Commit f80a0ca6 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Linus Torvalds
Browse files

pktcdvd: improve BKL and compat_ioctl.c usage



The pktcdvd driver uses proper locking and does not need the BKL in the
ioctl and llseek functions of the character device, so kill both.

Moving the compat_ioctl handling from common code into the driver itself
fixes build problems when CONFIG_BLOCK is disabled.
Acked-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a36fed12
......@@ -48,6 +48,7 @@
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/compat.h>
#include <linux/kthread.h>
#include <linux/errno.h>
#include <linux/spinlock.h>
......@@ -2984,7 +2985,7 @@ static void pkt_get_status(struct pkt_ctrl_command *ctrl_cmd)
mutex_unlock(&ctl_mutex);
}
static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
static long pkt_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct pkt_ctrl_command ctrl_cmd;
......@@ -3021,10 +3022,20 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
return ret;
}
#ifdef CONFIG_COMPAT
static long pkt_ctl_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
return pkt_ctl_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
}
#endif
static const struct file_operations pkt_ctl_fops = {
.ioctl = pkt_ctl_ioctl,
.owner = THIS_MODULE,
.open = nonseekable_open,
.unlocked_ioctl = pkt_ctl_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = pkt_ctl_compat_ioctl,
#endif
.owner = THIS_MODULE,
};
static struct miscdevice pkt_misc = {
......
......@@ -102,7 +102,6 @@
#include <linux/nbd.h>
#include <linux/random.h>
#include <linux/filter.h>
#include <linux/pktcdvd.h>
#include <linux/hiddev.h>
......@@ -1126,8 +1125,6 @@ COMPATIBLE_IOCTL(PPGETMODE)
COMPATIBLE_IOCTL(PPGETPHASE)
COMPATIBLE_IOCTL(PPGETFLAGS)
COMPATIBLE_IOCTL(PPSETFLAGS)
/* pktcdvd */
COMPATIBLE_IOCTL(PACKET_CTRL_CMD)
/* Big A */
/* sparc only */
/* Big Q for sound/OSS */
......
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