From ad2ee015245dfe22743a25d7245b3d6abd33c02e Mon Sep 17 00:00:00 2001 From: Oleksandr Andrushchenko Date: Sun, 28 May 2017 23:52:23 -0700 Subject: [PATCH] Input: xen-kbdfront - use string constants from PV protocol Xen input para-virtual protocol defines string constants used by both back and frontend. Use those instead of explicit strings in the frontend driver. Signed-off-by: Oleksandr Andrushchenko Signed-off-by: Dmitry Torokhov --- drivers/input/misc/xen-kbdfront.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c index 690148f9940e..eb770613a9bd 100644 --- a/drivers/input/misc/xen-kbdfront.c +++ b/drivers/input/misc/xen-kbdfront.c @@ -135,14 +135,17 @@ static int xenkbd_probe(struct xenbus_device *dev, goto error_nomem; /* Set input abs params to match backend screen res */ - abs = xenbus_read_unsigned(dev->otherend, "feature-abs-pointer", 0); - ptr_size[KPARAM_X] = xenbus_read_unsigned(dev->otherend, "width", + abs = xenbus_read_unsigned(dev->otherend, + XENKBD_FIELD_FEAT_ABS_POINTER, 0); + ptr_size[KPARAM_X] = xenbus_read_unsigned(dev->otherend, + XENKBD_FIELD_WIDTH, ptr_size[KPARAM_X]); - ptr_size[KPARAM_Y] = xenbus_read_unsigned(dev->otherend, "height", + ptr_size[KPARAM_Y] = xenbus_read_unsigned(dev->otherend, + XENKBD_FIELD_HEIGHT, ptr_size[KPARAM_Y]); if (abs) { ret = xenbus_write(XBT_NIL, dev->nodename, - "request-abs-pointer", "1"); + XENKBD_FIELD_REQ_ABS_POINTER, "1"); if (ret) { pr_warn("xenkbd: can't request abs-pointer\n"); abs = 0; @@ -271,14 +274,15 @@ static int xenkbd_connect_backend(struct xenbus_device *dev, xenbus_dev_fatal(dev, ret, "starting transaction"); goto error_irqh; } - ret = xenbus_printf(xbt, dev->nodename, "page-ref", "%lu", + ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_RING_REF, "%lu", virt_to_gfn(info->page)); if (ret) goto error_xenbus; - ret = xenbus_printf(xbt, dev->nodename, "page-gref", "%u", info->gref); + ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_RING_GREF, + "%u", info->gref); if (ret) goto error_xenbus; - ret = xenbus_printf(xbt, dev->nodename, "event-channel", "%u", + ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_EVT_CHANNEL, "%u", evtchn); if (ret) goto error_xenbus; @@ -353,7 +357,7 @@ static void xenkbd_backend_changed(struct xenbus_device *dev, } static const struct xenbus_device_id xenkbd_ids[] = { - { "vkbd" }, + { XENKBD_DRIVER_NAME }, { "" } }; @@ -390,4 +394,4 @@ module_exit(xenkbd_cleanup); MODULE_DESCRIPTION("Xen virtual keyboard/pointer device frontend"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("xen:vkbd"); +MODULE_ALIAS("xen:" XENKBD_DRIVER_NAME); -- 2.30.2