Aaro Koskinen 120ee599b5 staging: octeon-usb: prevent memory corruption ... octeon-hcd will crash the kernel when SLOB is used. This usually happens after the 18-byte control transfer when a device descriptor is read. The DMA engine is always transfering full 32-bit words and if the transfer is shorter, some random garbage appears after the buffer. The problem is not visible with SLUB since it rounds up the allocations to word boundary, and the extra bytes will go undetected. Fix by providing quirk functions for DMA map/unmap that allocate a bigger temporary buffer when necessary. Tested by booting EdgeRouter Lite to USB stick root file system with SLAB, SLOB and SLUB kernels. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=72121 Reported-by: Sergey Popov <pinkbyte@gentoo.org> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-03-20 01:51:12 +00:00
..
Kconfig	staging: octeon-usb: depend on CAVIUM_OCTEON_SOC	2013-07-29 11:41:27 -07:00
Makefile	staging: octeon-usb: merge cvmx-usb into octeon-hcd	2013-10-06 22:02:21 -07:00
octeon-hcd.c	staging: octeon-usb: prevent memory corruption	2014-03-20 01:51:12 +00:00
octeon-hcd.h	staging: octeon-usb: use a single .h file	2013-10-11 15:45:59 -07:00
TODO