genirq: irqchip: Add a mask calculation function

Some chips have weird bit mask access patterns instead of the linear
you expect. Allow them to calculate the cached mask themself.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Thomas Petazzoni <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: Russell King - ARM Linux <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Jean-Francois Moine <[email protected]>
Cc: [email protected]
Cc: Rob Herring <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Gregory Clement <[email protected]>
Cc: Gerlando Falauto <[email protected]>
Cc: Rob Landley <[email protected]>
Acked-by: Grant Likely <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Ezequiel Garcia <[email protected]>
Cc: [email protected]
Cc: Sebastian Hesselbarth <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

0 files changed, 0 insertions, 0 deletions