At Wed, 26 Feb 2014 16:53:50 +0100, Takashi Iwai wrote:
Convert with dev_err() and co from snd_printk(), etc.
Signed-off-by: Takashi Iwai tiwai@suse.de
There was a use-after-free bug. The fixed patch is below.
Takashi
-- 8< -- From: Takashi Iwai tiwai@suse.de Subject: [PATCH v2] ALSA: 6fire: Use standard printk helpers
Convert with dev_err() and co from snd_printk(), etc.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/usb/6fire/chip.c | 8 +++--- sound/usb/6fire/comm.c | 4 +-- sound/usb/6fire/control.c | 18 +++++++----- sound/usb/6fire/firmware.c | 70 ++++++++++++++++++++++++---------------------- sound/usb/6fire/midi.c | 12 ++++---- sound/usb/6fire/pcm.c | 46 ++++++++++++++++-------------- 6 files changed, 86 insertions(+), 72 deletions(-)
diff --git a/sound/usb/6fire/chip.c b/sound/usb/6fire/chip.c index e0fe0d92db8c..dcddfc354ba6 100644 --- a/sound/usb/6fire/chip.c +++ b/sound/usb/6fire/chip.c @@ -106,7 +106,7 @@ static int usb6fire_chip_probe(struct usb_interface *intf, } if (regidx < 0) { mutex_unlock(®ister_mutex); - snd_printk(KERN_ERR PREFIX "too many cards registered.\n"); + dev_err(&intf->dev, "too many cards registered.\n"); return -ENODEV; } devices[regidx] = device; @@ -121,13 +121,13 @@ static int usb6fire_chip_probe(struct usb_interface *intf,
/* if we are here, card can be registered in alsa. */ if (usb_set_interface(device, 0, 0) != 0) { - snd_printk(KERN_ERR PREFIX "can't set first interface.\n"); + dev_err(&intf->dev, "can't set first interface.\n"); return -EIO; } ret = snd_card_new(&intf->dev, index[regidx], id[regidx], THIS_MODULE, sizeof(struct sfire_chip), &card); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "cannot create alsa card.\n"); + dev_err(&intf->dev, "cannot create alsa card.\n"); return ret; } strcpy(card->driver, "6FireUSB"); @@ -168,7 +168,7 @@ static int usb6fire_chip_probe(struct usb_interface *intf,
ret = snd_card_register(card); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "cannot register card."); + dev_err(&intf->dev, "cannot register card."); usb6fire_chip_destroy(chip); return ret; } diff --git a/sound/usb/6fire/comm.c b/sound/usb/6fire/comm.c index 23452ee617e1..161215d78d95 100644 --- a/sound/usb/6fire/comm.c +++ b/sound/usb/6fire/comm.c @@ -51,7 +51,7 @@ static void usb6fire_comm_receiver_handler(struct urb *urb) urb->status = 0; urb->actual_length = 0; if (usb_submit_urb(urb, GFP_ATOMIC) < 0) - snd_printk(KERN_WARNING PREFIX + dev_warn(&urb->dev->dev, "comm data receiver aborted.\n"); } } @@ -179,7 +179,7 @@ int usb6fire_comm_init(struct sfire_chip *chip) if (ret < 0) { kfree(rt->receiver_buffer); kfree(rt); - snd_printk(KERN_ERR PREFIX "cannot create comm data receiver."); + dev_err(&chip->dev->dev, "cannot create comm data receiver."); return ret; } chip->comm = rt; diff --git a/sound/usb/6fire/control.c b/sound/usb/6fire/control.c index f6434c245720..184e3987ac24 100644 --- a/sound/usb/6fire/control.c +++ b/sound/usb/6fire/control.c @@ -194,7 +194,8 @@ static int usb6fire_control_output_vol_put(struct snd_kcontrol *kcontrol, int changed = 0;
if (ch > 4) { - snd_printk(KERN_ERR PREFIX "Invalid channel in volume control."); + dev_err(&rt->chip->dev->dev, + "Invalid channel in volume control."); return -EINVAL; }
@@ -222,7 +223,8 @@ static int usb6fire_control_output_vol_get(struct snd_kcontrol *kcontrol, unsigned int ch = kcontrol->private_value;
if (ch > 4) { - snd_printk(KERN_ERR PREFIX "Invalid channel in volume control."); + dev_err(&rt->chip->dev->dev, + "Invalid channel in volume control."); return -EINVAL; }
@@ -240,7 +242,8 @@ static int usb6fire_control_output_mute_put(struct snd_kcontrol *kcontrol, u8 value = 0;
if (ch > 4) { - snd_printk(KERN_ERR PREFIX "Invalid channel in volume control."); + dev_err(&rt->chip->dev->dev, + "Invalid channel in volume control."); return -EINVAL; }
@@ -265,7 +268,8 @@ static int usb6fire_control_output_mute_get(struct snd_kcontrol *kcontrol, u8 value = rt->output_mute >> ch;
if (ch > 4) { - snd_printk(KERN_ERR PREFIX "Invalid channel in volume control."); + dev_err(&rt->chip->dev->dev, + "Invalid channel in volume control."); return -EINVAL; }
@@ -594,14 +598,14 @@ int usb6fire_control_init(struct sfire_chip *chip) ret = usb6fire_control_add_virtual(rt, chip->card, "Master Playback Volume", vol_elements); if (ret) { - snd_printk(KERN_ERR PREFIX "cannot add control.\n"); + dev_err(&chip->dev->dev, "cannot add control.\n"); kfree(rt); return ret; } ret = usb6fire_control_add_virtual(rt, chip->card, "Master Playback Switch", mute_elements); if (ret) { - snd_printk(KERN_ERR PREFIX "cannot add control.\n"); + dev_err(&chip->dev->dev, "cannot add control.\n"); kfree(rt); return ret; } @@ -611,7 +615,7 @@ int usb6fire_control_init(struct sfire_chip *chip) ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt)); if (ret < 0) { kfree(rt); - snd_printk(KERN_ERR PREFIX "cannot add control.\n"); + dev_err(&chip->dev->dev, "cannot add control.\n"); return ret; } i++; diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c index 780bf3f62d28..3b02e54b8f6d 100644 --- a/sound/usb/6fire/firmware.c +++ b/sound/usb/6fire/firmware.c @@ -219,16 +219,16 @@ static int usb6fire_fw_ezusb_upload( ret = request_firmware(&fw, fwname, &device->dev); if (ret < 0) { kfree(rec); - snd_printk(KERN_ERR PREFIX "error requesting ezusb " - "firmware %s.\n", fwname); + dev_err(&intf->dev, + "error requesting ezusb firmware %s.\n", fwname); return ret; } ret = usb6fire_fw_ihex_init(fw, rec); if (ret < 0) { kfree(rec); release_firmware(fw); - snd_printk(KERN_ERR PREFIX "error validating ezusb " - "firmware %s.\n", fwname); + dev_err(&intf->dev, + "error validating ezusb firmware %s.\n", fwname); return ret; } /* upload firmware image */ @@ -237,8 +237,9 @@ static int usb6fire_fw_ezusb_upload( if (ret < 0) { kfree(rec); release_firmware(fw); - snd_printk(KERN_ERR PREFIX "unable to upload ezusb " - "firmware %s: begin message.\n", fwname); + dev_err(&intf->dev, + "unable to upload ezusb firmware %s: begin message.\n", + fwname); return ret; }
@@ -248,8 +249,9 @@ static int usb6fire_fw_ezusb_upload( if (ret < 0) { kfree(rec); release_firmware(fw); - snd_printk(KERN_ERR PREFIX "unable to upload ezusb " - "firmware %s: data urb.\n", fwname); + dev_err(&intf->dev, + "unable to upload ezusb firmware %s: data urb.\n", + fwname); return ret; } } @@ -260,8 +262,9 @@ static int usb6fire_fw_ezusb_upload( ret = usb6fire_fw_ezusb_write(device, 0xa0, postaddr, postdata, postlen); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "unable to upload ezusb " - "firmware %s: post urb.\n", fwname); + dev_err(&intf->dev, + "unable to upload ezusb firmware %s: post urb.\n", + fwname); return ret; } } @@ -269,8 +272,9 @@ static int usb6fire_fw_ezusb_upload( data = 0x00; /* resume ezusb cpu */ ret = usb6fire_fw_ezusb_write(device, 0xa0, 0xe600, &data, 1); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "unable to upload ezusb " - "firmware %s: end message.\n", fwname); + dev_err(&intf->dev, + "unable to upload ezusb firmware %s: end message.\n", + fwname); return ret; } return 0; @@ -292,7 +296,7 @@ static int usb6fire_fw_fpga_upload(
ret = request_firmware(&fw, fwname, &device->dev); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "unable to get fpga firmware %s.\n", + dev_err(&intf->dev, "unable to get fpga firmware %s.\n", fwname); kfree(buffer); return -EIO; @@ -305,8 +309,8 @@ static int usb6fire_fw_fpga_upload( if (ret < 0) { kfree(buffer); release_firmware(fw); - snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: " - "begin urb.\n"); + dev_err(&intf->dev, + "unable to upload fpga firmware: begin urb.\n"); return ret; }
@@ -318,8 +322,8 @@ static int usb6fire_fw_fpga_upload( if (ret < 0) { release_firmware(fw); kfree(buffer); - snd_printk(KERN_ERR PREFIX "unable to upload fpga " - "firmware: fw urb.\n"); + dev_err(&intf->dev, + "unable to upload fpga firmware: fw urb.\n"); return ret; } } @@ -328,8 +332,8 @@ static int usb6fire_fw_fpga_upload(
ret = usb6fire_fw_ezusb_write(device, 9, 0, NULL, 0); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: " - "end urb.\n"); + dev_err(&intf->dev, + "unable to upload fpga firmware: end urb.\n"); return ret; } return 0; @@ -338,7 +342,7 @@ static int usb6fire_fw_fpga_upload( /* check, if the firmware version the devices has currently loaded * is known by this driver. 'version' needs to have 4 bytes version * info data. */ -static int usb6fire_fw_check(u8 *version) +static int usb6fire_fw_check(struct usb_interface *intf, const u8 *version) { int i;
@@ -346,7 +350,7 @@ static int usb6fire_fw_check(u8 *version) if (!memcmp(version, known_fw_versions + i, 2)) return 0;
- snd_printk(KERN_ERR PREFIX "invalid fimware version in device: %4ph. " + dev_err(&intf->dev, "invalid fimware version in device: %4ph. " "please reconnect to power. if this failure " "still happens, check your firmware installation.", version); @@ -364,16 +368,16 @@ int usb6fire_fw_init(struct usb_interface *intf)
ret = usb6fire_fw_ezusb_read(device, 1, 0, buffer, 8); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "unable to receive device " - "firmware state.\n"); + dev_err(&intf->dev, + "unable to receive device firmware state.\n"); return ret; } if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) { - snd_printk(KERN_ERR PREFIX "unknown device firmware state " - "received from device: "); + dev_err(&intf->dev, + "unknown device firmware state received from device:"); for (i = 0; i < 8; i++) - snd_printk("%02x ", buffer[i]); - snd_printk("\n"); + printk(KERN_CONT "%02x ", buffer[i]); + printk(KERN_CONT "\n"); return -EIO; } /* do we need fpga loader ezusb firmware? */ @@ -386,7 +390,7 @@ int usb6fire_fw_init(struct usb_interface *intf) } /* do we need fpga firmware and application ezusb firmware? */ else if (buffer[3] == 0x02) { - ret = usb6fire_fw_check(buffer + 4); + ret = usb6fire_fw_check(intf, buffer + 4); if (ret < 0) return ret; ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin"); @@ -402,14 +406,14 @@ int usb6fire_fw_init(struct usb_interface *intf) } /* all fw loaded? */ else if (buffer[3] == 0x03) - return usb6fire_fw_check(buffer + 4); + return usb6fire_fw_check(intf, buffer + 4); /* unknown data? */ else { - snd_printk(KERN_ERR PREFIX "unknown device firmware state " - "received from device: "); + dev_err(&intf->dev, + "unknown device firmware state received from device: "); for (i = 0; i < 8; i++) - snd_printk("%02x ", buffer[i]); - snd_printk("\n"); + printk(KERN_CONT "%02x ", buffer[i]); + printk(KERN_CONT "\n"); return -EIO; } return 0; diff --git a/sound/usb/6fire/midi.c b/sound/usb/6fire/midi.c index f3dd7266c391..3d410969553e 100644 --- a/sound/usb/6fire/midi.c +++ b/sound/usb/6fire/midi.c @@ -41,8 +41,9 @@ static void usb6fire_midi_out_handler(struct urb *urb)
ret = usb_submit_urb(urb, GFP_ATOMIC); if (ret < 0) - snd_printk(KERN_ERR PREFIX "midi out urb " - "submit failed: %d\n", ret); + dev_err(&urb->dev->dev, + "midi out urb submit failed: %d\n", + ret); } else /* no more data to transmit */ rt->out = NULL; } @@ -94,8 +95,9 @@ static void usb6fire_midi_out_trigger(
ret = usb_submit_urb(urb, GFP_ATOMIC); if (ret < 0) - snd_printk(KERN_ERR PREFIX "midi out urb " - "submit failed: %d\n", ret); + dev_err(&urb->dev->dev, + "midi out urb submit failed: %d\n", + ret); else rt->out = alsa_sub; } @@ -181,7 +183,7 @@ int usb6fire_midi_init(struct sfire_chip *chip) if (ret < 0) { kfree(rt->out_buffer); kfree(rt); - snd_printk(KERN_ERR PREFIX "unable to create midi.\n"); + dev_err(&chip->dev->dev, "unable to create midi.\n"); return ret; } rt->instance->private_data = rt; diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c index b5eb97fdc842..ba40489b2de4 100644 --- a/sound/usb/6fire/pcm.c +++ b/sound/usb/6fire/pcm.c @@ -79,32 +79,35 @@ static int usb6fire_pcm_set_rate(struct pcm_runtime *rt) ctrl_rt->usb_streaming = false; ret = ctrl_rt->update_streaming(ctrl_rt); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error stopping streaming while " - "setting samplerate %d.\n", rates[rt->rate]); + dev_err(&rt->chip->dev->dev, + "error stopping streaming while setting samplerate %d.\n", + rates[rt->rate]); return ret; }
ret = ctrl_rt->set_rate(ctrl_rt, rt->rate); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error setting samplerate %d.\n", - rates[rt->rate]); + dev_err(&rt->chip->dev->dev, + "error setting samplerate %d.\n", + rates[rt->rate]); return ret; }
ret = ctrl_rt->set_channels(ctrl_rt, OUT_N_CHANNELS, IN_N_CHANNELS, false, false); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error initializing channels " - "while setting samplerate %d.\n", - rates[rt->rate]); + dev_err(&rt->chip->dev->dev, + "error initializing channels while setting samplerate %d.\n", + rates[rt->rate]); return ret; }
ctrl_rt->usb_streaming = true; ret = ctrl_rt->update_streaming(ctrl_rt); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error starting streaming while " - "setting samplerate %d.\n", rates[rt->rate]); + dev_err(&rt->chip->dev->dev, + "error starting streaming while setting samplerate %d.\n", + rates[rt->rate]); return ret; }
@@ -124,7 +127,7 @@ static struct pcm_substream *usb6fire_pcm_get_substream( return &rt->playback; else if (alsa_sub->stream == SNDRV_PCM_STREAM_CAPTURE) return &rt->capture; - snd_printk(KERN_ERR PREFIX "error getting pcm substream slot.\n"); + dev_err(&rt->chip->dev->dev, "error getting pcm substream slot.\n"); return NULL; }
@@ -257,7 +260,7 @@ static void usb6fire_pcm_playback(struct pcm_substream *sub, else if (alsa_rt->format == SNDRV_PCM_FORMAT_S24_LE) dest = (u32 *) (urb->buffer); else { - snd_printk(KERN_ERR PREFIX "Unknown sample format."); + dev_err(&rt->chip->dev->dev, "Unknown sample format."); return; }
@@ -307,8 +310,8 @@ static void usb6fire_pcm_in_urb_handler(struct urb *usb_urb) }
if (rt->stream_state == STREAM_DISABLED) { - snd_printk(KERN_ERR PREFIX "internal error: " - "stream disabled in in-urb handler.\n"); + dev_err(&rt->chip->dev->dev, + "internal error: stream disabled in in-urb handler.\n"); return; }
@@ -410,7 +413,7 @@ static int usb6fire_pcm_open(struct snd_pcm_substream *alsa_sub)
if (!sub) { mutex_unlock(&rt->stream_mutex); - snd_printk(KERN_ERR PREFIX "invalid stream type.\n"); + dev_err(&rt->chip->dev->dev, "invalid stream type.\n"); return -EINVAL; }
@@ -481,8 +484,9 @@ static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub) break; if (rt->rate == ARRAY_SIZE(rates)) { mutex_unlock(&rt->stream_mutex); - snd_printk("invalid rate %d in prepare.\n", - alsa_rt->rate); + dev_err(&rt->chip->dev->dev, + "invalid rate %d in prepare.\n", + alsa_rt->rate); return -EINVAL; }
@@ -494,8 +498,8 @@ static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub) ret = usb6fire_pcm_stream_start(rt); if (ret) { mutex_unlock(&rt->stream_mutex); - snd_printk(KERN_ERR PREFIX - "could not start pcm stream.\n"); + dev_err(&rt->chip->dev->dev, + "could not start pcm stream.\n"); return ret; } } @@ -650,7 +654,7 @@ int usb6fire_pcm_init(struct sfire_chip *chip) if (ret < 0) { usb6fire_pcm_buffers_destroy(rt); kfree(rt); - snd_printk(KERN_ERR PREFIX "cannot create pcm instance.\n"); + dev_err(&chip->dev->dev, "cannot create pcm instance.\n"); return ret; }
@@ -662,8 +666,8 @@ int usb6fire_pcm_init(struct sfire_chip *chip) if (ret) { usb6fire_pcm_buffers_destroy(rt); kfree(rt); - snd_printk(KERN_ERR PREFIX - "error preallocating pcm buffers.\n"); + dev_err(&chip->dev->dev, + "error preallocating pcm buffers.\n"); return ret; } rt->instance = pcm;