usb: musb: Fix fifo reads for dm816x with musb_dsps
Looks like dm81xx can only do 32-bit fifo reads like am35x. Let's set up musb-dsps with a custom read_fifo function based on the compatible flag. Otherwise we can get the following errors when starting dhclient on a asix USB Ethernet adapter: asix 2-1:1.0 eth2: asix_rx_fixup() Bad Header Length 0xffff003c, offset 4 While at it, let's also remove pointless cast of the driver data. Cc: Bin Liu <binmlist@gmail.com> Cc: Brian Hutchinson <b.hutchman@gmail.com> Cc: George Cherian <george.cherian@ti.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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