diff mbox series

[v2,03/25] usb: gadget: f_tcm: Increase stream count

Message ID 79dbca4db65f676df37462b7a008198c81a3297e.1658192351.git.Thinh.Nguyen@synopsys.com (mailing list archive)
State New, archived
Headers show
Series usb: gadget: f_tcm: Enhance UASP driver | expand

Commit Message

Thinh Nguyen July 19, 2022, 1:26 a.m. UTC
Some old builds of Microsoft Windows 10 UASP class driver reject USAP
device with stream count of 2^4. To keep compatibility with both Linux
and Windows, let's increase the stream count to 2^5. Also, internal
tests show that stream count of 2^5 increases performance slightly.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
 Changes in v2:
 - None

 drivers/usb/gadget/function/tcm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Sergey Shtylyov July 19, 2022, 9:02 a.m. UTC | #1
Hello!

On 7/19/22 4:26 AM, Thinh Nguyen wrote:

> Some old builds of Microsoft Windows 10 UASP class driver reject USAP

   UASP?

> device with stream count of 2^4. To keep compatibility with both Linux
> and Windows, let's increase the stream count to 2^5. Also, internal
> tests show that stream count of 2^5 increases performance slightly.
> 
> Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
[...]

MBR, Sergey
diff mbox series

Patch

diff --git a/drivers/usb/gadget/function/tcm.h b/drivers/usb/gadget/function/tcm.h
index 3cd565794ad7..6cb05dcd19ff 100644
--- a/drivers/usb/gadget/function/tcm.h
+++ b/drivers/usb/gadget/function/tcm.h
@@ -13,7 +13,7 @@ 
 #define USBG_NAMELEN 32
 
 #define fuas_to_gadget(f)	(f->function.config->cdev->gadget)
-#define UASP_SS_EP_COMP_LOG_STREAMS 4
+#define UASP_SS_EP_COMP_LOG_STREAMS 5
 #define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS)
 
 enum {