diff options
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-mailbox.c')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-mailbox.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/media/video/ivtv/ivtv-mailbox.c b/drivers/media/video/ivtv/ivtv-mailbox.c index 13a6c374d2db..1b5c0ac09a85 100644 --- a/drivers/media/video/ivtv/ivtv-mailbox.c +++ b/drivers/media/video/ivtv/ivtv-mailbox.c @@ -177,7 +177,8 @@ static int get_mailbox(struct ivtv *itv, struct ivtv_mailbox_data *mbdata, int f /* Sleep before a retry, if not atomic */ if (!(flags & API_NO_WAIT_MB)) { - if (jiffies - then > msecs_to_jiffies(10*retries)) + if (time_after(jiffies, + then + msecs_to_jiffies(10*retries))) break; ivtv_msleep_timeout(10, 0); } @@ -244,7 +245,9 @@ static int ivtv_api_call(struct ivtv *itv, int cmd, int args, u32 data[]) data, then just return 0 as there is no need to issue this command again. Just an optimization to prevent unnecessary use of mailboxes. */ if (itv->api_cache[cmd].last_jiffies && - jiffies - itv->api_cache[cmd].last_jiffies < msecs_to_jiffies(1800000) && + time_before(jiffies, + itv->api_cache[cmd].last_jiffies + + msecs_to_jiffies(1800000)) && !memcmp(data, itv->api_cache[cmd].data, sizeof(itv->api_cache[cmd].data))) { itv->api_cache[cmd].last_jiffies = jiffies; return 0; @@ -299,7 +302,7 @@ static int ivtv_api_call(struct ivtv *itv, int cmd, int args, u32 data[]) } } while (!(readl(&mbox->flags) & IVTV_MBOX_FIRMWARE_DONE)) { - if (jiffies - then > api_timeout) { + if (time_after(jiffies, then + api_timeout)) { IVTV_DEBUG_WARN("Could not get result (%s)\n", api_info[cmd].name); /* reset the mailbox, but it is likely too late already */ write_sync(0, &mbox->flags); @@ -311,7 +314,7 @@ static int ivtv_api_call(struct ivtv *itv, int cmd, int args, u32 data[]) else ivtv_msleep_timeout(1, 0); } - if (jiffies - then > msecs_to_jiffies(100)) + if (time_after(jiffies, then + msecs_to_jiffies(100))) IVTV_DEBUG_WARN("%s took %u jiffies\n", api_info[cmd].name, jiffies_to_msecs(jiffies - then)); |