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2017-02-24include/linux/iopoll.h: include <linux/ktime.h> instead of <linux/hrtimer.h>Masahiro Yamada1-1/+1
The timer APIs this header needs are ktime_get(), ktime_add_us(), and ktime_compare(). So, including <linux/ktime.h> seems enough. This commit will cut unnecessary header file parsing. Link: http://lkml.kernel.org/r/1481679225-10885-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-01-19iopoll: Introduce memory-mapped IO polling macrosMatt Wagantall1-0/+144
It is sometimes necessary to poll a memory-mapped register until its value satisfies some condition. Introduce a family of convenience macros that do this. Tight-looping, sleeping, and timing out can all be accomplished using these macros. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Robert Elliott <elliott@hp.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Matt Wagantall <mattw@codeaurora.org> Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>