diff options
| author | ZCHLABB47624-01 <b47624@b47624.ap.freescale.net> | 2014-05-15 18:50:30 +0800 |
|---|---|---|
| committer | Peng Fushi <fushi.peng@freescale.com> | 2014-08-29 14:30:36 +0800 |
| commit | e314064d431d32a5a81da6681f57cdb3c20cad5b (patch) | |
| tree | fc771d02c1c4d04de8ad3efd0b6ca6c222183903 /include/linux/usb | |
| parent | dec81b660c750177ed8907cf0ff12d8e55e2abb2 (diff) | |
ENGR00313729 usb: class: acm: use nonbufferable memory for rx dma buffer
use dma_pool_alloc_nonbufferable for rx buf instead of dma_alloc_coherent
for usb host cdc-acm to fix data coherent issue.
Signed-off-by: Li Jun <b47624@freescale.com>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/hcd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index c0ecc5a2ef9e..fae56f96f0bc 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -405,6 +405,8 @@ void hcd_buffer_destroy(struct usb_hcd *hcd); void *hcd_buffer_alloc(struct usb_bus *bus, size_t size, gfp_t mem_flags, dma_addr_t *dma); +void *hcd_buffer_alloc_nonbufferable(struct usb_bus *bus, size_t size, + gfp_t mem_flags, dma_addr_t *dma); void hcd_buffer_free(struct usb_bus *bus, size_t size, void *addr, dma_addr_t dma); |