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authorMax Filippov <jcmvbkbc@gmail.com>2022-04-08 09:56:35 +0300
committerMax Filippov <jcmvbkbc@gmail.com>2022-05-02 05:51:20 +0300
commit9d7cafd5a735791cb7e0cb24eafd058f0a322b23 (patch)
treea46a3f189b82cddbe675361811fd94ba9fd8632d /arch/xtensa/platforms/iss
parent1030c8792313b9dd219aa48f265b00d72938b116 (diff)
downloadlinux-9d7cafd5a735791cb7e0cb24eafd058f0a322b23.tar.xz
xtensa: iss: drop opened_list logic from the network driver
opened_list is used to poll all opened devices in the timer callback, but there's individual timer that is associated with each device. Drop opened_list and only poll the device that is associated with the timer in the timer callback. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/platforms/iss')
-rw-r--r--arch/xtensa/platforms/iss/network.c53
1 files changed, 14 insertions, 39 deletions
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index be3aaaad8bee..409def002f55 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -38,9 +38,6 @@
#define ISS_NET_TIMER_VALUE (HZ / 10)
-static DEFINE_SPINLOCK(opened_lock);
-static LIST_HEAD(opened);
-
static DEFINE_SPINLOCK(devices_lock);
static LIST_HEAD(devices);
@@ -63,7 +60,6 @@ struct tuntap_info {
struct iss_net_private {
struct list_head device_list;
- struct list_head opened_list;
spinlock_t lock;
struct net_device *dev;
@@ -311,38 +307,28 @@ static int iss_net_rx(struct net_device *dev)
return pkt_len;
}
-static int iss_net_poll(void)
+static int iss_net_poll(struct iss_net_private *lp)
{
- struct list_head *ele;
int err, ret = 0;
- spin_lock(&opened_lock);
-
- list_for_each(ele, &opened) {
- struct iss_net_private *lp;
-
- lp = list_entry(ele, struct iss_net_private, opened_list);
-
- if (!netif_running(lp->dev))
- break;
+ if (!netif_running(lp->dev))
+ return 0;
- spin_lock(&lp->lock);
+ spin_lock(&lp->lock);
- while ((err = iss_net_rx(lp->dev)) > 0)
- ret++;
+ while ((err = iss_net_rx(lp->dev)) > 0)
+ ret++;
- spin_unlock(&lp->lock);
+ spin_unlock(&lp->lock);
- if (err < 0) {
- pr_err("Device '%s' read returned %d, shutting it down\n",
- lp->dev->name, err);
- dev_close(lp->dev);
- } else {
- /* FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ); */
- }
+ if (err < 0) {
+ pr_err("Device '%s' read returned %d, shutting it down\n",
+ lp->dev->name, err);
+ dev_close(lp->dev);
+ } else {
+ /* FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ); */
}
- spin_unlock(&opened_lock);
return ret;
}
@@ -351,7 +337,7 @@ static void iss_net_timer(struct timer_list *t)
{
struct iss_net_private *lp = from_timer(lp, t, timer);
- iss_net_poll();
+ iss_net_poll(lp);
spin_lock(&lp->lock);
mod_timer(&lp->timer, jiffies + lp->timer_val);
spin_unlock(&lp->lock);
@@ -378,12 +364,6 @@ static int iss_net_open(struct net_device *dev)
while ((err = iss_net_rx(dev)) > 0)
;
- spin_unlock_bh(&lp->lock);
- spin_lock_bh(&opened_lock);
- list_add(&lp->opened_list, &opened);
- spin_unlock_bh(&opened_lock);
- spin_lock_bh(&lp->lock);
-
timer_setup(&lp->timer, iss_net_timer, 0);
lp->timer_val = ISS_NET_TIMER_VALUE;
mod_timer(&lp->timer, jiffies + lp->timer_val);
@@ -399,10 +379,6 @@ static int iss_net_close(struct net_device *dev)
netif_stop_queue(dev);
spin_lock_bh(&lp->lock);
- spin_lock(&opened_lock);
- list_del(&opened);
- spin_unlock(&opened_lock);
-
del_timer_sync(&lp->timer);
lp->tp.close(lp);
@@ -520,7 +496,6 @@ static int iss_net_configure(int index, char *init)
lp = netdev_priv(dev);
*lp = (struct iss_net_private) {
.device_list = LIST_HEAD_INIT(lp->device_list),
- .opened_list = LIST_HEAD_INIT(lp->opened_list),
.dev = dev,
.index = index,
};