50a0ffaf75
The NCM class match in the cdc_mbim driver is confusing and cause unexpected behaviour. The USB core guarantees that a USB interface is in altsetting 0 when probing starts. This means that devices implementing a NCM 1.0 backwards compatible MBIM function (a "NCM/MBIM function") always hit the NCM entry in the cdc_mbim driver match table. Such functions will never match any of the MBIM entries. This causes unexpeced behaviour for cases where the NCM and MBIM entries are differet, which is currently the case for all except Ericsson devices. Improve the probing of NCM/MBIM functions by looking up the device again in the cdc_mbim match table after switching to the MBIM identity. The shared altsetting selection is updated to better accommodate the new probing logic, returning the preferred altsetting for the control interface instead of the data interface. The control interface altsetting update is moved to the cdc_mbim driver. It is never necessary to change the control interface altsetting for NCM. Cc: Greg Suarez <gsuarez@smithmicro.com> Reported by: Yu-an Shih <yshih@nvidia.com> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| association.h | ||
| atmel_usba_udc.h | ||
| audio-v2.h | ||
| audio.h | ||
| c67x00.h | ||
| cdc-wdm.h | ||
| cdc_ncm.h | ||
| ch9.h | ||
| chipidea.h | ||
| composite.h | ||
| ehci_def.h | ||
| ehci_pdriver.h | ||
| ezusb.h | ||
| functionfs.h | ||
| g_hid.h | ||
| gadget.h | ||
| gadget_configfs.h | ||
| gpio_vbus.h | ||
| hcd.h | ||
| input.h | ||
| iowarrior.h | ||
| irda.h | ||
| isp116x.h | ||
| isp1301.h | ||
| isp1362.h | ||
| isp1760.h | ||
| m66592.h | ||
| msm_hsusb.h | ||
| msm_hsusb_hw.h | ||
| musb-omap.h | ||
| musb-ux500.h | ||
| musb.h | ||
| net2280.h | ||
| of.h | ||
| ohci_pdriver.h | ||
| otg-fsm.h | ||
| otg.h | ||
| phy.h | ||
| phy_companion.h | ||
| quirks.h | ||
| r8a66597.h | ||
| renesas_usbhs.h | ||
| rndis_host.h | ||
| samsung_usb_phy.h | ||
| serial.h | ||
| sl811.h | ||
| storage.h | ||
| tegra_usb_phy.h | ||
| tilegx.h | ||
| uas.h | ||
| ulpi.h | ||
| usb_phy_gen_xceiv.h | ||
| usbnet.h | ||
| wusb-wa.h | ||
| wusb.h | ||