[PATCH][UHCI-DEBUG] Don't kmalloc with BKL held

From: Sven-Thorsten Dietrich
Date: Fri Oct 02 2009 - 05:12:37 EST


Subject: Don't kmalloc with BKL held.
From: Sven-Thorsten Dietrich <sdietrich@xxxxxxx>

I'm eyeballing this file for complete removal of lock_kernel but
at first glance, we definitely don't need BKL to kmalloc().

Signed-off-by: Sven-Thorsten Dietrich <sdietrich@xxxxxxx>


diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c
index e52b954..325d508 100644
--- a/drivers/usb/host/uhci-debug.c
+++ b/drivers/usb/host/uhci-debug.c
@@ -497,7 +497,6 @@ static int uhci_debug_open(struct inode *inode, struct file *file)
int ret = -ENOMEM;
unsigned long flags;

- lock_kernel();
up = kmalloc(sizeof(*up), GFP_KERNEL);
if (!up)
goto out;
@@ -509,6 +508,8 @@ static int uhci_debug_open(struct inode *inode, struct file *file)
}

up->size = 0;
+
+ lock_kernel();
spin_lock_irqsave(&uhci->lock, flags);
if (uhci->is_initialized)
up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT);


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