]> git.baikalelectronics.ru Git - kernel.git/commit
USB: Allow transfer_buffer with transfer_dma
authorTony Lindgren <tony@atomide.com>
Sun, 1 Apr 2007 01:15:43 +0000 (18:15 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 27 Apr 2007 20:28:39 +0000 (13:28 -0700)
commitcc0ac6c3f82565a96d4d34dacd6db799b72f92f5
treeccad5ae6102b257676806575d156895bb10ddcdf
parentcfc5c9a82621e1758275d5fa0a715df0c885c7f9
USB: Allow transfer_buffer with transfer_dma

Some host controller drivers may need a PIO fallback when a DMA channel
is temporarily unavailable.  This patch provides an address that such
drivers can use for PIO in those cases, and nulls that field out when
no such address is available (highmem) which should help usbmon.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/core/message.c