diff options
| author | Soren Brinkmann <soren.brinkmann@xilinx.com> | 2012-12-19 10:18:37 -0800 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2013-01-28 13:27:21 +0100 |
| commit | af7f032dba8ccf7ee430a48656d25565672a6074 (patch) | |
| tree | 00594280fae0fed8a1fdc951cd46104f63922188 | |
| parent | f184c5caa983940305b37f428a6bfc22105235e4 (diff) | |
arm: zynq: timer: Remove unnecessary register write
Acknowedging an interrupt requires to read the interrupt register
only. The write was only required to work around a bug in
the QEMU implementation of the TTC, which is fixed.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
| -rw-r--r-- | arch/arm/mach-zynq/timer.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c index 570491d37966..f1d224bf162d 100644 --- a/arch/arm/mach-zynq/timer.c +++ b/arch/arm/mach-zynq/timer.c @@ -121,8 +121,7 @@ static irqreturn_t xttcps_clock_event_interrupt(int irq, void *dev_id) struct xttcps_timer *timer = &xttce->xttc; /* Acknowledge the interrupt and call event handler */ - __raw_writel(__raw_readl(timer->base_addr + XTTCPS_ISR_OFFSET), - timer->base_addr + XTTCPS_ISR_OFFSET); + __raw_readl(timer->base_addr + XTTCPS_ISR_OFFSET); xttce->ce.event_handler(&xttce->ce); |