[alsa-devel] [PATCH 48/48] ALSA: 6fire: Use standard printk helpers
Takashi Iwai
tiwai at suse.de
Wed Feb 26 17:39:14 CET 2014
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 at suse.de>
There was a use-after-free bug. The fixed patch is below.
Takashi
-- 8< --
From: Takashi Iwai <tiwai at 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 at 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;
--
1.9.0
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