diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-03-10 14:40:31 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-04-14 09:24:37 +0300 |
| commit | 8495036e986bdc7e82523d47097e7833d2782ff9 (patch) | |
| tree | 08413e1f3ab879cf8ce473c771fa712871293d06 /drivers/usb/dwc3 | |
| parent | ca4d44ea2a91b922e1514f5ed77f6bcf3657fd67 (diff) | |
usb: dwc3: increase maximum number of TRBs per endpoint
previously we were using a maximum of 32 TRBs per
endpoint. With each TRB being 16 bytes long, we were
using 512 bytes of memory for each endpoint.
However, SLAB/SLUB will always allocate PAGE_SIZE
chunks. In order to better utilize the memory we
allocate and to allow deeper queues for gadgets
which would benefit from it (g_ether comes to mind),
let's increase the maximum to 256 TRBs which rounds
up to 4096 bytes for each endpoint.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 7cbe9e93a6b2..5e17c02d3e92 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -438,7 +438,7 @@ struct dwc3_event_buffer { #define DWC3_EP_DIRECTION_TX true #define DWC3_EP_DIRECTION_RX false -#define DWC3_TRB_NUM 32 +#define DWC3_TRB_NUM 256 #define DWC3_TRB_MASK (DWC3_TRB_NUM - 1) /** |