diff options
Diffstat (limited to 'drivers/input/mouse/bcm5974.c')
| -rw-r--r-- | drivers/input/mouse/bcm5974.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index ca150618d32f..953992b458e9 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -19,6 +19,7 @@ * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch) */ +#include "linux/usb.h" #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> @@ -193,6 +194,8 @@ enum tp_type { /* list of device capability bits */ #define HAS_INTEGRATED_BUTTON 1 +/* maximum number of supported endpoints (currently trackpad and button) */ +#define MAX_ENDPOINTS 2 /* trackpad finger data block size */ #define FSIZE_TYPE1 (14 * sizeof(__le16)) @@ -891,6 +894,18 @@ static int bcm5974_resume(struct usb_interface *iface) return error; } +static bool bcm5974_check_endpoints(struct usb_interface *iface, + const struct bcm5974_config *cfg) +{ + u8 ep_addr[MAX_ENDPOINTS + 1] = {0}; + + ep_addr[0] = cfg->tp_ep; + if (cfg->tp_type == TYPE1) + ep_addr[1] = cfg->bt_ep; + + return usb_check_int_endpoints(iface, ep_addr); +} + static int bcm5974_probe(struct usb_interface *iface, const struct usb_device_id *id) { @@ -903,6 +918,11 @@ static int bcm5974_probe(struct usb_interface *iface, /* find the product index */ cfg = bcm5974_get_config(udev); + if (!bcm5974_check_endpoints(iface, cfg)) { + dev_err(&iface->dev, "Unexpected non-int endpoint\n"); + return -ENODEV; + } + /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(struct bcm5974), GFP_KERNEL); input_dev = input_allocate_device(); |