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[media] IR/lirc: further ioctl portability fixups

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>From Joris van Rantwijk <jorispubl@xs4all.nl>:

	I tested lirc_serial and found that it works fine.
	Except the LIRC ioctls do not work in my 64-bit-kernel/32-bit-user
	setup. I added compat_ioctl entries in the drivers to fix this.

	While doing so, I noticed inconsistencies in the argument type of
	the LIRC ioctls. All ioctls are declared in lirc.h as having argument
	type __u32, however there are a few places where the driver calls
	get_user/put_user with an unsigned long argument.

	The patch below changes lirc_dev and lirc_serial to use __u32 for all
	ioctl arguments, and adds compat_ioctl entries.
	It should probably also be done in the other low-level drivers,
	but I don't have hardware to test those.

I've dropped the .compat_ioctl addition from Joris' original patch,
as I swear the non-compat definition should now work for both 32-bit
and 64-bit userspace. Technically, I think we still need/want a
in getting a reply to you).

Reported-by: Joris van Rantwijk <jorispubl@xs4all.nl>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jarod Wilson 2010-10-08 17:24:21 -03:00 committed by Mauro Carvalho Chehab
parent d322bf4ab2
commit be1f985ffa
3 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/media/IR/ir-lirc-codec.c
View File

@ -102,7 +102,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
struct ir_input_dev *ir_dev;
int ret = 0;
void *drv_data;
unsigned long val = 0;
__u32 val = 0;
lirc = lirc_get_pdata(filep);
if (!lirc)
@ -115,7 +115,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
drv_data = ir_dev->props->priv;
if (_IOC_DIR(cmd) & _IOC_WRITE) {
ret = get_user(val, (unsigned long *)arg);
ret = get_user(val, (__u32 *)arg);
if (ret)
return ret;
}
@ -135,14 +135,14 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
/* TX settings */
case LIRC_SET_TRANSMITTER_MASK:
if (ir_dev->props->s_tx_mask)
ret = ir_dev->props->s_tx_mask(drv_data, (u32)val);
ret = ir_dev->props->s_tx_mask(drv_data, val);
else
return -EINVAL;
break;
case LIRC_SET_SEND_CARRIER:
if (ir_dev->props->s_tx_carrier)
ir_dev->props->s_tx_carrier(drv_data, (u32)val);
ir_dev->props->s_tx_carrier(drv_data, val);
else
return -EINVAL;
break;
@ -212,7 +212,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
}
if (_IOC_DIR(cmd) & _IOC_READ)
ret = put_user(val, (unsigned long *)arg);
ret = put_user(val, (__u32 *)arg);
return ret;
}

14
drivers/media/IR/lirc_dev.c
View File

@ -524,7 +524,7 @@ EXPORT_SYMBOL(lirc_dev_fop_poll);
long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
unsigned long mode;
__u32 mode;
int result = 0;
struct irctl *ir = file->private_data;
@ -541,7 +541,7 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
switch (cmd) {
case LIRC_GET_FEATURES:
result = put_user(ir->d.features, (unsigned long *)arg);
result = put_user(ir->d.features, (__u32 *)arg);
break;
case LIRC_GET_REC_MODE:
if (!(ir->d.features & LIRC_CAN_REC_MASK)) {
@ -551,7 +551,7 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
result = put_user(LIRC_REC2MODE
(ir->d.features & LIRC_CAN_REC_MASK),
(unsigned long *)arg);
(__u32 *)arg);
break;
case LIRC_SET_REC_MODE:
if (!(ir->d.features & LIRC_CAN_REC_MASK)) {
@ -559,7 +559,7 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
break;
}
result = get_user(mode, (unsigned long *)arg);
result = get_user(mode, (__u32 *)arg);
if (!result && !(LIRC_MODE2REC(mode) & ir->d.features))
result = -EINVAL;
/*
@ -568,7 +568,7 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
*/
break;
case LIRC_GET_LENGTH:
result = put_user(ir->d.code_length, (unsigned long *)arg);
result = put_user(ir->d.code_length, (__u32 *)arg);
break;
case LIRC_GET_MIN_TIMEOUT:
if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||
@ -577,7 +577,7 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
break;
}
result = put_user(ir->d.min_timeout, (unsigned long *)arg);
result = put_user(ir->d.min_timeout, (__u32 *)arg);
break;
case LIRC_GET_MAX_TIMEOUT:
if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||
@ -586,7 +586,7 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
break;
}
result = put_user(ir->d.max_timeout, (unsigned long *)arg);
result = put_user(ir->d.max_timeout, (__u32 *)arg);
break;
default:
result = -EINVAL;

4
include/media/lirc_dev.h
View File

@ -125,10 +125,10 @@ static inline unsigned int lirc_buffer_write(struct lirc_buffer *buf,
struct lirc_driver {
char name[40];
int minor;
unsigned long code_length;
__u32 code_length;
unsigned int buffer_size; /* in chunks holding one code each */
int sample_rate;
unsigned long features;
__u32 features;
unsigned int chunk_size;