staging: fsl-mc:Added support for atomic portals

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Refactored mc_send_command() to support two flavors of polling:
- preemptible (for non-atomic portals), which was already supported.
  It calls usleep_range() between polling iterations.
- non-preemptible (for atomic portals), which is needed when
  mc_send_command() is called with interrupts disabled.
  It calls udelay() between polling iterations.

Signed-off-by: J. German Rivera <German.Rivera@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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J. German Rivera 2015-10-17 15:33:14 -05:00 • committed by Greg Kroah-Hartman

parent 140305e77a

commit 3f95ad2185

2 changed files with 55 additions and 3 deletions

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53

drivers/staging/fsl-mc/bus/mc-sys.c

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5

drivers/staging/fsl-mc/include/mc-sys.h

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