[package]: switch: improve error message

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33464 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/switch/src/switch-robo.c b/package/switch/src/switch-robo.c
index 656e69f..5b849cb 100644 (file)
--- a/package/switch/src/switch-robo.c
+++ b/package/switch/src/switch-robo.c
@@ -96,12 +96,15 @@ static int do_ioctl(int cmd)
 static u16 mdio_read(__u16 phy_id, __u8 reg)
 {
        struct mii_ioctl_data *mii = if_mii(&robo.ifr);
+       int err;
+
        mii->phy_id = phy_id;
        mii->reg_num = reg;
 
-       if (do_ioctl(SIOCGMIIREG) < 0) {
+       err = do_ioctl(SIOCGMIIREG);
+       if (err < 0) {
                printk(KERN_ERR PFX
-                      "[%s:%d] SIOCGMIIREG failed!\n", __FILE__, __LINE__);
+                      "[%s:%d] SIOCGMIIREG failed! err: %i\n", __FILE__, __LINE__, err);
 
                return 0xffff;
        }
@@ -112,14 +115,16 @@ static u16 mdio_read(__u16 phy_id, __u8 reg)
 static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
 {
        struct mii_ioctl_data *mii = if_mii(&robo.ifr);
+       int err;
 
        mii->phy_id = phy_id;
        mii->reg_num = reg;
        mii->val_in = val;
 
-       if (do_ioctl(SIOCSMIIREG) < 0) {
+       err = do_ioctl(SIOCSMIIREG);
+       if (err < 0) {
                printk(KERN_ERR PFX
-                      "[%s:%d] SIOCSMIIREG failed!\n", __FILE__, __LINE__);
+                      "[%s:%d] SIOCSMIIREG failed! err: %i\n", __FILE__, __LINE__, err);
                return;
        }
 }