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authorEliot Blennerhassett <eblennerhassett@audioscience.com>2011-07-27 20:03:51 +1200
committerTakashi Iwai <tiwai@suse.de>2011-07-27 10:08:26 +0200
commit767cd365b22820df07b962b49ce04b220b98e537 (patch)
tree8e436adc58536dc73b16390d122140a67c5e93bb /sound/pci
parent45eebda7b4a73deb268b0cbcde06b603a2ba46a2 (diff)
ALSA: asihpi - bug fix pa use before init.
Fixes bug introduced by 1c073b67. Also declare pa local to block in which it is used. Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/asihpi/hpioctl.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/sound/pci/asihpi/hpioctl.c b/sound/pci/asihpi/hpioctl.c
index 65fcf4770731..e0cff0c72e51 100644
--- a/sound/pci/asihpi/hpioctl.c
+++ b/sound/pci/asihpi/hpioctl.c
@@ -107,7 +107,6 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
union hpi_response_buffer_v1 *hr;
u16 res_max_size;
u32 uncopied_bytes;
- struct hpi_adapter *pa = NULL;
int err = 0;
if (cmd != HPI_IOCTL_LINUX)
@@ -182,6 +181,7 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
/* -1=no data 0=read from user mem, 1=write to user mem */
int wrflag = -1;
u32 adapter = hm->h.adapter_index;
+ struct hpi_adapter *pa = &adapters[adapter];
if ((adapter > HPI_MAX_ADAPTERS) || (!pa->type)) {
hpi_init_response(&hr->r0, HPI_OBJ_ADAPTER,
@@ -197,9 +197,7 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
goto out;
}
- pa = &adapters[adapter];
-
- if (mutex_lock_interruptible(&adapters[adapter].mutex)) {
+ if (mutex_lock_interruptible(&pa->mutex)) {
err = -EINTR;
goto out;
}
@@ -235,8 +233,7 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
"stream buffer size %d\n",
size);
- mutex_unlock(&adapters
- [adapter].mutex);
+ mutex_unlock(&pa->mutex);
err = -EINVAL;
goto out;
}
@@ -277,7 +274,7 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
uncopied_bytes, size);
}
- mutex_unlock(&adapters[adapter].mutex);
+ mutex_unlock(&pa->mutex);
}
/* on return response size must be set */