[PATCH 13/21] [staging] tm6000: Properly count device usage.
From: Thierry Reding <hidden>
Date: 2011-08-04 07:14:28
Subsystem:
staging subsystem, the rest · Maintainers:
Greg Kroah-Hartman, Linus Torvalds
When the USB device is disconnected, the device usage bit is not cleared properly. This leads to errors when a device is unplugged and replugged several times until all TM6000_MAXBOARDS bits are used and keeps the driver from binding to the device. --- drivers/staging/tm6000/tm6000-cards.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c
index 68f7c7a..94fd138 100644
--- a/drivers/staging/tm6000/tm6000-cards.c
+++ b/drivers/staging/tm6000/tm6000-cards.c@@ -1177,7 +1177,7 @@ static int tm6000_usb_probe(struct usb_interface *interface, mutex_init(&dev->usb_lock); /* Increment usage count */ - tm6000_devused |= 1<<nr; + set_bit(nr, &tm6000_devused); snprintf(dev->name, 29, "tm6000 #%d", nr); dev->model = id->driver_info;
@@ -1293,7 +1293,7 @@ static int tm6000_usb_probe(struct usb_interface *interface, err: printk(KERN_ERR "tm6000: Error %d while registering\n", rc); - tm6000_devused &= ~(1<<nr); + clear_bit(nr, &tm6000_devused); usb_put_dev(usbdev); kfree(dev);
@@ -1351,6 +1351,7 @@ static void tm6000_usb_disconnect(struct usb_interface *interface) tm6000_close_extension(dev); tm6000_remove_from_devlist(dev); + clear_bit(dev->devno, &tm6000_devused); kfree(dev); }
--
1.7.6