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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2a159389bf
Add new quirk for devices that cannot handle requests for the device_qualifier descriptor. A USB-2.0 compliant device must respond to requests for the device_qualifier descriptor (even if it's with a request error), but at least one device is known to misbehave after such a request. Suggested-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
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* This file holds the definitions of quirks found in USB devices.
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* Only quirks that affect the whole device, not an interface,
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* belong here.
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*/
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#ifndef __LINUX_USB_QUIRKS_H
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#define __LINUX_USB_QUIRKS_H
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/* string descriptors must not be fetched using a 255-byte read */
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#define USB_QUIRK_STRING_FETCH_255 0x00000001
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/* device can't resume correctly so reset it instead */
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#define USB_QUIRK_RESET_RESUME 0x00000002
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/* device can't handle Set-Interface requests */
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#define USB_QUIRK_NO_SET_INTF 0x00000004
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/* device can't handle its Configuration or Interface strings */
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#define USB_QUIRK_CONFIG_INTF_STRINGS 0x00000008
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/* device can't be reset(e.g morph devices), don't use reset */
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#define USB_QUIRK_RESET 0x00000010
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/* device has more interface descriptions than the bNumInterfaces count,
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and can't handle talking to these interfaces */
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#define USB_QUIRK_HONOR_BNUMINTERFACES 0x00000020
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/* device needs a pause during initialization, after we read the device
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descriptor */
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#define USB_QUIRK_DELAY_INIT 0x00000040
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/*
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* For high speed and super speed interupt endpoints, the USB 2.0 and
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* USB 3.0 spec require the interval in microframes
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* (1 microframe = 125 microseconds) to be calculated as
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* interval = 2 ^ (bInterval-1).
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*
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* Devices with this quirk report their bInterval as the result of this
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* calculation instead of the exponent variable used in the calculation.
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*/
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#define USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL 0x00000080
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/* device can't handle device_qualifier descriptor requests */
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#define USB_QUIRK_DEVICE_QUALIFIER 0x00000100
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#endif /* __LINUX_USB_QUIRKS_H */
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