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| author | Clemens Ladisch <clemens@ladisch.de> | 2011-01-22 17:05:03 +0300 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2011-01-23 14:31:01 +0300 |
| commit | e71084af58cf15e6043338500eeaf6281d0a62af (patch) | |
| tree | d757d4891a4f93f7a07c1f12448d3be3be748fa1 /drivers/firewire/core-device.c | |
| parent | dbc9880fa731fe2482a706bbabb4165269233063 (diff) | |
| download | linux-e71084af58cf15e6043338500eeaf6281d0a62af.tar.xz | |
firewire: core: fix card->reset_jiffies overflow
On a 32-bit machine with, e.g., HZ=1000, jiffies will overflow after
about 50 days, so if there are between 25 and 50 days between bus
resets, the card->reset_jiffies comparisons can get wrong results.
To fix this, ensure that this timestamp always uses 64 bits.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: "Stefan Richter" <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/core-device.c')
| -rw-r--r-- | drivers/firewire/core-device.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index 6113b896e790..57461923bacf 100644 --- a/drivers/firewire/core-device.c +++ b/drivers/firewire/core-device.c @@ -747,7 +747,8 @@ static void fw_device_shutdown(struct work_struct *work) container_of(work, struct fw_device, work.work); int minor = MINOR(device->device.devt); - if (time_is_after_jiffies(device->card->reset_jiffies + SHUTDOWN_DELAY) + if (time_before64(get_jiffies_64(), + device->card->reset_jiffies + SHUTDOWN_DELAY) && !list_empty(&device->card->link)) { schedule_delayed_work(&device->work, SHUTDOWN_DELAY); return; |