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From: Kirti Wankhede <kwankhede@nvidia.com>
To: Christoph Hellwig <hch@lst.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jason Gunthorpe <jgg@nvidia.com>,
	"Alex Williamson" <alex.williamson@redhat.com>
Cc: David Airlie <airlied@linux.ie>,
	Tony Krowiak <akrowiak@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Cornelia Huck <cohuck@redhat.com>,
	Jonathan Corbet <corbet@lwn.net>, Daniel Vetter <daniel@ffwll.ch>,
	<dri-devel@lists.freedesktop.org>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Heiko Carstens <hca@linux.ibm.com>,
	<intel-gfx@lists.freedesktop.org>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Jason Herne <jjherne@linux.ibm.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	<kvm@vger.kernel.org>, <linux-doc@vger.kernel.org>,
	<linux-s390@vger.kernel.org>, Halil Pasic <pasic@linux.ibm.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: Re: [PATCH 02/10] driver core: Better distinguish probe errors in really_probe
Date: Tue, 15 Jun 2021 00:17:53 +0530	[thread overview]
Message-ID: <8002c963-ce48-ecf8-a209-58195818a160@nvidia.com> (raw)
In-Reply-To: <20210614150846.4111871-3-hch@lst.de>



On 6/14/2021 8:38 PM, Christoph Hellwig wrote:
> really_probe tries to special case errors from ->probe, but due to all
> other initialization added to the function over time now a lot of
> internal errors hit that code path as well.  Untangle that by adding
> a new probe_err local variable and apply the special casing only to
> that.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   drivers/base/dd.c | 72 +++++++++++++++++++++++++++--------------------
>   1 file changed, 41 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/base/dd.c b/drivers/base/dd.c
> index 7477d3322b3a..999bc737a8f0 100644
> --- a/drivers/base/dd.c
> +++ b/drivers/base/dd.c
> @@ -513,12 +513,42 @@ static ssize_t state_synced_show(struct device *dev,
>   }
>   static DEVICE_ATTR_RO(state_synced);
>   
> +
> +static int call_driver_probe(struct device *dev, struct device_driver *drv)
> +{
> +	int ret = 0;
> +
> +	if (dev->bus->probe)
> +		ret = dev->bus->probe(dev);
> +	else if (drv->probe)
> +		ret = drv->probe(dev);
> +
> +	switch (ret) {
> +	case -EPROBE_DEFER:
> +		/* Driver requested deferred probing */
> +		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
> +		break;
> +	case -ENODEV:
> +	case -ENXIO:
> +		pr_debug("%s: probe of %s rejects match %d\n",
> +			 drv->name, dev_name(dev), ret);
> +		break;
> +	default:
> +		/* driver matched but the probe failed */
> +		pr_warn("%s: probe of %s failed with error %d\n",
> +			drv->name, dev_name(dev), ret);

There should be case 0, that is, success case before default case as below:
+	case 0:
+		/* Driver returned success */
+		break;

Otherwise even in case of success, above warning would mislead that 
probe has failed.

Thanks,
Kirti

> +		break;
> +	}
> +
> +	return ret;
> +}
> +
>   static int really_probe(struct device *dev, struct device_driver *drv)
>   {
> -	int ret = -EPROBE_DEFER;
>   	int local_trigger_count = atomic_read(&deferred_trigger_count);
>   	bool test_remove = IS_ENABLED(CONFIG_DEBUG_TEST_DRIVER_REMOVE) &&
>   			   !drv->suppress_bind_attrs;
> +	int ret = -EPROBE_DEFER, probe_ret = 0;
>   
>   	if (defer_all_probes) {
>   		/*
> @@ -572,15 +602,15 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>   			goto probe_failed;
>   	}
>   
> -	if (dev->bus->probe) {
> -		ret = dev->bus->probe(dev);
> -		if (ret)
> -			goto probe_failed;
> -	} else if (drv->probe) {
> -		ret = drv->probe(dev);
> -		if (ret)
> -			goto probe_failed;
> -	}
> +	probe_ret = call_driver_probe(dev, drv);
> +	if (probe_ret) {
> +		/*
> +		 * Ignore errors returned by ->probe so that the next driver can
> +		 * try its luck.
> +		   */
> +		ret = 0;
> +		goto probe_failed;
> +	}
>   
>   	if (device_add_groups(dev, drv->dev_groups)) {
>   		dev_err(dev, "device_add_groups() failed\n");
> @@ -650,28 +680,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>   		dev->pm_domain->dismiss(dev);
>   	pm_runtime_reinit(dev);
>   	dev_pm_set_driver_flags(dev, 0);
> -
> -	switch (ret) {
> -	case -EPROBE_DEFER:
> -		/* Driver requested deferred probing */
> -		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
> +	if (probe_ret == -EPROBE_DEFER)
>   		driver_deferred_probe_add_trigger(dev, local_trigger_count);
> -		break;
> -	case -ENODEV:
> -	case -ENXIO:
> -		pr_debug("%s: probe of %s rejects match %d\n",
> -			 drv->name, dev_name(dev), ret);
> -		break;
> -	default:
> -		/* driver matched but the probe failed */
> -		pr_warn("%s: probe of %s failed with error %d\n",
> -			drv->name, dev_name(dev), ret);
> -	}
> -	/*
> -	 * Ignore errors returned by ->probe so that the next driver can try
> -	 * its luck.
> -	 */
> -	ret = 0;
>   done:
>   	atomic_dec(&probe_count);
>   	wake_up_all(&probe_waitqueue);
> 

WARNING: multiple messages have this Message-ID
From: Kirti Wankhede <kwankhede@nvidia.com>
To: Christoph Hellwig <hch@lst.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jason Gunthorpe <jgg@nvidia.com>,
	"Alex Williamson" <alex.williamson@redhat.com>
Cc: Tony Krowiak <akrowiak@linux.ibm.com>,
	Jason Herne <jjherne@linux.ibm.com>,
	kvm@vger.kernel.org, Vasily Gorbik <gor@linux.ibm.com>,
	Jonathan Corbet <corbet@lwn.net>, David Airlie <airlied@linux.ie>,
	linux-s390@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
	Cornelia Huck <cohuck@redhat.com>,
	linux-doc@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Halil Pasic <pasic@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 02/10] driver core: Better distinguish probe errors in really_probe
Date: Tue, 15 Jun 2021 00:17:53 +0530	[thread overview]
Message-ID: <8002c963-ce48-ecf8-a209-58195818a160@nvidia.com> (raw)
In-Reply-To: <20210614150846.4111871-3-hch@lst.de>



On 6/14/2021 8:38 PM, Christoph Hellwig wrote:
> really_probe tries to special case errors from ->probe, but due to all
> other initialization added to the function over time now a lot of
> internal errors hit that code path as well.  Untangle that by adding
> a new probe_err local variable and apply the special casing only to
> that.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   drivers/base/dd.c | 72 +++++++++++++++++++++++++++--------------------
>   1 file changed, 41 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/base/dd.c b/drivers/base/dd.c
> index 7477d3322b3a..999bc737a8f0 100644
> --- a/drivers/base/dd.c
> +++ b/drivers/base/dd.c
> @@ -513,12 +513,42 @@ static ssize_t state_synced_show(struct device *dev,
>   }
>   static DEVICE_ATTR_RO(state_synced);
>   
> +
> +static int call_driver_probe(struct device *dev, struct device_driver *drv)
> +{
> +	int ret = 0;
> +
> +	if (dev->bus->probe)
> +		ret = dev->bus->probe(dev);
> +	else if (drv->probe)
> +		ret = drv->probe(dev);
> +
> +	switch (ret) {
> +	case -EPROBE_DEFER:
> +		/* Driver requested deferred probing */
> +		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
> +		break;
> +	case -ENODEV:
> +	case -ENXIO:
> +		pr_debug("%s: probe of %s rejects match %d\n",
> +			 drv->name, dev_name(dev), ret);
> +		break;
> +	default:
> +		/* driver matched but the probe failed */
> +		pr_warn("%s: probe of %s failed with error %d\n",
> +			drv->name, dev_name(dev), ret);

There should be case 0, that is, success case before default case as below:
+	case 0:
+		/* Driver returned success */
+		break;

Otherwise even in case of success, above warning would mislead that 
probe has failed.

Thanks,
Kirti

> +		break;
> +	}
> +
> +	return ret;
> +}
> +
>   static int really_probe(struct device *dev, struct device_driver *drv)
>   {
> -	int ret = -EPROBE_DEFER;
>   	int local_trigger_count = atomic_read(&deferred_trigger_count);
>   	bool test_remove = IS_ENABLED(CONFIG_DEBUG_TEST_DRIVER_REMOVE) &&
>   			   !drv->suppress_bind_attrs;
> +	int ret = -EPROBE_DEFER, probe_ret = 0;
>   
>   	if (defer_all_probes) {
>   		/*
> @@ -572,15 +602,15 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>   			goto probe_failed;
>   	}
>   
> -	if (dev->bus->probe) {
> -		ret = dev->bus->probe(dev);
> -		if (ret)
> -			goto probe_failed;
> -	} else if (drv->probe) {
> -		ret = drv->probe(dev);
> -		if (ret)
> -			goto probe_failed;
> -	}
> +	probe_ret = call_driver_probe(dev, drv);
> +	if (probe_ret) {
> +		/*
> +		 * Ignore errors returned by ->probe so that the next driver can
> +		 * try its luck.
> +		   */
> +		ret = 0;
> +		goto probe_failed;
> +	}
>   
>   	if (device_add_groups(dev, drv->dev_groups)) {
>   		dev_err(dev, "device_add_groups() failed\n");
> @@ -650,28 +680,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>   		dev->pm_domain->dismiss(dev);
>   	pm_runtime_reinit(dev);
>   	dev_pm_set_driver_flags(dev, 0);
> -
> -	switch (ret) {
> -	case -EPROBE_DEFER:
> -		/* Driver requested deferred probing */
> -		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
> +	if (probe_ret == -EPROBE_DEFER)
>   		driver_deferred_probe_add_trigger(dev, local_trigger_count);
> -		break;
> -	case -ENODEV:
> -	case -ENXIO:
> -		pr_debug("%s: probe of %s rejects match %d\n",
> -			 drv->name, dev_name(dev), ret);
> -		break;
> -	default:
> -		/* driver matched but the probe failed */
> -		pr_warn("%s: probe of %s failed with error %d\n",
> -			drv->name, dev_name(dev), ret);
> -	}
> -	/*
> -	 * Ignore errors returned by ->probe so that the next driver can try
> -	 * its luck.
> -	 */
> -	ret = 0;
>   done:
>   	atomic_dec(&probe_count);
>   	wake_up_all(&probe_waitqueue);
> 

WARNING: multiple messages have this Message-ID
From: Kirti Wankhede <kwankhede@nvidia.com>
To: Christoph Hellwig <hch@lst.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jason Gunthorpe <jgg@nvidia.com>,
	"Alex Williamson" <alex.williamson@redhat.com>
Cc: Tony Krowiak <akrowiak@linux.ibm.com>,
	Jason Herne <jjherne@linux.ibm.com>,
	kvm@vger.kernel.org, Vasily Gorbik <gor@linux.ibm.com>,
	Jonathan Corbet <corbet@lwn.net>, David Airlie <airlied@linux.ie>,
	linux-s390@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
	Cornelia Huck <cohuck@redhat.com>,
	linux-doc@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Halil Pasic <pasic@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 02/10] driver core: Better distinguish probe errors in really_probe
Date: Tue, 15 Jun 2021 00:17:53 +0530	[thread overview]
Message-ID: <8002c963-ce48-ecf8-a209-58195818a160@nvidia.com> (raw)
In-Reply-To: <20210614150846.4111871-3-hch@lst.de>



On 6/14/2021 8:38 PM, Christoph Hellwig wrote:
> really_probe tries to special case errors from ->probe, but due to all
> other initialization added to the function over time now a lot of
> internal errors hit that code path as well.  Untangle that by adding
> a new probe_err local variable and apply the special casing only to
> that.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   drivers/base/dd.c | 72 +++++++++++++++++++++++++++--------------------
>   1 file changed, 41 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/base/dd.c b/drivers/base/dd.c
> index 7477d3322b3a..999bc737a8f0 100644
> --- a/drivers/base/dd.c
> +++ b/drivers/base/dd.c
> @@ -513,12 +513,42 @@ static ssize_t state_synced_show(struct device *dev,
>   }
>   static DEVICE_ATTR_RO(state_synced);
>   
> +
> +static int call_driver_probe(struct device *dev, struct device_driver *drv)
> +{
> +	int ret = 0;
> +
> +	if (dev->bus->probe)
> +		ret = dev->bus->probe(dev);
> +	else if (drv->probe)
> +		ret = drv->probe(dev);
> +
> +	switch (ret) {
> +	case -EPROBE_DEFER:
> +		/* Driver requested deferred probing */
> +		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
> +		break;
> +	case -ENODEV:
> +	case -ENXIO:
> +		pr_debug("%s: probe of %s rejects match %d\n",
> +			 drv->name, dev_name(dev), ret);
> +		break;
> +	default:
> +		/* driver matched but the probe failed */
> +		pr_warn("%s: probe of %s failed with error %d\n",
> +			drv->name, dev_name(dev), ret);

There should be case 0, that is, success case before default case as below:
+	case 0:
+		/* Driver returned success */
+		break;

Otherwise even in case of success, above warning would mislead that 
probe has failed.

Thanks,
Kirti

> +		break;
> +	}
> +
> +	return ret;
> +}
> +
>   static int really_probe(struct device *dev, struct device_driver *drv)
>   {
> -	int ret = -EPROBE_DEFER;
>   	int local_trigger_count = atomic_read(&deferred_trigger_count);
>   	bool test_remove = IS_ENABLED(CONFIG_DEBUG_TEST_DRIVER_REMOVE) &&
>   			   !drv->suppress_bind_attrs;
> +	int ret = -EPROBE_DEFER, probe_ret = 0;
>   
>   	if (defer_all_probes) {
>   		/*
> @@ -572,15 +602,15 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>   			goto probe_failed;
>   	}
>   
> -	if (dev->bus->probe) {
> -		ret = dev->bus->probe(dev);
> -		if (ret)
> -			goto probe_failed;
> -	} else if (drv->probe) {
> -		ret = drv->probe(dev);
> -		if (ret)
> -			goto probe_failed;
> -	}
> +	probe_ret = call_driver_probe(dev, drv);
> +	if (probe_ret) {
> +		/*
> +		 * Ignore errors returned by ->probe so that the next driver can
> +		 * try its luck.
> +		   */
> +		ret = 0;
> +		goto probe_failed;
> +	}
>   
>   	if (device_add_groups(dev, drv->dev_groups)) {
>   		dev_err(dev, "device_add_groups() failed\n");
> @@ -650,28 +680,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
>   		dev->pm_domain->dismiss(dev);
>   	pm_runtime_reinit(dev);
>   	dev_pm_set_driver_flags(dev, 0);
> -
> -	switch (ret) {
> -	case -EPROBE_DEFER:
> -		/* Driver requested deferred probing */
> -		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
> +	if (probe_ret == -EPROBE_DEFER)
>   		driver_deferred_probe_add_trigger(dev, local_trigger_count);
> -		break;
> -	case -ENODEV:
> -	case -ENXIO:
> -		pr_debug("%s: probe of %s rejects match %d\n",
> -			 drv->name, dev_name(dev), ret);
> -		break;
> -	default:
> -		/* driver matched but the probe failed */
> -		pr_warn("%s: probe of %s failed with error %d\n",
> -			drv->name, dev_name(dev), ret);
> -	}
> -	/*
> -	 * Ignore errors returned by ->probe so that the next driver can try
> -	 * its luck.
> -	 */
> -	ret = 0;
>   done:
>   	atomic_dec(&probe_count);
>   	wake_up_all(&probe_waitqueue);
> 
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2021-06-14 18:48 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 15:08 Allow mdev drivers to directly create the vfio_device (v2 / alternative) Christoph Hellwig
2021-06-14 15:08 ` [Intel-gfx] " Christoph Hellwig
2021-06-14 15:08 ` [PATCH 01/10] driver core: Pull required checks into driver_probe_device() Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-15  5:16   ` Greg Kroah-Hartman
2021-06-15  5:16     ` [Intel-gfx] " Greg Kroah-Hartman
2021-06-15  5:16     ` Greg Kroah-Hartman
2021-06-15 10:27   ` Cornelia Huck
2021-06-15 10:27     ` [Intel-gfx] " Cornelia Huck
2021-06-15 10:27     ` Cornelia Huck
2021-06-14 15:08 ` [PATCH 02/10] driver core: Better distinguish probe errors in really_probe Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-14 18:47   ` Kirti Wankhede [this message]
2021-06-14 18:47     ` Kirti Wankhede
2021-06-14 18:47     ` Kirti Wankhede
2021-06-15  5:17   ` Greg Kroah-Hartman
2021-06-15  5:17     ` [Intel-gfx] " Greg Kroah-Hartman
2021-06-15  5:17     ` Greg Kroah-Hartman
2021-06-15  5:48     ` Christoph Hellwig
2021-06-15  5:48       ` [Intel-gfx] " Christoph Hellwig
2021-06-14 15:08 ` [PATCH 03/10] driver core: Flow the return code from ->probe() through to sysfs bind Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-15  5:18   ` Greg Kroah-Hartman
2021-06-15  5:18     ` [Intel-gfx] " Greg Kroah-Hartman
2021-06-15  5:18     ` Greg Kroah-Hartman
2021-06-15 10:31   ` Cornelia Huck
2021-06-15 10:31     ` [Intel-gfx] " Cornelia Huck
2021-06-15 10:31     ` Cornelia Huck
2021-06-14 15:08 ` [PATCH 04/10] driver core: Don't return EPROBE_DEFER to userspace during " Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-14 22:43   ` Jason Gunthorpe
2021-06-14 22:43     ` [Intel-gfx] " Jason Gunthorpe
2021-06-14 22:43     ` Jason Gunthorpe
2021-06-14 15:08 ` [PATCH 05/10] driver core: Export device_driver_attach() Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-15  5:20   ` Greg Kroah-Hartman
2021-06-15  5:20     ` [Intel-gfx] " Greg Kroah-Hartman
2021-06-15  5:20     ` Greg Kroah-Hartman
2021-06-15 10:49   ` Cornelia Huck
2021-06-15 10:49     ` [Intel-gfx] " Cornelia Huck
2021-06-15 10:49     ` Cornelia Huck
2021-06-14 15:08 ` [PATCH 06/10] vfio/mdev: Remove CONFIG_VFIO_MDEV_DEVICE Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-15 10:50   ` Cornelia Huck
2021-06-15 10:50     ` [Intel-gfx] " Cornelia Huck
2021-06-15 10:50     ` Cornelia Huck
2021-06-14 15:08 ` [PATCH 07/10] vfio/mdev: Allow the mdev_parent_ops to specify the device driver to bind Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-15 10:54   ` Cornelia Huck
2021-06-15 10:54     ` [Intel-gfx] " Cornelia Huck
2021-06-15 10:54     ` Cornelia Huck
2021-06-14 15:08 ` [PATCH 08/10] vfio/mtty: Convert to use vfio_register_group_dev() Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-14 15:08 ` [PATCH 09/10] vfio/mdpy: " Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-14 15:08 ` [PATCH 10/10] vfio/mbochs: " Christoph Hellwig
2021-06-14 15:08   ` [Intel-gfx] " Christoph Hellwig
2021-06-15  0:20 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/10] driver core: Pull required checks into driver_probe_device() Patchwork
2021-06-15  0:23 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-06-15  0:49 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-06-15  5:21 ` Allow mdev drivers to directly create the vfio_device (v2 / alternative) Greg Kroah-Hartman
2021-06-15  5:21   ` [Intel-gfx] " Greg Kroah-Hartman
2021-06-15  5:21   ` Greg Kroah-Hartman
2021-06-15  5:50   ` Christoph Hellwig
2021-06-15  5:50     ` [Intel-gfx] " Christoph Hellwig
2021-06-15 15:27     ` Jason Gunthorpe
2021-06-15 15:27       ` [Intel-gfx] " Jason Gunthorpe
2021-06-15 15:27       ` Jason Gunthorpe
2021-06-15  9:37 ` [Intel-gfx] ✓ Fi.CI.IGT: success for series starting with [01/10] driver core: Pull required checks into driver_probe_device() Patchwork
2021-06-15 13:35 Allow mdev drivers to directly create the vfio_device (v3) Christoph Hellwig
2021-06-15 13:35 ` [PATCH 02/10] driver core: Better distinguish probe errors in really_probe Christoph Hellwig
2021-06-15 13:53   ` Cornelia Huck
2021-06-15 13:53     ` Cornelia Huck
2021-06-15 14:09     ` Greg Kroah-Hartman
2021-06-15 14:09       ` Greg Kroah-Hartman
2021-06-15 14:09   ` Greg Kroah-Hartman
2021-06-15 14:09     ` Greg Kroah-Hartman
2021-06-16 20:20   ` Kirti Wankhede
2021-06-16 20:20     ` Kirti Wankhede
2021-06-17 14:22 Allow mdev drivers to directly create the vfio_device (v4) Christoph Hellwig
2021-06-17 14:22 ` [PATCH 02/10] driver core: Better distinguish probe errors in really_probe Christoph Hellwig

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