mirror of https://gitee.com/openkylin/linux.git
0ede76fcec
This patch (as1350) removes all usages of coherent buffers for USB control-request setup-packet buffers. There's no good reason to reserve coherent memory for these things; control requests are hardly ever used in large quantity (the major exception is firmware transfers, and they aren't time-critical). Furthermore, only seven drivers used it. We might as well always use streaming DMA mappings for setup-packet buffers, and remove some extra complexity from usbcore. The DMA-mapping portion of hcd.c is currently in flux. A separate patch will be submitted to remove support for URB_NO_SETUP_DMA_MAP after everything else settles down. The removal should go smoothly, as by then nobody will be using it. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
||
|---|---|---|
| .. | ||
| sisusbvga | ||
| Kconfig | ||
| Makefile | ||
| adutux.c | ||
| appledisplay.c | ||
| cypress_cy7c63.c | ||
| cytherm.c | ||
| emi26.c | ||
| emi62.c | ||
| ftdi-elan.c | ||
| idmouse.c | ||
| iowarrior.c | ||
| isight_firmware.c | ||
| ldusb.c | ||
| legousbtower.c | ||
| rio500.c | ||
| rio500_usb.h | ||
| trancevibrator.c | ||
| usb_u132.h | ||
| usblcd.c | ||
| usbled.c | ||
| usbsevseg.c | ||
| usbtest.c | ||
| uss720.c | ||