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 /drivers/usb/class/cdc-acm.c | |
| 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 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 84e69ea2309b..5a97ff143fc3 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1134,8 +1134,8 @@ made_compressed_probe: struct acm_rb *rb = &(acm->read_buffers[i]); struct urb *urb; - rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, - &rb->dma); + rb->base = usb_alloc_nonbufferable(acm->dev, readsize, + GFP_KERNEL, &rb->dma); if (!rb->base) { dev_err(&intf->dev, "out of memory " "(read bufs usb_alloc_coherent)\n"); |