locking/atomic, crypto/nx: Prepare for atomic64_read() conversion

The return type of atomic64_read() varies by architecture. It may return
long (e.g. powerpc), long long (e.g. arm), or s64 (e.g. x86_64). This is
somewhat painful, and mandates the use of explicit casts in some cases
(e.g. when printing the return value).

To ameliorate matters, subsequent patches will make the atomic64 API
consistently use s64.

As a preparatory step, this patch updates the nx-842 code to treat the
return value of atomic64_read() as s64, using explicit casts. These
casts will be removed once the s64 conversion is complete.

Signed-off-by: Mark Rutland <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

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