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authorDavid Howells <dhowells@redhat.com>2008-07-02 12:28:55 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2008-07-21 15:16:44 -0700
commita80d5ff0d7d3a99e962a02c36acf97ba5a70b86e (patch)
treec8024d773006bf61126509cb8292d1341ac4dd2f /drivers/usb
parent4ddd9ec17af6a7c539f4a12758905340c00847d6 (diff)
USB: Fix pointer/int cast in USB devio code
Fix pointer/int cast in USB devio code, and thus avoid a compiler warning. A void* data argument passed to bus_find_device() and thence to match_devt() is used to carry a 32-bit datum. However, casting directly between a u32 and a pointer is not permitted - there must be an intermediate cast via (unsigned) long. This was introduced by the following patch: commit 94b1c9fa060ece2c8f080583beb6cc6008e41413 Author: Alan Stern <stern@rowland.harvard.edu> Date: Tue Jun 24 14:47:12 2008 -0400 usbfs: simplify the lookup-by-minor routines This patch (as1105) simplifies the lookup-by-minor-number code in usbfs. Instead of passing the minor number to the callback, which must then reconstruct the entire dev_t value, the patch passes the dev_t value directly. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: David Howells <dhowells@redhat.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/core/devio.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 5580c6e59ba..54a350ccd03 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -552,14 +552,15 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
static int match_devt(struct device *dev, void *data)
{
- return (dev->devt == (dev_t) data);
+ return dev->devt == (dev_t) (unsigned long) data;
}
static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
{
struct device *dev;
- dev = bus_find_device(&usb_bus_type, NULL, (void *) devt, match_devt);
+ dev = bus_find_device(&usb_bus_type, NULL,
+ (void *) (unsigned long) devt, match_devt);
if (!dev)
return NULL;
return container_of(dev, struct usb_device, dev);