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Commit 609f9e92 authored by Jonathan Corbet's avatar Jonathan Corbet
Browse files

spidev: BKL pushdown 



Add the BKL to spidev_open(), even though the existing locking looks
adequate.

Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent d21c95c5

drivers/spi/spidev.c

+3 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/errno.h>

#include <linux/mutex.h>

#include <linux/slab.h>

#include <linux/smp_lock.h>



#include <linux/spi/spi.h>

#include <linux/spi/spidev.h>
@@ -393,6 +394,7 @@ static int spidev_open(struct inode *inode, struct file *filp) 
	struct spidev_data	*spidev;

	int			status = -ENXIO;



	lock_kernel();

	mutex_lock(&device_list_lock);



	list_for_each_entry(spidev, &device_list, device_entry) {
@@ -418,6 +420,7 @@ static int spidev_open(struct inode *inode, struct file *filp) 
		pr_debug("spidev: nothing for minor %d\n", iminor(inode));



	mutex_unlock(&device_list_lock);

	unlock_kernel();

	return status;

}