diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wan/cosa.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c index 297ea340ca3d..372dffc2d355 100644 --- a/drivers/net/wan/cosa.c +++ b/drivers/net/wan/cosa.c @@ -995,6 +995,7 @@ static int cosa_fasync(struct inode *inode, struct file *file, int on) static inline int cosa_reset(struct cosa_data *cosa) { char idstring[COSA_MAX_ID_STRING]; + if (cosa->usage > 1) pr_info("cosa%d: WARNING: reset requested with cosa->usage > 1 (%d). Odd things may happen.\n", cosa->num, cosa->usage); @@ -1109,6 +1110,7 @@ static inline int cosa_start(struct cosa_data *cosa, int address) static inline int cosa_getidstr(struct cosa_data *cosa, char __user *string) { int l = strlen(cosa->id_string)+1; + if (copy_to_user(string, cosa->id_string, l)) return -EFAULT; return l; @@ -1118,6 +1120,7 @@ static inline int cosa_getidstr(struct cosa_data *cosa, char __user *string) static inline int cosa_gettype(struct cosa_data *cosa, char __user *string) { int l = strlen(cosa->type)+1; + if (copy_to_user(string, cosa->type, l)) return -EFAULT; return l; @@ -1127,6 +1130,7 @@ static int cosa_ioctl_common(struct cosa_data *cosa, struct channel_data *channel, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; + switch (cmd) { case COSAIORSET: /* Reset the device */ if (!capable(CAP_NET_ADMIN)) @@ -1172,6 +1176,7 @@ static int cosa_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { int rv; struct channel_data *chan = dev_to_chan(dev); + rv = cosa_ioctl_common(chan->cosa, chan, cmd, (unsigned long)ifr->ifr_data); if (rv != -ENOIOCTLCMD) @@ -1356,6 +1361,7 @@ static int cosa_dma_able(struct channel_data *chan, char *buf, int len) { static int count; unsigned long b = (unsigned long)buf; + if (b+len >= MAX_DMA_ADDRESS) return 0; if ((b^ (b+len)) & 0x10000) { @@ -1468,6 +1474,7 @@ static int readmem(struct cosa_data *cosa, char __user *microcode, int length, i while (length--) { char c; int i; + if ((i=get_wait_data(cosa)) == -1) { pr_info("0x%04x bytes remaining\n", length); return -11; @@ -1545,6 +1552,7 @@ static int get_wait_data(struct cosa_data *cosa) /* read data and return them */ if (cosa_getstatus(cosa) & SR_RX_RDY) { short r; + r = cosa_getdata8(cosa); #if 0 pr_info("get_wait_data returning after %d retries\n", @@ -1568,6 +1576,7 @@ static int get_wait_data(struct cosa_data *cosa) static int put_wait_data(struct cosa_data *cosa, int data) { int retries = 1000; + while (--retries) { /* read data and return them */ if (cosa_getstatus(cosa) & SR_TX_RDY) { @@ -1659,6 +1668,7 @@ static inline void tx_interrupt(struct cosa_data *cosa, int status) if (!test_bit(IRQBIT, &cosa->rxtx)) { /* flow control, see the comment above */ int i=0; + if (!cosa->txbitmap) { pr_warn("%s: No channel wants data in TX IRQ. Expect DMA timeout.\n", cosa->name); @@ -1743,6 +1753,7 @@ static inline void tx_interrupt(struct cosa_data *cosa, int status) if (cosa->busmaster) { unsigned long addr = virt_to_bus(cosa->txbuf); int count=0; + pr_info("busmaster IRQ\n"); while (!(cosa_getstatus(cosa)&SR_TX_RDY)) { count++; @@ -1873,6 +1884,7 @@ reject: /* Reject the packet */ static inline void eot_interrupt(struct cosa_data *cosa, int status) { unsigned long flags, flags1; + spin_lock_irqsave(&cosa->lock, flags); flags1 = claim_dma_lock(); disable_dma(cosa->dma); @@ -1880,6 +1892,7 @@ static inline void eot_interrupt(struct cosa_data *cosa, int status) release_dma_lock(flags1); if (test_bit(TXBIT, &cosa->rxtx)) { struct channel_data *chan = cosa->chan+cosa->txchan; + if (chan->tx_done) if (chan->tx_done(chan, cosa->txsize)) clear_bit(chan->num, &cosa->txbitmap); @@ -1887,6 +1900,7 @@ static inline void eot_interrupt(struct cosa_data *cosa, int status) #ifdef DEBUG_DATA { int i; + pr_info("cosa%dc%d: done rx(0x%x)", cosa->num, cosa->rxchan->num, cosa->rxsize); for (i=0; i<cosa->rxsize; i++) @@ -1970,6 +1984,7 @@ again: static void debug_status_in(struct cosa_data *cosa, int status) { char *s; + switch (status & SR_CMD_FROM_SRP_MASK) { case SR_UP_REQUEST: s = "RX_REQ"; |