Re: [PATCH v2] checkpatch: Add warnings for use of mdelay()

From: AmÃrico Wang
Date: Tue Jul 27 2010 - 23:12:00 EST

On Tue, Jul 27, 2010 at 10:27:10AM -0700, Israel Schlesinger wrote:
>mdelay is a busy-wait loop which is wasteful. If at all possible,
>callers should use msleep instead of mdelay.
>The only time mdelay is really appropriate is in atomic context,
>however, delays of 1ms+ in atomic context are rather expensive, so
>a warning for this case is probably appropriate as well to encourage
>people to move such expensive delays outside of atomic context

Then udelay() is also preferred...
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