tree 4876c904feadff354e9da9c21ce7e6b6d77a458b
parent 9b7882515864117d0015a3484c0ba0eee6713de9
author Milton Miller <miltonm@bga.com> 1306269258 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1306381139 +1000

powerpc: Fix irq_free_virt by adjusting bounds before loop

Instead of looping over each irq and checking against the irq array
bounds, adjust the bounds before looping.

The old code will not free any irq if the irq + count is above
irq_virq_count because the test in the loop is testing irq + count
instead of irq + i.

This code checks the limits to avoid unsigned integer overflows.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>