drop RPi usb fix as it was fixed upstream differently with commit 723288836628

1 files changed, 0 insertions, 127 deletions

diff --git a/bcm283x-dma-mapping-skip-USB-devices-when-configuring-DMA-during-probe.patch b/bcm283x-dma-mapping-skip-USB-devices-when-configuring-DMA-during-probe.patch
deleted file mode 100644
index c6f7f12de..000000000
--- a/bcm283x-dma-mapping-skip-USB-devices-when-configuring-DMA-during-probe.patch
+++ /dev/null
@@ -1,127 +0,0 @@
-From patchwork Thu Aug  3 15:52:08 2017
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-Subject: [v3] dma-mapping: skip USB devices when configuring DMA during probe
-From: Johan Hovold <johan@kernel.org>
-X-Patchwork-Id: 9879371
-Message-Id: <20170803155208.22165-1-johan@kernel.org>
-To: Christoph Hellwig <hch@lst.de>,
- Marek Szyprowski <m.szyprowski@samsung.com>,
- Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Cc: =?UTF-8?q?Andreas=20F=C3=A4rber?= <afaerber@suse.de>,
- linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
- Alan Stern <stern@rowland.harvard.edu>, Johan Hovold <johan@kernel.org>,
- stable <stable@vger.kernel.org>, Robin Murphy <robin.murphy@arm.com>,
- Sricharan R <sricharan@codeaurora.org>,
- Stefan Wahren <stefan.wahren@i2se.com>
-Date: Thu,  3 Aug 2017 17:52:08 +0200
-
-USB devices use the DMA mask and offset of the controller, which have
-already been setup when a device is probed. Note that modifying the
-DMA mask of a USB device would change the mask for the controller (and
-all devices on the bus) as the mask is literally shared.
-
-Since commit 2bf698671205 ("USB: of: fix root-hub device-tree node
-handling"), of_dma_configure() would be called also for root hubs, which
-use the device node of the controller. A separate, long-standing bug
-that makes of_dma_configure() generate a 30-bit DMA mask from the RPI3's
-"dma-ranges" would thus set a broken mask also for the controller. This
-in turn prevents USB devices from enumerating when control transfers
-fail:
-
-	dwc2 3f980000.usb: Cannot do DMA to address 0x000000003a166a00
-
-Note that the aforementioned DMA-mask bug was benign for the HCD itself
-as the dwc2 driver overwrites the mask previously set by
-of_dma_configure() for the platform device in its probe callback. The
-mask would only later get corrupted when the root-hub child device was
-probed.
-
-Fix this, and similar future problems, by adding a flag to struct device
-which prevents driver core from calling dma_configure() during probe and
-making sure it is set for USB devices.
-
-Fixes: 09515ef5ddad ("of/acpi: Configure dma operations at probe time for platform/amba/pci bus devices")
-Cc: stable <stable@vger.kernel.org>	# 4.12
-Cc: Robin Murphy <robin.murphy@arm.com>
-Cc: Sricharan R <sricharan@codeaurora.org>
-Cc: Stefan Wahren <stefan.wahren@i2se.com>
-Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
-Signed-off-by: Johan Hovold <johan@kernel.org>
----
-
-v3
- - add flag to struct device to prevent DMA configuration during probe instead
-   of checking for the USB bus type, which is not available when USB is built
-   as a module as noted by Alan
- - drop moderated rpi list from CC
-
-v2
- - amend commit message and point out that the long-standing 30-bit DMA-mask
-   bug was benign to the dwc2 HCD itself (Robin)
- - add and use a new dev_is_usb() helper (Robin)
-
-
- drivers/base/dma-mapping.c | 6 ++++++
- drivers/usb/core/usb.c     | 1 +
- include/linux/device.h     | 3 +++
- 3 files changed, 10 insertions(+)
-
-diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
-index b555ff9dd8fc..f9f703be0ad1 100644
---- a/drivers/base/dma-mapping.c
-+++ b/drivers/base/dma-mapping.c
-@@ -345,6 +345,9 @@ int dma_configure(struct device *dev)
- 	enum dev_dma_attr attr;
- 	int ret = 0;
- 
-+	if (dev->skip_dma_configure)
-+		return 0;
-+
- 	if (dev_is_pci(dev)) {
- 		bridge = pci_get_host_bridge_device(to_pci_dev(dev));
- 		dma_dev = bridge;
-@@ -369,6 +372,9 @@ int dma_configure(struct device *dev)
- 
- void dma_deconfigure(struct device *dev)
- {
-+	if (dev->skip_dma_configure)
-+		return;
-+
- 	of_dma_deconfigure(dev);
- 	acpi_dma_deconfigure(dev);
- }
-diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
-index 17681d5638ac..2a85d905b539 100644
---- a/drivers/usb/core/usb.c
-+++ b/drivers/usb/core/usb.c
-@@ -588,6 +588,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
- 	 * Note: calling dma_set_mask() on a USB device would set the
- 	 * mask for the entire HCD, so don't do that.
- 	 */
-+	dev->dev.skip_dma_configure = true;
- 	dev->dev.dma_mask = bus->sysdev->dma_mask;
- 	dev->dev.dma_pfn_offset = bus->sysdev->dma_pfn_offset;
- 	set_dev_node(&dev->dev, dev_to_node(bus->sysdev));
-diff --git a/include/linux/device.h b/include/linux/device.h
-index 723cd54b94da..022cf258068b 100644
---- a/include/linux/device.h
-+++ b/include/linux/device.h
-@@ -877,6 +877,8 @@ struct dev_links_info {
-  * @offline:	Set after successful invocation of bus type's .offline().
-  * @of_node_reused: Set if the device-tree node is shared with an ancestor
-  *              device.
-+ * @skip_dma_configure: Set if driver core should not configure DMA for this
-+ *              device during probe.
-  *
-  * At the lowest level, every device in a Linux system is represented by an
-  * instance of struct device. The device structure contains the information
-@@ -965,6 +967,7 @@ struct device {
- 	bool			offline_disabled:1;
- 	bool			offline:1;
- 	bool			of_node_reused:1;
-+	bool			skip_dma_configure:1;
- };
- 
- static inline struct device *kobj_to_dev(struct kobject *kobj)