From 4f4eab4d14b181c3a9447c75fd2b41b9d0d761e4 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Wed, 24 Apr 2013 02:50:13 +0000 Subject: [PATCH] usb: common: Use a global definition for 'min3' We can use a common global method for calculating minimum of 3 numbers. Put the same in 'common header' and let 'ehci' use it. Signed-off-by: Vivek Gautam Acked-by: Tom Rini --- drivers/usb/host/ehci-hcd.c | 10 ---------- include/common.h | 25 +++++++++++++++++++++---- 2 files changed, 21 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 19d4352024..e0f3e4b6c7 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -603,16 +603,6 @@ fail: return -1; } -static inline int min3(int a, int b, int c) -{ - - if (b < a) - a = b; - if (c < a) - a = c; - return a; -} - int ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, int length, struct devrequest *req) diff --git a/include/common.h b/include/common.h index 8a1f3e406d..40e4b077fd 100644 --- a/include/common.h +++ b/include/common.h @@ -199,18 +199,35 @@ typedef void (interrupt_handler_t)(void *); * General Purpose Utilities */ #define min(X, Y) \ - ({ typeof (X) __x = (X); \ - typeof (Y) __y = (Y); \ + ({ typeof(X) __x = (X); \ + typeof(Y) __y = (Y); \ (__x < __y) ? __x : __y; }) #define max(X, Y) \ - ({ typeof (X) __x = (X); \ - typeof (Y) __y = (Y); \ + ({ typeof(X) __x = (X); \ + typeof(Y) __y = (Y); \ (__x > __y) ? __x : __y; }) #define MIN(x, y) min(x, y) #define MAX(x, y) max(x, y) +#define min3(X, Y, Z) \ + ({ typeof(X) __x = (X); \ + typeof(Y) __y = (Y); \ + typeof(Z) __z = (Z); \ + __x < __y ? (__x < __z ? __x : __z) : \ + (__y < __z ? __y : __z); }) + +#define max3(X, Y, Z) \ + ({ typeof(X) __x = (X); \ + typeof(Y) __y = (Y); \ + typeof(Z) __z = (Z); \ + __x > __y ? (__x > __z ? __x : __z) : \ + (__y > __z ? __y : __z); }) + +#define MIN3(x, y, z) min3(x, y, z) +#define MAX3(x, y, z) max3(x, y, z) + /* * Return the absolute value of a number. * -- 2.25.1