USB: cxacru: Use appropriate logging for errors
When an error occurs, existing logging uses dbg() so the cause of a
problem is hard to determine. Error conditions shouldn't only be
properly reported with debugging enabled.
A side effect of this change is that when an uninitialised device is
started, a log message similar to the following is sent:
cxacru 5-2:1.0: receive of cm 0x90 failed (-104)
This is normal - the device did not respond so firmware will be loaded.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Acked-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index a73e714..a51eeed 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -482,7 +482,9 @@
int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
- dbg("too big transfer requested");
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
+ wbuflen, rbuflen);
ret = -ENOMEM;
goto fail;
}
@@ -493,8 +495,9 @@
init_completion(&instance->rcv_done);
ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
if (ret < 0) {
- dbg("submitting read urb for cm %#x failed", cm);
- ret = ret;
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
+ cm, ret);
goto fail;
}
@@ -510,27 +513,29 @@
init_completion(&instance->snd_done);
ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
if (ret < 0) {
- dbg("submitting write urb for cm %#x failed", cm);
- ret = ret;
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
+ cm, ret);
goto fail;
}
ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
if (ret < 0) {
- dbg("sending cm %#x failed", cm);
- ret = ret;
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
goto fail;
}
ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
if (ret < 0) {
- dbg("receiving cm %#x failed", cm);
- ret = ret;
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
goto fail;
}
if (actlen % CMD_PACKET_SIZE || !actlen) {
- dbg("response is not a positive multiple of %d: %#x",
- CMD_PACKET_SIZE, actlen);
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
+ cm, actlen);
ret = -EIO;
goto fail;
}
@@ -538,12 +543,16 @@
/* check the return status and copy the data to the output buffer, if needed */
for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
if (rbuf[offb] != cm) {
- dbg("wrong cm %#x in response", rbuf[offb]);
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
+ rbuf[offb], cm);
ret = -EIO;
goto fail;
}
if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
- dbg("response failed: %#x", rbuf[offb + 1]);
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
+ cm, rbuf[offb + 1]);
ret = -EIO;
goto fail;
}
@@ -582,14 +591,18 @@
for (offb = 0; offb < len; ) {
int l = le32_to_cpu(buf[offb++]);
if (l > stride || l > (len - offb) / 2) {
- dbg("wrong data length %#x in response", l);
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
+ cm, l);
ret = -EIO;
goto cleanup;
}
while (l--) {
offd = le32_to_cpu(buf[offb++]);
if (offd >= size) {
- dbg("wrong index %#x in response", offd);
+ if (printk_ratelimit())
+ usb_err(instance->usbatm, "wrong index #%x in response to cm #%x\n",
+ offd, cm);
ret = -EIO;
goto cleanup;
}