[PATCH v2 2/6] usb: dwc3: ep0: use _roundup_ to calculate the transfer size

From: Kishon Vijay Abraham I
Date: Fri Jul 24 2015 - 02:47:36 EST


No functional change. Used _roundup_ macro to calculate the transfer
size aligned to maxpacket in dwc3_ep0_complete_data. It also makes it
similar to how transfer size is calculated in __dwc3_ep0_do_control_data.

Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
drivers/usb/dwc3/ep0.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 8858c60..713e46a 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -812,10 +812,8 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
length = trb->size & DWC3_TRB_SIZE_MASK;

if (dwc->ep0_bounced) {
- unsigned transfer_size = ur->length;
unsigned maxp = ep0->endpoint.maxpacket;
-
- transfer_size += (maxp - (transfer_size % maxp));
+ unsigned transfer_size = roundup(ur->length, maxp);

/* Maximum of DWC3_EP0_BOUNCE_SIZE can only be received */
if (transfer_size > DWC3_EP0_BOUNCE_SIZE)
--
1.7.9.5

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