From: Jarod Wilson Date: Fri, 8 Oct 2010 20:24:21 +0000 (-0300) Subject: [media] IR/lirc: further ioctl portability fixups X-Git-Tag: firefly_0821_release~7613^2~3587^2~209 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=be1f985ffa49467f604318182616678b3e5184fd;p=firefly-linux-kernel-4.4.55.git [media] IR/lirc: further ioctl portability fixups >From Joris van Rantwijk : 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 Signed-off-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/IR/ir-lirc-codec.c b/drivers/media/IR/ir-lirc-codec.c index e63f757d5d72..c6d5b3eb1325 100644 --- a/drivers/media/IR/ir-lirc-codec.c +++ b/drivers/media/IR/ir-lirc-codec.c @@ -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; } diff --git a/drivers/media/IR/lirc_dev.c b/drivers/media/IR/lirc_dev.c index 0572053a7944..e4e4d99725e6 100644 --- a/drivers/media/IR/lirc_dev.c +++ b/drivers/media/IR/lirc_dev.c @@ -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; diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h index 71a896e7b208..54780a560d0e 100644 --- a/include/media/lirc_dev.h +++ b/include/media/lirc_dev.h @@ -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;