diff options
| author | Jérôme Pouiller <jerome.pouiller@silabs.com> | 2020-01-15 13:55:06 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-16 20:59:51 +0100 |
| commit | def39be019b6494acd3570ce6f3f11ba1c3203a3 (patch) | |
| tree | 92c2c482393ec7f333f99e9a6d96a7796aacde14 /drivers/staging/wfx | |
| parent | 4e1514c940fc64e7fb922a9390742f8e28a460ae (diff) | |
staging: wfx: fix possible overflow on jiffies comparaison
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It is recommended to use function time_*() to compare jiffies.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200115135338.14374-45-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/wfx')
| -rw-r--r-- | drivers/staging/wfx/data_tx.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c index 60459299a3a9..704ebfe1cd05 100644 --- a/drivers/staging/wfx/data_tx.c +++ b/drivers/staging/wfx/data_tx.c @@ -270,8 +270,7 @@ void wfx_tx_policy_init(struct wfx_vif *wvif) static int wfx_alloc_link_id(struct wfx_vif *wvif, const u8 *mac) { int i, ret = 0; - unsigned long max_inactivity = 0; - unsigned long now = jiffies; + unsigned long oldest; spin_lock_bh(&wvif->ps_state_lock); for (i = 0; i < WFX_MAX_STA_IN_AP_MODE; ++i) { @@ -280,13 +279,10 @@ static int wfx_alloc_link_id(struct wfx_vif *wvif, const u8 *mac) break; } else if (wvif->link_id_db[i].status != WFX_LINK_HARD && !wvif->wdev->tx_queue_stats.link_map_cache[i + 1]) { - unsigned long inactivity = - now - wvif->link_id_db[i].timestamp; - - if (inactivity < max_inactivity) - continue; - max_inactivity = inactivity; - ret = i + 1; + if (!ret || time_after(oldest, wvif->link_id_db[i].timestamp)) { + oldest = wvif->link_id_db[i].timestamp; + ret = i + 1; + } } } |