tree ee0666b2b415be4d22ae69532a6ddd363a01356c
parent 35dc5a538fb54bc30bdedf4c825da5c970b5ff90
author Soren Brinkmann <soren.brinkmann@xilinx.com> 1396657422 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1398381711 -0700

tty: xuartps: Don't write IRQ disable register to enable interrupts

A comment states, that, according to the data sheet, to enable
interrupts the disable register should be written, but the enable
register could be left untouched. And it suspsects a HW bug requiring
to write both.
Reviewing the data sheet, these statements seem wrong. Just as one would
expect. Writing to the enable/disable register enables/disables
interrupts.
Hence the misleading comment and needless write to the disable register
are removed from the enable sequence.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>