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>
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index e0c13fb..62ac111 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -1205,7 +1205,8 @@
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 {
