diff options
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 1180d0be0bb4..1b6590f92543 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -31,6 +31,7 @@ #include <linux/pci.h> #include <linux/spinlock.h> +#include <asm/atomic.h> #include <asm/page.h> #include <asm/system.h> @@ -178,7 +179,7 @@ struct fw_ohci { int node_id; int generation; int request_generation; /* for timestamping incoming requests */ - u32 bus_seconds; + atomic_t bus_seconds; bool use_dualbuffer; bool old_uninorth; @@ -1434,7 +1435,7 @@ static irqreturn_t irq_handler(int irq, void *data) if (event & OHCI1394_cycle64Seconds) { cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer); if ((cycle_time & 0x80000000) == 0) - ohci->bus_seconds++; + atomic_inc(&ohci->bus_seconds); } return IRQ_HANDLED; @@ -1770,7 +1771,7 @@ static u64 ohci_get_bus_time(struct fw_card *card) u64 bus_time; cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer); - bus_time = ((u64) ohci->bus_seconds << 32) | cycle_time; + bus_time = ((u64)atomic_read(&ohci->bus_seconds) << 32) | cycle_time; return bus_time; } |