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| author | Clemens Ladisch <clemens@ladisch.de> | 2011-01-22 15:05:03 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2011-01-23 12:31:01 +0100 |
| commit | e71084af58cf15e6043338500eeaf6281d0a62af (patch) | |
| tree | d757d4891a4f93f7a07c1f12448d3be3be748fa1 /drivers/firewire/core-cdev.c | |
| parent | dbc9880fa731fe2482a706bbabb4165269233063 (diff) | |
| download | linux-e71084af58cf15e6043338500eeaf6281d0a62af.tar.bz2 | |
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-cdev.c')
| -rw-r--r-- | drivers/firewire/core-cdev.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index e0c13fb3ae22..62ac111af243 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1205,7 +1205,8 @@ static void iso_resource_work(struct work_struct *work) todo = r->todo; /* Allow 1000ms grace period for other reallocations. */ if (todo == ISO_RES_ALLOC && - time_is_after_jiffies(client->device->card->reset_jiffies + HZ)) { + time_before64(get_jiffies_64(), + client->device->card->reset_jiffies + HZ)) { schedule_iso_resource(r, DIV_ROUND_UP(HZ, 3)); skip = true; } else { |