From: sricharan@codeaurora.org (Sricharan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V5 05/12] drivers: platform: Configure dma operations at probe time
Date: Fri, 20 Jan 2017 11:04:19 +0530 [thread overview]
Message-ID: <000201d272de$dc6d1c10$95475430$@codeaurora.org> (raw)
In-Reply-To: <20170119164821.GB28483@red-moon>
Hi Lorenzo,
>-----Original Message-----
>From: Lorenzo Pieralisi [mailto:lorenzo.pieralisi at arm.com]
>Sent: Thursday, January 19, 2017 10:18 PM
>To: Sricharan R <sricharan@codeaurora.org>
>Cc: robin.murphy at arm.com; will.deacon at arm.com; joro at 8bytes.org; iommu at lists.linux-foundation.org; linux-arm-
>kernel at lists.infradead.org; linux-arm-msm at vger.kernel.org; m.szyprowski at samsung.com
>Subject: Re: [PATCH V5 05/12] drivers: platform: Configure dma operations at probe time
>
>On Thu, Jan 19, 2017 at 08:35:49PM +0530, Sricharan R wrote:
>> Configuring DMA ops at probe time will allow deferring device probe when
>> the IOMMU isn't available yet. The dma_configure for the device is
>> now called from the generic device_attach callback just before the
>> bus/driver probe is called. This way, configuring the DMA ops for the
>> device would be called at the same place for all bus_types, hence the
>> deferred probing mechanism should work for all buses as well.
>>
>> pci_bus_add_devices (platform/amba)(_device_create/driver_register)
>> | |
>> pci_bus_add_device (device_add/driver_register)
>> | |
>> device_attach device_initial_probe
>> | |
>> __device_attach_driver __device_attach_driver
>> |
>> driver_probe_device
>> |
>> really_probe
>> |
>> dma_configure
>>
>> Similarly on the device/driver_unregister path __device_release_driver is
>> called which inturn calls dma_deconfigure.
>>
>> Signed-off-by: Sricharan R <sricharan@codeaurora.org>
>> ---
>> * Removed the dma configuration for the pci devices in case of DT
>> from pci_dma_configure which was hanging outside separately and
>> doing it in dma_configure function itself.
>
>Rename the patch subject then, it is misleading.
Ha, infact the patch still does what it says. The above words were
to mention what was changed from V4 to V5. Sorry i should have
mentioned that explicitly.
Regards,
Sricharan
next prev parent reply other threads:[~2017-01-20 5:34 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-19 15:05 [PATCH V5 00/12] IOMMU probe deferral support Sricharan R
2017-01-19 15:05 ` [PATCH V5 01/12] iommu/of: Refactor of_iommu_configure() for error handling Sricharan R
2017-01-19 15:05 ` [PATCH V5 02/12] iommu/of: Prepare for deferred IOMMU configuration Sricharan R
2017-01-19 15:05 ` [PATCH V5 03/12] of: dma: Move range size workaround to of_dma_get_range() Sricharan R
2017-01-19 15:05 ` [PATCH V5 04/12] of: dma: Make of_dma_deconfigure() public Sricharan R
2017-01-19 15:05 ` [PATCH V5 05/12] drivers: platform: Configure dma operations at probe time Sricharan R
2017-01-19 16:48 ` Lorenzo Pieralisi
2017-01-20 5:34 ` Sricharan [this message]
2017-01-19 17:49 ` Robin Murphy
2017-01-19 19:02 ` Lorenzo Pieralisi
2017-01-20 6:25 ` Sricharan
2017-01-20 6:18 ` Sricharan
2017-01-19 15:05 ` [PATCH V5 06/12] iommu: of: Handle IOMMU lookup failure with deferred probing or error Sricharan R
2017-01-19 15:05 ` [PATCH V5 07/12] arm64: dma-mapping: Remove the notifier trick to handle early setting of dma_ops Sricharan R
2017-01-19 16:20 ` Will Deacon
2017-01-19 15:05 ` [PATCH V5 08/12] iommu/arm-smmu: Clean up early-probing workarounds Sricharan R
2017-01-19 16:18 ` Will Deacon
2017-01-20 19:20 ` Sricharan
2017-01-19 16:50 ` Lorenzo Pieralisi
2017-01-19 17:58 ` Robin Murphy
2017-01-20 6:32 ` Sricharan
2017-01-19 15:05 ` [PATCH V5 09/12] ACPI/IORT: Add function to check SMMUs drivers presence Sricharan R
2017-01-19 15:05 ` [PATCH V5 10/12] drivers: acpi: Configure acpi devices dma operation at probe time Sricharan R
2017-01-19 16:42 ` Lorenzo Pieralisi
2017-01-20 5:31 ` Sricharan
2017-01-19 15:05 ` [PATCH V5 11/12] drivers: acpi: Handle IOMMU lookup failure with deferred probing or error Sricharan R
2017-01-19 15:05 ` [PATCH V5 12/12] ACPI/IORT: Remove linker section for IORT entries probing Sricharan R
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