[PATCH] USB: mark various usb tables const
patch below marks various USB tables and variables as const so that they
end up in .rodata section and don't cacheline share with things that get
written to. For the non-array variables it also allows gcc to optimize
more.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/input/xpad.c b/drivers/usb/input/xpad.c
index e421328..e278489 100644
--- a/drivers/usb/input/xpad.c
+++ b/drivers/usb/input/xpad.c
@@ -70,7 +70,7 @@
#define XPAD_PKT_LEN 32
-static struct xpad_device {
+static const struct xpad_device {
u16 idVendor;
u16 idProduct;
char *name;
@@ -81,13 +81,13 @@
{ 0x0000, 0x0000, "X-Box pad" }
};
-static signed short xpad_btn[] = {
+static const signed short xpad_btn[] = {
BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, /* "analog" buttons */
BTN_START, BTN_BACK, BTN_THUMBL, BTN_THUMBR, /* start/back/sticks */
-1 /* terminating entry */
};
-static signed short xpad_abs[] = {
+static const signed short xpad_abs[] = {
ABS_X, ABS_Y, /* left stick */
ABS_RX, ABS_RY, /* right stick */
ABS_Z, ABS_RZ, /* triggers left/right */