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authorLance Roy <ldr709@gmail.com>2018-10-04 10:46:57 +0300
committerDavid S. Miller <davem@davemloft.net>2018-10-06 00:31:29 +0300
commit9a694c1de396e24565bfd05d0e36f72d10c3bce2 (patch)
tree1c814239aec1dc35317299a3477d52f2bfb43932 /drivers/atm
parent9798594cb9829a4edabdc58ad1b0d43fe4728b4f (diff)
downloadlinux-9a694c1de396e24565bfd05d0e36f72d10c3bce2.tar.xz
atm: nicstar: Replace spin_is_locked() with spin_trylock()
ns_poll() used spin_is_locked() + spin_lock() to get achieve the same thing as a spin_trylock(), so simplify it by using that instead. This is also a step towards possibly removing spin_is_locked(). Signed-off-by: Lance Roy <ldr709@gmail.com> Cc: Chas Williams <3chas3@gmail.com> Cc: <linux-atm-general@lists.sourceforge.net> Cc: <netdev@vger.kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm')
-rw-r--r--drivers/atm/nicstar.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
index cbec9adc01c7..ae4aa02e4dc6 100644
--- a/drivers/atm/nicstar.c
+++ b/drivers/atm/nicstar.c
@@ -2689,11 +2689,10 @@ static void ns_poll(struct timer_list *unused)
PRINTK("nicstar: Entering ns_poll().\n");
for (i = 0; i < num_cards; i++) {
card = cards[i];
- if (spin_is_locked(&card->int_lock)) {
+ if (!spin_trylock_irqsave(&card->int_lock, flags)) {
/* Probably it isn't worth spinning */
continue;
}
- spin_lock_irqsave(&card->int_lock, flags);
stat_w = 0;
stat_r = readl(card->membase + STAT);