v3: None
>> Changes in v2: None
>>
>> drivers/staging/imx-drm/imx-hdmi.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/staging/imx-drm/imx-hdmi.c b/drivers/staging/imx-drm/imx-hdmi.c
>> index 79daec4..c2b035a 100644
>> --- a/drivers/staging/imx-drm/imx-hdmi.c
>> +++ b/drivers/staging/imx-drm/imx-hdmi.c
>> @@ -1611,8 +1611,11 @@ static int imx_hdmi_bind(struct device *dev, struct device *master, void *data)
>> ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
>> if (ddc_node) {
>> hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
>> - if (!hdmi->ddc)
>> + if (!hdmi->ddc) {
>> dev_dbg(hdmi->dev, "failed to read ddc node\n");
>> + of_node_put(ddc_node);
>> + return -EPROBE_DEFER;
>> + }
> Nit: You could move "of_node_put()" above "if (!hdmi->ddc)", and not
> need it in two places.
thanks, I will take your advice
>
> Either way, this one is:
> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
>
>> of_node_put(ddc_node);
>> } else {
>> --
>> 1.9.1
>>
>
>
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next prev parent reply other threads:[~2014-11-17 1:35 UTC|newest]
Thread overview: 165+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-12 11:59 [PATCH v8 0/9] dw-hdmi: convert imx hdmi to bridge/dw_hdmi Andy Yan
2014-11-12 11:59 ` Andy Yan
2014-11-12 12:01 ` [PATCH v8 1/9] staging: imx-drm: imx-hdmi: make checkpatch happy Andy Yan
2014-11-12 12:01 ` Andy Yan
2014-11-12 12:01 ` [PATCH v8 2/9] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter Andy Yan
2014-11-12 12:01 ` Andy Yan
2014-11-12 12:02 ` [PATCH v8 3/9] staging: imx-drm: imx-hdmi: split imx soc specific code from imx-hdmi Andy Yan
2014-11-12 12:02 ` Andy Yan
2014-11-12 12:03 ` [PATCH v8 4/9] staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw_hdmi Andy Yan
2014-11-12 12:03 ` Andy Yan
2014-11-12 12:03 ` [PATCH v8 5/9] dt-bindings: add document for dw_hdmi Andy Yan
2014-11-12 12:03 ` Andy Yan
2014-11-12 12:03 ` [PATCH v8 6/9] drm: bridge/dw_hdmi: add support for multi byte register width access Andy Yan
2014-11-12 12:03 ` Andy Yan
2014-11-12 12:04 ` [PATCH v8 7/9] drm: bridge/dw_hdmi: convert dw-hdmi to drm_bridge mode Andy Yan
2014-11-12 12:04 ` Andy Yan
2014-11-12 12:05 ` [PATCH v8 8/9] dt-bindings: Add documentation for rockchip dw hdmi Andy Yan
2014-11-12 12:05 ` Andy Yan
2014-11-12 12:05 ` [PATCH v8 9/9] drm: bridge/dw_hdmi: add rockchip rk3288 support Andy Yan
2014-11-12 12:05 ` Andy Yan
2014-11-13 12:52 ` [PATCH v9 0/9] dw-hdmi: convert imx hdmi to bridge/dw_hdmi Andy Yan
2014-11-13 12:52 ` Andy Yan
2014-11-14 3:09 ` [PATCH v10 0/11] " Andy Yan
2014-11-14 3:09 ` Andy Yan
2014-11-14 3:24 ` [PATCH v10 01/11] staging: imx-drm: imx-hdmi: make checkpatch happy Andy Yan
2014-11-14 3:24 ` Andy Yan
2014-11-14 3:25 ` [PATCH v10 02/11] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter Andy Yan
2014-11-14 3:25 ` Andy Yan
2014-11-14 3:25 ` [PATCH v10 03/11] staging: imx-drm: imx-hdmi: split imx soc specific code from imx-hdmi Andy Yan
2014-11-14 3:25 ` Andy Yan
2014-11-14 3:26 ` [PATCH v10 04/11] staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw_hdmi Andy Yan
2014-11-14 3:26 ` Andy Yan
2014-11-14 3:27 ` [PATCH v10 05/11] drm: bridge/dw_hdmi:split some phy configuration to platform driver Andy Yan
2014-11-14 3:27 ` Andy Yan
2014-11-14 10:19 ` Zubair Lutfullah Kakakhel
2014-11-14 10:19 ` Zubair Lutfullah Kakakhel
2014-11-14 10:53 ` Andy Yan
2014-11-14 10:53 ` Andy Yan
2014-11-14 10:55 ` Zubair Lutfullah Kakakhel
2014-11-14 10:55 ` Zubair Lutfullah Kakakhel
2014-11-14 11:08 ` Andy Yan
2014-11-14 11:08 ` Andy Yan
2014-11-14 11:13 ` Zubair Lutfullah Kakakhel
2014-11-14 11:13 ` Zubair Lutfullah Kakakhel
2014-11-15 10:07 ` Daniel Kurtz
2014-11-15 10:07 ` Daniel Kurtz
2014-11-15 10:12 ` Russell King - ARM Linux
2014-11-15 10:12 ` Russell King - ARM Linux
2014-11-15 10:54 ` Russell King - ARM Linux
2014-11-15 10:54 ` Russell King - ARM Linux
2014-11-14 3:27 ` [PATCH v10 06/11] drm: bridge/dw_hdmi: clear i2cmphy_stat0 reg in hdmi_phy_wait_i2c_done Andy Yan
2014-11-14 3:27 ` Andy Yan
2014-11-14 3:28 ` [PATCH v10 07/11] dt-bindings: add document for dw_hdmi Andy Yan
2014-11-14 3:28 ` Andy Yan
2014-11-14 3:29 ` [PATCH v10 08/11] drm: bridge/dw_hdmi: add support for multi byte register width access Andy Yan
2014-11-14 3:29 ` Andy Yan
2014-11-14 3:29 ` [PATCH v10 09/11] drm: bridge/dw_hdmi: convert dw-hdmi to drm_bridge mode Andy Yan
2014-11-14 3:29 ` Andy Yan
2014-11-14 3:30 ` [PATCH v10 10/11] dt-bindings: Add documentation for rockchip dw hdmi Andy Yan
2014-11-14 3:30 ` Andy Yan
2014-11-14 3:31 ` [PATCH v10 11/11] drm: bridge/dw_hdmi: add rockchip rk3288 support Andy Yan
2014-11-14 3:31 ` Andy Yan
2014-11-14 10:23 ` Zubair Lutfullah Kakakhel
2014-11-14 10:23 ` Zubair Lutfullah Kakakhel
2014-11-14 10:37 ` Andy Yan
2014-11-14 10:37 ` Andy Yan
2014-11-14 10:53 ` Zubair Lutfullah Kakakhel
2014-11-14 10:53 ` Zubair Lutfullah Kakakhel
2014-11-14 11:13 ` Andy Yan
2014-11-14 11:13 ` Andy Yan
2014-11-14 11:16 ` Zubair Lutfullah Kakakhel
2014-11-14 11:16 ` Zubair Lutfullah Kakakhel
2014-11-14 11:21 ` Andy Yan
2014-11-14 11:21 ` Andy Yan
2014-11-14 13:37 ` [PATCH v11 0/12] dw-hdmi: convert imx hdmi to bridge/dw_hdmi Andy Yan
2014-11-14 13:37 ` Andy Yan
2014-11-14 13:38 ` [PATCH v11 01/12] staging: imx-drm: imx-hdmi: make checkpatch happy Andy Yan
2014-11-14 13:38 ` Andy Yan
2014-11-15 5:38 ` Daniel Kurtz
2014-11-15 5:38 ` Daniel Kurtz
2014-11-14 13:39 ` [PATCH v11 02/12] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter Andy Yan
2014-11-14 13:39 ` Andy Yan
2014-11-15 5:41 ` Daniel Kurtz
2014-11-15 5:41 ` Daniel Kurtz
2014-11-17 1:35 ` Andy Yan [this message]
2014-11-17 1:35 ` Andy Yan
2014-11-14 13:39 ` [PATCH v11 03/12] staging: imx-drm: imx-hdmi: split imx soc specific code from imx-hdmi Andy Yan
2014-11-14 13:39 ` Andy Yan
2014-11-14 13:40 ` [PATCH v11 04/12] staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw_hdmi Andy Yan
2014-11-14 13:40 ` Andy Yan
2014-11-14 13:41 ` [PATCH v11 05/12] drm: bridge/dw_hdmi: convert dw-hdmi to drm_bridge mode Andy Yan
2014-11-14 13:41 ` Andy Yan
2014-11-14 13:42 ` [PATCH v11 06/12] dt-bindings: add document for dw_hdmi Andy Yan
2014-11-14 13:42 ` Andy Yan
2014-11-14 13:43 ` [PATCH v11 07/12] drm: bridge/dw_hdmi: add support for multi-byte register width access Andy Yan
2014-11-14 13:43 ` Andy Yan
2014-11-14 13:45 ` [PATCH v11 08/12] drm: bridge/dw_hdmi: add mode_valid support Andy Yan
2014-11-14 13:45 ` Andy Yan
2014-11-14 13:45 ` [PATCH v11 09/12] drm: bridge/dw_hdmi: clear i2cmphy_stat0 reg in hdmi_phy_wait_i2c_done Andy Yan
2014-11-14 13:45 ` Andy Yan
2014-11-14 13:46 ` [PATCH v11 10/12] drm: bridge/dw_hdmi: add function dw_hdmi_phy_enable_spare Andy Yan
2014-11-14 13:46 ` Andy Yan
2014-11-14 13:47 ` [PATCH v11 11/12] dt-bindings: Add documentation for rockchip dw hdmi Andy Yan
2014-11-14 13:47 ` Andy Yan
2014-11-14 13:48 ` [PATCH v11 12/12] drm: bridge/dw_hdmi: add rockchip rk3288 support Andy Yan
2014-11-14 13:48 ` Andy Yan
2014-11-15 5:42 ` [PATCH v11 0/12] dw-hdmi: convert imx hdmi to bridge/dw_hdmi Daniel Kurtz
2014-11-15 5:46 ` Daniel Kurtz
2014-11-15 5:46 ` Daniel Kurtz
2014-11-13 12:53 ` [PATCH v9 1/9] staging: imx-drm: imx-hdmi: make checkpatch happy Andy Yan
2014-11-13 12:53 ` Andy Yan
2014-11-13 12:54 ` [PATCH v9 2/9] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter Andy Yan
2014-11-13 12:54 ` Andy Yan
2014-11-13 12:55 ` [PATCH v9 3/9] staging: imx-drm: imx-hdmi: split imx soc specific code from imx-hdmi Andy Yan
2014-11-13 12:55 ` Andy Yan
2014-11-13 12:55 ` [PATCH v9 4/9] staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw_hdmi Andy Yan
2014-11-13 12:55 ` Andy Yan
2014-11-13 12:55 ` [PATCH v9 5/9] dt-bindings: add document for dw_hdmi Andy Yan
2014-11-13 12:55 ` Andy Yan
2014-11-13 12:55 ` [PATCH v9 6/9] drm: bridge/dw_hdmi: add support for multi byte register width access Andy Yan
2014-11-13 12:55 ` Andy Yan
2014-11-13 12:56 ` [PATCH v9 7/9] drm: bridge/dw_hdmi: convert dw-hdmi to drm_bridge mode Andy Yan
2014-11-13 12:56 ` Andy Yan
2014-11-13 12:56 ` [PATCH v9 8/9] dt-bindings: Add documentation for rockchip dw hdmi Andy Yan
2014-11-13 12:56 ` Andy Yan
2014-11-13 12:57 ` [PATCH v9 9/9] drm: bridge/dw_hdmi: add rockchip rk3288 support Andy Yan
2014-11-13 12:57 ` Andy Yan
2014-11-13 13:09 ` Zubair Lutfullah Kakakhel
2014-11-13 13:09 ` Zubair Lutfullah Kakakhel
2014-11-13 13:38 ` Andy Yan
2014-11-13 13:38 ` Andy Yan
2014-11-17 10:53 ` [PATCH v12 0/11] dw-hdmi: convert imx hdmi to bridge/dw_hdmi Andy Yan
2014-11-17 10:53 ` Andy Yan
2014-11-24 14:17 ` Andy Yan
2014-11-24 14:17 ` Andy Yan
2014-11-24 14:22 ` Zubair Lutfullah Kakakhel
2014-11-24 14:22 ` Zubair Lutfullah Kakakhel
2014-11-24 14:35 ` Andy Yan
2014-11-24 14:35 ` Andy Yan
2014-11-26 2:14 ` Fabio Estevam
2014-11-26 2:14 ` Fabio Estevam
2014-11-26 2:29 ` Andy Yan
2014-11-26 2:29 ` Andy Yan
2014-11-17 10:54 ` [PATCH v12 01/11] staging: imx-drm: imx-hdmi: make checkpatch happy Andy Yan
2014-11-17 10:54 ` Andy Yan
2014-11-17 10:55 ` [PATCH v12 02/11] staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter Andy Yan
2014-11-17 10:55 ` Andy Yan
2014-11-17 10:55 ` [PATCH v12 03/11] staging: imx-drm: imx-hdmi: convert imx-hdmi to drm_bridge mode Andy Yan
2014-11-17 10:55 ` Andy Yan
2014-11-17 10:56 ` [PATCH v12 04/11] staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw_hdmi Andy Yan
2014-11-17 10:56 ` Andy Yan
2014-11-17 10:56 ` [PATCH v12 05/11] dt-bindings: add document for dw_hdmi Andy Yan
2014-11-17 10:56 ` Andy Yan
2014-11-17 10:56 ` [PATCH v12 06/11] drm: bridge/dw_hdmi: add support for multi-byte register width access Andy Yan
2014-11-17 10:56 ` Andy Yan
2014-11-17 10:57 ` [PATCH v12 07/11] drm: bridge/dw_hdmi: add mode_valid support Andy Yan
2014-11-17 10:57 ` Andy Yan
2014-11-17 10:57 ` [PATCH v12 08/11] drm: bridge/dw_hdmi: clear i2cmphy_stat0 reg in hdmi_phy_wait_i2c_done Andy Yan
2014-11-17 10:57 ` Andy Yan
2014-11-17 10:58 ` [PATCH v12 09/11] drm: bridge/dw_hdmi: add function dw_hdmi_phy_enable_spare Andy Yan
2014-11-17 10:58 ` Andy Yan
2014-11-17 10:58 ` [PATCH v12 10/11] dt-bindings: Add documentation for rockchip dw hdmi Andy Yan
2014-11-17 10:58 ` Andy Yan
2014-11-17 10:59 ` [PATCH v12 11/11] drm: bridge/dw_hdmi: add rockchip rk3288 support Andy Yan
2014-11-17 10:59 ` Andy Yan
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