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| author | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2016-04-26 12:32:27 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-29 17:03:49 -0700 |
| commit | 3ed605bc8a0a688d8750a1e2eff39c854418c5cf (patch) | |
| tree | 323bdbf5c34309d04b56ba3222dff5b1ed286598 /include/linux/kernel.h | |
| parent | b5b7fe86668b4606ccd878a6c8a57f96247c5705 (diff) | |
| download | lwn-3ed605bc8a0a688d8750a1e2eff39c854418c5cf.tar.gz lwn-3ed605bc8a0a688d8750a1e2eff39c854418c5cf.zip | |
kernel.h: add u64_to_user_ptr()
This function had copies in 3 different files. Unify them in kernel.h.
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Daniel Vetter <daniel.vetter@intel.com> [drm/i915/]
Acked-by: Rob Clark <robdclark@gmail.com> [drm/msm/]
Acked-by: Lucas Stach <l.stach@pengutronix.de> [drm/etinav/]
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/kernel.h')
| -rw-r--r-- | include/linux/kernel.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 2f7775e229b0..f3e45cb0b6a2 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -53,6 +53,13 @@ #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) +#define u64_to_user_ptr(x) ( \ +{ \ + typecheck(u64, x); \ + (void __user *)(uintptr_t)x; \ +} \ +) + /* * This looks more complex than it should be. But we need to * get the type for the ~ right in round_down (it needs to be |