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path: root/drivers/serial/zs.c
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Diffstat (limited to 'drivers/serial/zs.c')
-rw-r--r--drivers/serial/zs.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/serial/zs.c b/drivers/serial/zs.c
index 9e6a873f8203..d8c2809b1ab6 100644
--- a/drivers/serial/zs.c
+++ b/drivers/serial/zs.c
@@ -231,7 +231,7 @@ static int zs_receive_drain(struct zs_port *zport)
{
int loops = 10000;
- while ((read_zsreg(zport, R0) & Rx_CH_AV) && loops--)
+ while ((read_zsreg(zport, R0) & Rx_CH_AV) && --loops)
read_zsdata(zport);
return loops;
}
@@ -241,7 +241,7 @@ static int zs_transmit_drain(struct zs_port *zport, int irq)
struct zs_scc *scc = zport->scc;
int loops = 10000;
- while (!(read_zsreg(zport, R0) & Tx_BUF_EMP) && loops--) {
+ while (!(read_zsreg(zport, R0) & Tx_BUF_EMP) && --loops) {
zs_spin_unlock_cond_irq(&scc->zlock, irq);
udelay(2);
zs_spin_lock_cond_irq(&scc->zlock, irq);
@@ -254,7 +254,7 @@ static int zs_line_drain(struct zs_port *zport, int irq)
struct zs_scc *scc = zport->scc;
int loops = 10000;
- while (!(read_zsreg(zport, R1) & ALL_SNT) && loops--) {
+ while (!(read_zsreg(zport, R1) & ALL_SNT) && --loops) {
zs_spin_unlock_cond_irq(&scc->zlock, irq);
udelay(2);
zs_spin_lock_cond_irq(&scc->zlock, irq);