kernel/linux.git/drivers/usb/gadget, branch v4.3.1

usb: gadget: atmel_usba_udc: Expose correct device speed

2015-12-09T19:34:35+00:00

commit d134c48d889ddceadf4c990e6f3df16b816ed5d4 upstream. Following changes that appeared in lk 4.0.0, the gadget udc driver for some ARM based Atmel SoCs (e.g. at91sam9x5 and sama5d3 families) incorrectly deduced full-speed USB link speed even when the hardware had negotiated a high-speed link. The fix is to make sure that the UDPHS Interrupt Enable Register value does not mask the SPEED bit in the Interrupt Status Register. For a mass storage gadget this problem lead to failures when the host had a USB 3 port with the xhci_hcd driver. If the host was a USB 2 port using the ehci_hcd driver then the mass storage gadget worked (but probably at a lower speed than it should have). Signed-off-by: Douglas Gilbert Reviewed-by: Boris Brezillon Fixes: 9870d895ad87 ("usb: atmel_usba_udc: Mask status with enabled irqs") Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

usb: gadget: net2280: restore ep_cfg after defect7374 workaround

2015-12-09T19:34:35+00:00

commit 81e9d14a53eb1abfbe6ac828a87a2deb4702b5f1 upstream. Defect 7374 workaround enables all GPEP as endpoint 0. Restore endpoint number when defect 7374 workaround is disabled. Otherwise, check to match USB endpoint number to hardware endpoint number in net2280_enable() fails. Reported-by: Paul Jones Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

usb: gadget: bdc: fix memory leak

2015-09-30T16:20:21+00:00

If dma_pool_alloc() fails we are jumping to fail and releasing all the bd_tables which have been added to the chain but we missed freeing this bd_table which was just allocated and still not added to the chain of bd_table. Signed-off-by: Sudip Mukherjee Signed-off-by: Felipe Balbi

usb: gadget: drop null test before destroy functions

2015-09-21T19:42:36+00:00

Remove unneeded NULL test. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x; @@ -if (x != NULL) \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x); // Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi

usb: gadget: dummy_hcd: in transfer(), return data sent, not limit

2015-09-21T19:42:36+00:00

dummy_timer uses transfer() to update transfer limit. However, limit passed to dummy_timer changes depending on transfer type, so the actual limit is overwritten. This can cause unpredictably slow / fast bulk transfers when coupled with control / interrupt transfers. Fix by returning actual amount of data sent in transfer() and substracting from total. Signed-off-by: Igor Kotrasinski Signed-off-by: Felipe Balbi

usb: gadget: dummy_hcd: fix rescan logic for transfer

2015-09-21T19:42:36+00:00

transfer() schedules a rescan for transfers larger than maxpacket, which is wrong for transfers that are multiples of maxpacket. Rewrite to fix and clarify packet multiple / remainder transfer logic. Signed-off-by: Igor Kotrasinski Signed-off-by: Felipe Balbi

usb: gadget: dummy_hcd: fix unneeded else-if condition

2015-09-21T19:42:35+00:00

We already know at this point that to_host is false. Signed-off-by: Igor Kotrasinski Signed-off-by: Felipe Balbi

usb: gadget: dummy_hcd: emulate sending zlp in packet logic

2015-09-21T19:42:35+00:00

currently, when a zlp flag is set and an urb/usb_request buffer is filled without a short packet, transfer() leaves its status at -EINPROGRESS and does not rescan for short packet. In a scenario where ep.maxpacket bytes are copied, URB_ZERO_PACKET is set, urb buffer is filled and usb_request buffer is not, transfer() returns with an urb with -EINPROGRESS status, which dummy_hcd treats as incomplete transfer. Check for zlp and rescan appropriately. Signed-off-by: Igor Kotrasinski Signed-off-by: Felipe Balbi

usb: gadget: atmel_usba_udc: add ep capabilities support on device tree binding

2015-09-21T19:42:35+00:00

The recently added endpoint capabilities flags verification breaks Atmel USBA because the endpoint configuration was only added when the driver is bound using the legacy pdata interface. Convert endpoint configuration to new capabilities model when driver is bound to a device tree as well. Signed-off-by: Sylvain Rochet Fixes: 47bef3865115 ("usb: gadget: atmel_usba_udc: add ep capabilities support") Signed-off-by: Nicolas Ferre Signed-off-by: Felipe Balbi

usb: gadget: amd5536udc: fix error handling in udc_pci_probe()

2015-09-14T15:14:51+00:00

If a failure happens early in udc_pci_probe(), error handling code just kfree(dev) and returns. The patch adds proper resource deallocations in udc_pci_probe() itself, since udc_pci_remove() is not suitabe to be called so early in initialization process. By the way, iounmap(dev->regs) is replaced by iounmap(dev->virt_addr) in udc_pci_remove() for clarity. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Felipe Balbi