diff options
Diffstat (limited to 'features/rt/atm-eni-Use-tasklet_disable_in_atomic-in-the-send-ca.patch')
| -rw-r--r-- | features/rt/atm-eni-Use-tasklet_disable_in_atomic-in-the-send-ca.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/features/rt/atm-eni-Use-tasklet_disable_in_atomic-in-the-send-ca.patch b/features/rt/atm-eni-Use-tasklet_disable_in_atomic-in-the-send-ca.patch new file mode 100644 index 00000000..475b8b02 --- /dev/null +++ b/features/rt/atm-eni-Use-tasklet_disable_in_atomic-in-the-send-ca.patch @@ -0,0 +1,41 @@ +From 3a6d1acf6c1ff722cb9479fba99a7ea0c6c50ee7 Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Tue, 9 Mar 2021 09:42:14 +0100 +Subject: [PATCH 051/191] atm: eni: Use tasklet_disable_in_atomic() in the + send() callback + +The atmdev_ops::send callback which calls tasklet_disable() is invoked with +bottom halfs disabled from net_device_ops::ndo_start_xmit(). All other +invocations of tasklet_disable() in this driver happen in preemptible +context. + +Change the send() call to use tasklet_disable_in_atomic() which allows +tasklet_disable() to be made sleepable once the remaining atomic context +usage sites are cleaned up. + +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Cc: Chas Williams <3chas3@gmail.com> +Cc: linux-atm-general@lists.sourceforge.net +Cc: netdev@vger.kernel.org +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + drivers/atm/eni.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c +index b574cce98dc3..422753d52244 100644 +--- a/drivers/atm/eni.c ++++ b/drivers/atm/eni.c +@@ -2054,7 +2054,7 @@ static int eni_send(struct atm_vcc *vcc,struct sk_buff *skb) + } + submitted++; + ATM_SKB(skb)->vcc = vcc; +- tasklet_disable(&ENI_DEV(vcc->dev)->task); ++ tasklet_disable_in_atomic(&ENI_DEV(vcc->dev)->task); + res = do_tx(skb); + tasklet_enable(&ENI_DEV(vcc->dev)->task); + if (res == enq_ok) return 0; +-- +2.19.1 + |