diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2007-11-06 19:43:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-11-29 00:58:35 +0300 |
| commit | 7e61559f6199bb387037abfc7d10a893973561fc (patch) | |
| tree | dd3e8f8cca77077bc4567a047cfe9ee74d100525 /drivers/usb/core/message.c | |
| parent | 5fdcd0396be443e36a4e2128f51818acca570ee7 (diff) | |
| download | linux-7e61559f6199bb387037abfc7d10a893973561fc.tar.xz | |
USB: keep track of whether interface sysfs files exist
This patch (as1009) solves the problem of multiple registrations for
USB sysfs files in a more satisfying way than the existing code. It
simply adds a flag to keep track of whether or not the files have been
created; that way the files can be created or removed as needed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Diffstat (limited to 'drivers/usb/core/message.c')
| -rw-r--r-- | drivers/usb/core/message.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 316a746e0080..40fd39de5bf9 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1172,7 +1172,6 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) struct usb_host_interface *alt; int ret; int manual = 0; - int changed; if (dev->state == USB_STATE_SUSPENDED) return -EHOSTUNREACH; @@ -1212,8 +1211,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) */ /* prevent submissions using previous endpoint settings */ - changed = (iface->cur_altsetting != alt); - if (changed && device_is_registered(&iface->dev)) + if (iface->cur_altsetting != alt && device_is_registered(&iface->dev)) usb_remove_sysfs_intf_files(iface); usb_disable_interface(dev, iface); @@ -1250,7 +1248,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) * (Likewise, EP0 never "halts" on well designed devices.) */ usb_enable_interface(dev, iface); - if (changed && device_is_registered(&iface->dev)) + if (device_is_registered(&iface->dev)) usb_create_sysfs_intf_files(iface); return 0; @@ -1641,12 +1639,6 @@ free_interfaces: intf->dev.bus_id, ret); continue; } - - /* The driver's probe method can call usb_set_interface(), - * which would mean the interface's sysfs files are already - * created. Just in case, we'll remove them first. - */ - usb_remove_sysfs_intf_files(intf); usb_create_sysfs_intf_files(intf); } |