| From | Kamal Mostafa <> | Subject | [PATCH 3.13.y-ckt 043/156] net: irda: fix wait_until_sent poll timeout | Date | Tue, 7 Apr 2015 15:49:40 -0700 |
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3.13.11-ckt19 -stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold <johan@kernel.org>
commit 2c3fbe3cf28fbd7001545a92a83b4f8acfd9fa36 upstream.
In case an infinite timeout (0) is requested, the irda wait_until_sent implementation would use a zero poll timeout rather than the default 200ms.
Note that wait_until_sent is currently never called with a 0-timeout argument due to a bug in tty_wait_until_sent.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- net/irda/ircomm/ircomm_tty.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index 41ac7938..2ee29ed 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -820,7 +820,9 @@ static void ircomm_tty_wait_until_sent(struct tty_struct *tty, int timeout) orig_jiffies = jiffies; /* Set poll time to 200 ms */ - poll_time = IRDA_MIN(timeout, msecs_to_jiffies(200)); + poll_time = msecs_to_jiffies(200); + if (timeout) + poll_time = min_t(unsigned long, timeout, poll_time); spin_lock_irqsave(&self->spinlock, flags); while (self->tx_skb && self->tx_skb->len) { -- 1.9.1
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