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author | Max Filippov <jcmvbkbc@gmail.com> | 2022-04-07 23:56:35 -0700 |
---|---|---|
committer | Max Filippov <jcmvbkbc@gmail.com> | 2022-05-01 19:51:20 -0700 |
commit | 9d7cafd5a735791cb7e0cb24eafd058f0a322b23 (patch) | |
tree | a46a3f189b82cddbe675361811fd94ba9fd8632d /arch/xtensa/platforms/iss | |
parent | 1030c8792313b9dd219aa48f265b00d72938b116 (diff) | |
download | linux-stable-9d7cafd5a735791cb7e0cb24eafd058f0a322b23.tar.gz linux-stable-9d7cafd5a735791cb7e0cb24eafd058f0a322b23.tar.bz2 linux-stable-9d7cafd5a735791cb7e0cb24eafd058f0a322b23.zip |
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.c | 53 |
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, }; |