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From: Sricharan R <sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: robin.murphy-5wv7dgnIgG8@public.gmane.org,
	will.deacon-5wv7dgnIgG8@public.gmane.org,
	joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
	lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
	bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
	linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	tn-nYOzD4b6Jr9Wk0Htik3J/w@public.gmane.org,
	hanjun.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	okaya-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	sudeep.holla-5wv7dgnIgG8@public.gmane.org,
	rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org,
	lenb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	catalin.marinas-5wv7dgnIgG8@public.gmane.org,
	arnd-r2nGTMty4D4@public.gmane.org,
	linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org
Subject: [PATCH] iommu: of: Fix check for returning EPROBE_DEFER
Date: Tue, 16 May 2017 10:54:13 +0530	[thread overview]
Message-ID: <1494912253-25957-1-git-send-email-sricharan@codeaurora.org> (raw)

While returning EPROBE_DEFER for iommu masters
take in to account of iommu nodes that could be
marked in DT as 'status=disabled', in which case
simply return NULL and let the master's probe
continue rather than deferring.

Signed-off-by: Sricharan R <sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Tested-by: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
Acked-by: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
---
 drivers/iommu/of_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 9f44ee8..e6e9bec 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -118,6 +118,7 @@ static bool of_iommu_driver_present(struct device_node *np)
 
 	ops = iommu_ops_from_fwnode(fwnode);
 	if ((ops && !ops->of_xlate) ||
+	    !of_device_is_available(iommu_spec->np) ||
 	    (!ops && !of_iommu_driver_present(iommu_spec->np)))
 		return NULL;
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

WARNING: multiple messages have this Message-ID (diff)
From: Sricharan R <sricharan@codeaurora.org>
To: robin.murphy@arm.com, will.deacon@arm.com, joro@8bytes.org,
	lorenzo.pieralisi@arm.com, iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, m.szyprowski@samsung.com,
	bhelgaas@google.com, linux-pci@vger.kernel.org,
	linux-acpi@vger.kernel.org, tn@semihalf.com,
	hanjun.guo@linaro.org, okaya@codeaurora.org, robh+dt@kernel.org,
	frowand.list@gmail.com, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, sudeep.holla@arm.com,
	rjw@rjwysocki.net, lenb@kernel.org, catalin.marinas@arm.com,
	arnd@arndb.de, linux-arch@vger.kernel.org,
	gregkh@linuxfoundation.org
Cc: sricharan@codeaurora.org
Subject: [PATCH] iommu: of: Fix check for returning EPROBE_DEFER
Date: Tue, 16 May 2017 10:54:13 +0530	[thread overview]
Message-ID: <1494912253-25957-1-git-send-email-sricharan@codeaurora.org> (raw)

While returning EPROBE_DEFER for iommu masters
take in to account of iommu nodes that could be
marked in DT as 'status=disabled', in which case
simply return NULL and let the master's probe
continue rather than deferring.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
---
 drivers/iommu/of_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 9f44ee8..e6e9bec 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -118,6 +118,7 @@ static bool of_iommu_driver_present(struct device_node *np)
 
 	ops = iommu_ops_from_fwnode(fwnode);
 	if ((ops && !ops->of_xlate) ||
+	    !of_device_is_available(iommu_spec->np) ||
 	    (!ops && !of_iommu_driver_present(iommu_spec->np)))
 		return NULL;
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

WARNING: multiple messages have this Message-ID (diff)
From: Sricharan R <sricharan@codeaurora.org>
To: robin.murphy@arm.com, will.deacon@arm.com, joro@8bytes.org,
	lorenzo.pieralisi@arm.com, iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, m.szyprowski@samsung.com,
	bhelgaas@google.com, linux-pci@vger.kernel.org,
	linux-acpi@vger.kernel.org, tn@semihalf.com,
	hanjun.guo@linaro.org, okaya@codeaurora.org, robh+dt@kernel.org,
	frowand.list@gmail.com, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, sudeep.holla@arm.com,
	rjw@rjwysocki.net, lenb@kernel.org, catalin.marinas@arm.com,
	arnd@arndb.de, linux-arch@vger.kernel.org,
	gregkh@linuxfoundation.org
Cc: sricharan@codeaurora.org
Subject: [PATCH] iommu: of: Fix check for returning EPROBE_DEFER
Date: Tue, 16 May 2017 10:54:13 +0530	[thread overview]
Message-ID: <1494912253-25957-1-git-send-email-sricharan@codeaurora.org> (raw)

While returning EPROBE_DEFER for iommu masters
take in to account of iommu nodes that could be
marked in DT as 'status=disabled', in which case
simply return NULL and let the master's probe
continue rather than deferring.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
---
 drivers/iommu/of_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 9f44ee8..e6e9bec 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -118,6 +118,7 @@ static bool of_iommu_driver_present(struct device_node *np)
 
 	ops = iommu_ops_from_fwnode(fwnode);
 	if ((ops && !ops->of_xlate) ||
+	    !of_device_is_available(iommu_spec->np) ||
 	    (!ops && !of_iommu_driver_present(iommu_spec->np)))
 		return NULL;
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: sricharan@codeaurora.org (Sricharan R)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] iommu: of: Fix check for returning EPROBE_DEFER
Date: Tue, 16 May 2017 10:54:13 +0530	[thread overview]
Message-ID: <1494912253-25957-1-git-send-email-sricharan@codeaurora.org> (raw)

While returning EPROBE_DEFER for iommu masters
take in to account of iommu nodes that could be
marked in DT as 'status=disabled', in which case
simply return NULL and let the master's probe
continue rather than deferring.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
---
 drivers/iommu/of_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 9f44ee8..e6e9bec 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -118,6 +118,7 @@ static bool of_iommu_driver_present(struct device_node *np)
 
 	ops = iommu_ops_from_fwnode(fwnode);
 	if ((ops && !ops->of_xlate) ||
+	    !of_device_is_available(iommu_spec->np) ||
 	    (!ops && !of_iommu_driver_present(iommu_spec->np)))
 		return NULL;
 
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

             reply	other threads:[~2017-05-16  5:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-16  5:24 Sricharan R [this message]
2017-05-16  5:24 ` [PATCH] iommu: of: Fix check for returning EPROBE_DEFER Sricharan R
2017-05-16  5:24 ` Sricharan R
2017-05-16  5:24 ` Sricharan R
2017-05-16 14:09 ` Jonathan Neuschäfer
2017-05-16 14:09   ` Jonathan Neuschäfer
2017-05-16 14:09   ` Jonathan Neuschäfer
2017-05-17  5:17   ` Sricharan R
2017-05-17  5:17     ` Sricharan R
2017-05-17  5:17     ` Sricharan R
2017-05-17  5:17     ` Sricharan R

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