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| author | Takashi Iwai <tiwai@suse.de> | 2012-07-23 11:35:55 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-07-25 14:04:04 +0200 |
| commit | bc733d495267a23ef8660220d696c6e549ce30b3 (patch) | |
| tree | 008c758e246a885cf0f163cb61820028ac0e9a1a /sound/drivers | |
| parent | 6162552b0de6ba80937c3dd53e084967851cd199 (diff) | |
| download | lwn-bc733d495267a23ef8660220d696c6e549ce30b3.tar.gz lwn-bc733d495267a23ef8660220d696c6e549ce30b3.zip | |
ALSA: mpu401: Fix missing initialization of irq field
The irq field of struct snd_mpu401 is supposed to be initialized to -1.
Since it's set to zero as of now, a probing error before the irq
installation results in a kernel warning "Trying to free already-free
IRQ 0".
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=44821
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/drivers')
| -rw-r--r-- | sound/drivers/mpu401/mpu401_uart.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c index 1cff331a228e..4608c2ca43f8 100644 --- a/sound/drivers/mpu401/mpu401_uart.c +++ b/sound/drivers/mpu401/mpu401_uart.c @@ -554,6 +554,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device, spin_lock_init(&mpu->output_lock); spin_lock_init(&mpu->timer_lock); mpu->hardware = hardware; + mpu->irq = -1; if (! (info_flags & MPU401_INFO_INTEGRATED)) { int res_size = hardware == MPU401_HW_PC98II ? 4 : 2; mpu->res = request_region(port, res_size, "MPU401 UART"); |