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[PATCH] USB: convert a bunch of USB semaphores to mutexes

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the patch below converts a bunch of semaphores-used-as-mutex in the USB
code to mutexes

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Arjan van de Ven
2006-01-11 15:55:29 +01:00
committed by Greg Kroah-Hartman
parent 35cce732d9
commit 4186ecf8ad
34 changed files with 389 additions and 372 deletions
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5
drivers/usb/core/usb.c
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@@ -33,6 +33,7 @@
#include <linux/errno.h>
#include <linux/smp_lock.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/scatterlist.h>
@@ -639,7 +640,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
struct usb_bus *bus;
struct usb_device *dev = NULL;
down(&usb_bus_list_lock);
mutex_lock(&usb_bus_list_lock);
for (buslist = usb_bus_list.next;
buslist != &usb_bus_list;
buslist = buslist->next) {
@@ -653,7 +654,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
goto exit;
}
exit:
up(&usb_bus_list_lock);
mutex_unlock(&usb_bus_list_lock);
return dev;
}