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path: root/drivers/usb/host/ehci-hcd.c
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2010-06-29EHCI: zero out QH transfer overlay in ehci_submit_async()Sergei Shtylyov
ehci_submit_async() doesn't really zero out the QH transfer overlay (as the EHCI specification suggests) which leads to the controller seeing the "token" field as the previous call has left it, i.e.: - if a timeout occured on the previous call (Active bit left as 1), controller incorrectly tries to complete a previous transaction on a newly programmed endpoint; - if a halt occured on the previous call (Halted bit set to 1), controller just ignores the newly programmed TD(s) and the function then keeps returning error ad infinitum. This turned out to be caused by the wrong orger of the arguments to the memset() call in ehci_alloc(), so the allocated TDs weren't cleared either. While at it, stop needlessly initializing the alternate next TD pointer in the QH transfer overlay... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Acked-by: Remy Bohmer <linux@bohmer.net>
2010-04-08EHCI: fix port reset reportingSergei Shtylyov
Commit b416191a14770c6bcc6fd67be7decf8159b2baee (Fix EHCI port reset.) didn't move the code that checked for successful clearing of the port reset bit from ehci_submit_root(), relying on wait_ms() call instead. The mentioned code also erroneously reported port reset state when the reset was already completed. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
2010-04-08EHCI: fix off-by-one error in ehci_submit_root()Sergei Shtylyov
USB devices on the 2nd port are not detected and I get the following message: The request port(1) is not configured That's with default CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS value of 2. 'req->index' is 1-based, so the comparison in ehci_submit_root() can't be correct. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
2010-04-08EHCI: fix root hub device descriptorSergei Shtylyov
On little endian machines, EHCI root hub's USB revision is reported as 0.2 -- cpu_to_le16() was missed in the initializer for the 'bcdUSB' descriptor field. The same should be done for the 'bcdDevice' field. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
2010-01-09Fix EHCI port reset.Chris Zhang
In USB ehci driver, the port reset is not terminated. EHCI spec says "A host controller must terminate the reset and stabilize the state of the port within 2 milliseconds". Without termination, a port stays at reset state. This is observed on ppc4xx(sequoia) boards. Signed-off-by: Chris Zhang <chris@seamicro.com>
2009-12-20USB Consolidate descriptor definitionsTom Rix
The header files usb.h and usbdescriptors.h have the same nameed structure definitions for usb_config_descriptor usb_interface_descriptor usb_endpoint_descriptor usb_device_descriptor usb_string_descriptor These are out right duplicates in usb.h usb_device_descriptor usb_string_descriptor This one has extra unused elements usb_endpoint_descriptor unsigned char bRefresh unsigned char bSynchAddress; These in usb.h have extra elements at the end of the usb 2.0 specified descriptor and are used. usb_config_descriptor usb_interface_descriptor The change is to consolidate the definition of the descriptors to usbdescriptors.h. The dublicates in usb.h are removed. The extra element structure will have their name shorted by removing the '_descriptor' suffix. So usb_config_descriptor -> usb_config usb_interface_descriptor -> usb_interface For these, the common descriptor elements are accessed now by an element 'desc'. As an example - if (iface->bInterfaceClass != USB_CLASS_HUB) + if (iface->desc.bInterfaceClass != USB_CLASS_HUB) This has been compile tested on MAKEALL arm, ppc and mips. Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
2009-07-23usb: bugfix driver/usb/host/ehci-hcd.c function ehci_submit_rootPrafulla Wadaskar
This change is cheked in Linux source and fix found to be in sync. This patch is tested for USB host interface on Kirkwood based Sheevaplug platform (ARM little endian board) Risk: the impact of this patch is not validated on big endian board. This need to be checked... Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com> Signed-off-by: Remy Bohmer <linux@bohmer.net>
2009-07-11usb: Fix compiler warning with gcc4.4Kumar Gala
ehci-hcd.c: In function 'ehci_submit_root': ehci-hcd.c:719: warning: value computed is not used ehci-hcd.c:748: warning: value computed is not used Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Remy Bohmer <linux@bohmer.net>
2009-04-06drivers/usb: regorganisationJean-Christophe PLAGNIOL-VILLARD
move to linux usb driver organisation as following drivers/usb/gadget drivers/usb/host drivers/usb/musb Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Remy Bohmer <linux@bohmer.net>