[PORT FROM R2][REVERT ME]n_gsm: add dedicated traces in MUX for APIMR issues

BZ: 25958

This patch is an update for the MUX driver in the goal to add
dedicated traces to have input for the APIMR issues.

Change-Id: I040ea3f27ad0816d724b16dc7ecb887051ce065d
Orig-Change-Id: I2c9a660e6c48153dcd680bd6b8db8d1683cc3f7a
Signed-off-by: Guillaume Lucas <guillaumex.lucas@intel.com>
Reviewed-on: http://android.intel.com:8080/41335
Reviewed-by: Predon, Frederic <frederic.predon@intel.com>
Reviewed-by: Lebsir, SamiX <samix.lebsir@intel.com>
Tested-by: Lebsir, SamiX <samix.lebsir@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 3691079..6a99938 100644 (file)
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1552,8 +1552,7 @@ static void gsm_dlci_data(struct gsm_dlci *dlci, u8 *data, int clen)
        unsigned int modem = 0;
        int len = clen;
 
-       if (debug & 16)
-               pr_debug("%s: %d bytes for tty %p\n", __func__, len, tty);
+       pr_err("%s: %d bytes for tty %d\n", __func__, len, dlci->addr);
 
        if (tty) {
                switch (dlci->adaption)  {
@@ -1743,8 +1742,7 @@ static void gsm_queue(struct gsm_mux *gsm)
        }
        if (gsm->fcs != GOOD_FCS) {
                gsm->bad_fcs++;
-               if (debug & 4)
-                       pr_debug("BAD FCS %02x\n", gsm->fcs);
+               pr_err("BAD FCS %02x\n", gsm->fcs);
                return;
        }
        address = gsm->address >> 1;
@@ -1907,7 +1905,7 @@ static void gsm0_receive(struct gsm_mux *gsm, unsigned char c)
                        gsm->state = GSM_SEARCH;
                        break;
                }
-               pr_debug("wait for GSM0_SOF, while got 0x%x\n", (u32)c);
+               pr_err("wait for GSM0_SOF, while got 0x%x\n", (u32)c);
                break;
        }
 }
@@ -2633,7 +2631,7 @@ static int gsmld_ioctl(struct tty_struct *tty, struct file *file,
 
 static int gsm_mux_net_open(struct net_device *net)
 {
-       pr_debug("%s called\n", __func__);
+       pr_err("%s called\n", __func__);
        netif_start_queue(net);
        return 0;
 }
@@ -2659,6 +2657,7 @@ static void net_free(struct kref *ref)
        if (dlci->net) {
                dlci->adaption = 1;
                dlci->data = gsm_dlci_data;
+               pr_err("net_free %d", kfifo_len(dlci->fifo));
                unregister_netdev(dlci->net);
                free_netdev(dlci->net);
                dlci->net = 0;
@@ -2840,6 +2839,7 @@ static int gsm_create_network(struct gsm_dlci *dlci, struct gsm_netconfig *nc)
        mux_net->dlci = dlci;
        kref_init(&mux_net->ref);
        strncpy(nc->if_name, net->name, IFNAMSIZ); /* return net name */
+       pr_err("netif done");
        return net->ifindex;    /* return network index */
 
 error_ret:
@@ -3072,6 +3072,7 @@ static int gsmtty_ioctl(struct tty_struct *tty,
 
        switch (cmd) {
        case GSMIOC_ENABLE_NET:
+               pr_err("GSMIOC_ENABLE_NET");
                if (copy_from_user(&nc, (void __user *)arg, sizeof(nc)))
                        return -EFAULT;
                nc.if_name[IFNAMSIZ-1] = '\0';
@@ -3081,6 +3082,7 @@ static int gsmtty_ioctl(struct tty_struct *tty,
                        return -EFAULT;
                return index;
        case GSMIOC_DISABLE_NET:
+               pr_err("GSMIOC_DISABLE_NET");
                if (!capable(CAP_NET_ADMIN))
                        return -EPERM;
                gsm_destroy_network(dlci);