The code here treated user pointers correctly, but the __user tags weren't used correctly so it caused Sparse warnings: drivers/media/rc/ir-lirc-codec.c:122:29: warning: incorrect type in argument 1 (different address spaces) drivers/media/rc/ir-lirc-codec.c:122:29: expected void const [noderef] <asn:1>*<noident> drivers/media/rc/ir-lirc-codec.c:122:29: got char const *buf drivers/media/rc/ir-lirc-codec.c:160:23: warning: incorrect type in argument 1 (different address spaces) drivers/media/rc/ir-lirc-codec.c:160:23: expected void const volatile [noderef] <asn:1>*<noident> drivers/media/rc/ir-lirc-codec.c:160:23: got unsigned int [usertype] *<noident> drivers/media/rc/ir-lirc-codec.c:269:23: warning: incorrect type in argument 1 (different address spaces) drivers/media/rc/ir-lirc-codec.c:269:23: expected void const volatile [noderef] <asn:1>*<noident> drivers/media/rc/ir-lirc-codec.c:269:23: got unsigned int [usertype] *<noident> drivers/media/rc/ir-lirc-codec.c:286:27: warning: incorrect type in initializer (incompatible argument 2 (different address spaces)) drivers/media/rc/ir-lirc-codec.c:286:27: expected long ( *write )( ... ) drivers/media/rc/ir-lirc-codec.c:286:27: got long ( static [toplevel] *<noident> )( ... ) drivers/media/rc/ir-lirc-codec.c:287:27: warning: incorrect type in initializer (incompatible argument 3 (different address spaces)) drivers/media/rc/ir-lirc-codec.c:287:27: expected long ( *unlocked_ioctl )( ... ) drivers/media/rc/ir-lirc-codec.c:287:27: got long ( static [toplevel] *<noident> )( ... ) drivers/media/rc/ir-lirc-codec.c:289:27: warning: incorrect type in initializer (incompatible argument 3 (different address spaces)) drivers/media/rc/ir-lirc-codec.c:289:27: expected long ( *compat_ioctl )( ... ) drivers/media/rc/ir-lirc-codec.c:289:27: got long ( static [toplevel] *<noident> )( ... ) drivers/media/rc/ir-lirc-codec.c:160:23: warning: dereference of noderef expression drivers/media/rc/ir-lirc-codec.c:265:55: warning: dereference of noderef expression drivers/media/rc/ir-lirc-codec.c:269:23: warning: dereference of noderef expression Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c index 165ea8f..5faba2a 100644 --- a/drivers/media/rc/ir-lirc-codec.c +++ b/drivers/media/rc/ir-lirc-codec.c @@ -99,7 +99,7 @@ static int ir_lirc_decode(struct rc_dev *dev, struct ir_raw_event ev) return 0; } -static ssize_t ir_lirc_transmit_ir(struct file *file, const char *buf, +static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf, size_t n, loff_t *ppos) { struct lirc_codec *lirc; @@ -141,10 +141,11 @@ out: } static long ir_lirc_ioctl(struct file *filep, unsigned int cmd, - unsigned long __user arg) + unsigned long arg) { struct lirc_codec *lirc; struct rc_dev *dev; + u32 __user *argp = (u32 __user *)(arg); int ret = 0; __u32 val = 0, tmp; @@ -157,7 +158,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd, return -EFAULT; if (_IOC_DIR(cmd) & _IOC_WRITE) { - ret = get_user(val, (__u32 *)arg); + ret = get_user(val, argp); if (ret) return ret; } @@ -266,7 +267,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd, } if (_IOC_DIR(cmd) & _IOC_READ) - ret = put_user(val, (__u32 *)arg); + ret = put_user(val, argp); return ret; } -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html