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firewire: core: fix card->reset_jiffies overflow

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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>
This commit is contained in:
Clemens Ladisch
2011-01-22 15:05:03 +01:00
committed by Stefan Richter
parent dbc9880fa7
commit e71084af58
5 changed files with 9 additions and 6 deletions
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2
drivers/firewire/core-topology.c
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@ -545,7 +545,7 @@ void fw_core_handle_bus_reset(struct fw_card *card, int node_id, int generation,
*/
smp_wmb();
card->generation = generation;
card->reset_jiffies = jiffies;
card->reset_jiffies = get_jiffies_64();
card->bm_node_id = 0xffff;
card->bm_abdicate = bm_abdicate;
fw_schedule_bm_work(card, 0);