From f80a0ca6ad8f2800453e819dafa09a0ed9e56850 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 28 Apr 2010 14:36:41 +0200 Subject: 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: Randy Dunlap Signed-off-by: Arnd Bergmann Signed-off-by: Linus Torvalds --- drivers/block/pktcdvd.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index ddf19425245d..8a549db2aa78 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -48,6 +48,7 @@ #include #include #include +#include #include #include #include @@ -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 = { -- cgit v1.2.3