net: more timeouts that reach -1

with while (timeout-- > 0); timeout reaches -1 after the loop, so the tests
below are off by one. also don't do an '< 0' test on an unsigned.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 5 insertions, 4 deletions

diff --git a/drivers/net/arm/ks8695net.c b/drivers/net/arm/ks8695net.c
index 1cf2f949c0b4..f3a127434897 100644
--- a/drivers/net/arm/ks8695net.c
+++ b/drivers/net/arm/ks8695net.c
@@ -560,7 +560,7 @@ ks8695_reset(struct ks8695_priv *ksp)
                 msleep(1);
         }
 
-        if (reset_timeout == 0) {
+        if (reset_timeout < 0) {
                 dev_crit(ksp->dev,
                          "Timeout waiting for DMA engines to reset\n");
                 /* And blithely carry on */
diff --git a/drivers/net/jme.c b/drivers/net/jme.c
index 08b34051c646..a6e1a35a13cb 100644
--- a/drivers/net/jme.c
+++ b/drivers/net/jme.c
@@ -957,13 +957,14 @@ jme_process_receive(struct jme_adapter *jme, int limit)
                 goto out_inc;
 
         i = atomic_read(&rxring->next_to_clean);
-        while (limit-- > 0) {
+        while (limit > 0) {
                 rxdesc = rxring->desc;
                 rxdesc += i;
 
                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
                         goto out;
+                --limit;
 
                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
 
diff --git a/drivers/net/ucc_geth_mii.c b/drivers/net/ucc_geth_mii.c
index 54635911305c..0ada4edd56eb 100644
--- a/drivers/net/ucc_geth_mii.c
+++ b/drivers/net/ucc_geth_mii.c
@@ -107,7 +107,7 @@ int uec_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 static int uec_mdio_reset(struct mii_bus *bus)
 {
         struct ucc_mii_mng __iomem *regs = (void __iomem *)bus->priv;
-        unsigned int timeout = PHY_INIT_TIMEOUT;
+        int timeout = PHY_INIT_TIMEOUT;
 
         mutex_lock(&bus->mdio_lock);
 
@@ -123,7 +123,7 @@ static int uec_mdio_reset(struct mii_bus *bus)
 
         mutex_unlock(&bus->mdio_lock);
 
-        if (timeout <= 0) {
+        if (timeout < 0) {
                 printk(KERN_ERR "%s: The MII Bus is stuck!\n", bus->name);
                 return -EBUSY;
         }