Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-02 10:11:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

usb: dwc3: increase maximum number of TRBs per endpoint

Browse Source 
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>
This commit is contained in:
Felipe Balbi 2016-03-10 14:40:31 +02:00
parent ca4d44ea2a
commit 8495036e98
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/dwc3/core.h
View File

@ -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)
/**