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Many vendors highspeed devices give erroneously fullspeed interval value in endpoint descriptor for interrupt endpoints. This quirk fixes up that by recalculating the right value for highspeed device. At the time of hid configuration this quirk calculates which highspeed interval value gives same interval delay as, or next smaller then, what it would be if the original value would be interpreted as fullspeed value. In subsequent urbs that new value is used instead. Forming the 'hid->name' in usb_hid_config() was moved up to accommodate more descriptive printk reporting the fixup. In this patch the quirk is set for one such device: Afatech DVB-T 2 infrared HID-keyboard. It reports value 16 which means 4,069s in highspeed while obviously 16ms was intended. In this case quirk calculates new value to be 8 which gives when interpreted as highspeed value 16ms as wanted. The behavior of the device was verified to be what expected both before and after the patch. Signed-off-by: Pekka Sarnila <sarnila@adit.fi> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
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| .. | ||
| usbhid | ||
| hid-core.c | ||
| hid-debug.c | ||
| hid-input-quirks.c | ||
| hid-input.c | ||
| hidraw.c | ||
| Kconfig | ||
| Makefile | ||