diff options
| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-26 05:59:25 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-26 06:58:47 -0400 |
| commit | f8a695c4b43d02c89b8bba9ba6058fd5db1bc71d (patch) | |
| tree | 7334615c97868decbfb413a9391c3062812020ad | |
| parent | 6ccd228e0cfce2a4f44558422d25c60fcb1a6710 (diff) | |
media: v4l2-ioctl: rename a temp var that stores _IOC_SIZE(cmd)
Instead of just calling it as "size", let's name it as "ioc_size",
as it reflects better its contents.
As this is constant along the function, also mark it as const.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index a5dab16ff2d2..f48c505550e0 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -2833,15 +2833,15 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, size_t array_size = 0; void __user *user_ptr = NULL; void **kernel_ptr = NULL; - size_t size = _IOC_SIZE(cmd); + const size_t ioc_size = _IOC_SIZE(cmd); /* Copy arguments into temp kernel buffer */ if (_IOC_DIR(cmd) != _IOC_NONE) { - if (size <= sizeof(sbuf)) { + if (ioc_size <= sizeof(sbuf)) { parg = sbuf; } else { /* too big to allocate from stack */ - mbuf = kvmalloc(size, GFP_KERNEL); + mbuf = kvmalloc(ioc_size, GFP_KERNEL); if (NULL == mbuf) return -ENOMEM; parg = mbuf; @@ -2849,7 +2849,7 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, err = -EFAULT; if (_IOC_DIR(cmd) & _IOC_WRITE) { - unsigned int n = size; + unsigned int n = ioc_size; /* * In some cases, only a few fields are used as input, @@ -2870,11 +2870,11 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, goto out; /* zero out anything we don't copy from userspace */ - if (n < size) - memset((u8 *)parg + n, 0, size - n); + if (n < ioc_size) + memset((u8 *)parg + n, 0, ioc_size - n); } else { /* read-only ioctl */ - memset(parg, 0, size); + memset(parg, 0, ioc_size); } } @@ -2932,7 +2932,7 @@ out_array_args: switch (_IOC_DIR(cmd)) { case _IOC_READ: case (_IOC_WRITE | _IOC_READ): - if (copy_to_user((void __user *)arg, parg, size)) + if (copy_to_user((void __user *)arg, parg, ioc_size)) err = -EFAULT; break; } |