Dear Puneet Saxena,
This avoids cache-alignment warnings shown in console when a usb command is entered.
Whenever X bytes of unaligned buffer is invalidated, arm core invalidates X + Y bytes as per the cache line size and throws these warnings.
Signed-off-by: Puneet Saxena puneets@nvidia.com
I think we're almost there, hurray! :-)
Though on m28evk this still has issues:
=> usb reset (Re)start USB... USB: Register 10011 NbrPorts 1 USB EHCI 1.00 scanning bus for devices... EHCI timed out on TD - token=0x80008c80 EHCI timed out on TD - token=0x80008d80 EHCI timed out on TD - token=0x80008c80 EHCI timed out on TD - token=0x80008c80 EHCI timed out on TD - token=0x80008c80 ERROR: NOT USB_CONFIG_DESC 1 EHCI timed out on TD - token=0x80008d80 2 USB Device(s) found scanning bus for storage devices... 0 Storage Device(s) found
I have a single USB pendrive connected to the board.
Also note, that if I disable the caches, it all works even with your patch applied. So I suspect there's something even more to this (maybe broken ehci_invalidate_dcache() ? ). Where did you test these patches?
Thanks!
Best regards, Marek Vasut