[U-Boot] [PATCH v2] usb_storage: fix ehci driver max transfer size

Marek Vasut
2012-07-15T09:50:30Z

Dear Wolfgang Denk,

> The commit 5dd95cf93dfffa1d19a1928990852aac9f55b9d9 'usb_storage:
> Fix EHCI "out of buffer pointers" with CD-ROM' introduce a bug in
> usb_storage as it wrongly assumes that every transfer can use
> 4096 bytes per qt_buffer. This is wrong if the start address of
> the data is not page aligned to 4096 bytes and leads to 'EHCI
> timed out on TD' messages because of 'out of buffer pointers'
> in ehci_td_buffer function.
>
> The bug appears during load of a fragmented file and
> read from or write to an unaligned memory address.
>
> Cc: Marek Vasut <marex@denx.de>
> Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>

I'd like to get this patch:

http://patchwork.ozlabs.org/patch/170256/

applied into current release. If you consider a pullRQ is better, I'll prepare
one.

Best regards,
Marek Vasut