From 96f9bc373c83a67922dc32f358e8a3b3dd4e18a0 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 13 Feb 2008 17:02:33 +0900 Subject: [PATCH] USB: m66592-udc: reduce size of data structure. Poking around with pahole, we see that m66592 handily shoves a u16 in between larger types on 2 separate occasions leaving us with 2 2-byte holes: struct m66592 { ... /* size: 1196, cachelines: 38 */ /* sum members: 1192, holes: 2, sum holes: 4 */ /* last cacheline: 12 bytes */ }; /* definitions: 1 */ Pairing them gets back 4-bytes: struct m66592 { ... /* size: 1192, cachelines: 38 */ /* last cacheline: 8 bytes */ }; /* definitions: 1 */ Unfortunately it's not enough to save a cacheline with this massive structure, but every byte helps. Signed-off-by: Paul Mundt Signed-off-by: Yoshihiro Shimoda Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/m66592-udc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h index 17b792b7f6bf..be0a4c1f80a2 100644 --- a/drivers/usb/gadget/m66592-udc.h +++ b/drivers/usb/gadget/m66592-udc.h @@ -486,10 +486,10 @@ struct m66592 { struct usb_request *ep0_req; /* for internal request */ u16 ep0_data; /* for internal request */ + u16 old_vbus; struct timer_list timer; - u16 old_vbus; int scount; int old_dvsq; -- 2.20.1