copy_from_user_toio
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## Name

copy_from_user_toio — copy data from user-space to mmio-space

## Synopsis

`int copy_from_user_toio (` | volatile void __iomem * dst,
| const void __user * src,
| size_t count`)`;

## Arguments

`dst`

  the destination pointer on mmio-space

`src`

  the source pointer on user-space

`count`

  the data size to copy in bytes

## Description

Copies the data from user-space to mmio-space.

## Return

Zero if successful, or non-zero on failure.

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