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-rw-r--r--sound/oss/dev_table.h2
-rw-r--r--sound/oss/midi_synth.c30
-rw-r--r--sound/oss/midi_synth.h2
-rw-r--r--sound/oss/opl3.c23
-rw-r--r--sound/oss/sequencer.c2
5 files changed, 31 insertions, 28 deletions
diff --git a/sound/oss/dev_table.h b/sound/oss/dev_table.h
index b7617bee638..0199a317c5a 100644
--- a/sound/oss/dev_table.h
+++ b/sound/oss/dev_table.h
@@ -271,7 +271,7 @@ struct synth_operations
void (*reset) (int dev);
void (*hw_control) (int dev, unsigned char *event);
int (*load_patch) (int dev, int format, const char __user *addr,
- int offs, int count, int pmgr_flag);
+ int count, int pmgr_flag);
void (*aftertouch) (int dev, int voice, int pressure);
void (*controller) (int dev, int voice, int ctrl_num, int value);
void (*panning) (int dev, int voice, int value);
diff --git a/sound/oss/midi_synth.c b/sound/oss/midi_synth.c
index 3c09374ea5b..2292c230d7e 100644
--- a/sound/oss/midi_synth.c
+++ b/sound/oss/midi_synth.c
@@ -476,7 +476,7 @@ EXPORT_SYMBOL(midi_synth_hw_control);
int
midi_synth_load_patch(int dev, int format, const char __user *addr,
- int offs, int count, int pmgr_flag)
+ int count, int pmgr_flag)
{
int orig_dev = synth_devs[dev]->midi_dev;
@@ -491,33 +491,29 @@ midi_synth_load_patch(int dev, int format, const char __user *addr,
if (!prefix_cmd(orig_dev, 0xf0))
return 0;
+ /* Invalid patch format */
if (format != SYSEX_PATCH)
- {
-/* printk("MIDI Error: Invalid patch format (key) 0x%x\n", format);*/
return -EINVAL;
- }
+
+ /* Patch header too short */
if (count < hdr_size)
- {
-/* printk("MIDI Error: Patch header too short\n");*/
return -EINVAL;
- }
+
count -= hdr_size;
/*
- * Copy the header from user space but ignore the first bytes which have
- * been transferred already.
+ * Copy the header from user space
*/
- if(copy_from_user(&((char *) &sysex)[offs], &(addr)[offs], hdr_size - offs))
+ if (copy_from_user(&sysex, addr, hdr_size))
return -EFAULT;
-
- if (count < sysex.len)
- {
-/* printk(KERN_WARNING "MIDI Warning: Sysex record too short (%d<%d)\n", count, (int) sysex.len);*/
+
+ /* Sysex record too short */
+ if ((unsigned)count < (unsigned)sysex.len)
sysex.len = count;
- }
- left = sysex.len;
- src_offs = 0;
+
+ left = sysex.len;
+ src_offs = 0;
for (i = 0; i < left && !signal_pending(current); i++)
{
diff --git a/sound/oss/midi_synth.h b/sound/oss/midi_synth.h
index 6bc9d00bc77..b64ddd6c4ab 100644
--- a/sound/oss/midi_synth.h
+++ b/sound/oss/midi_synth.h
@@ -8,7 +8,7 @@ int midi_synth_open (int dev, int mode);
void midi_synth_close (int dev);
void midi_synth_hw_control (int dev, unsigned char *event);
int midi_synth_load_patch (int dev, int format, const char __user * addr,
- int offs, int count, int pmgr_flag);
+ int count, int pmgr_flag);
void midi_synth_panning (int dev, int channel, int pressure);
void midi_synth_aftertouch (int dev, int channel, int pressure);
void midi_synth_controller (int dev, int channel, int ctrl_num, int value);
diff --git a/sound/oss/opl3.c b/sound/oss/opl3.c
index 938c48c4358..407cd677950 100644
--- a/sound/oss/opl3.c
+++ b/sound/oss/opl3.c
@@ -820,7 +820,7 @@ static void opl3_hw_control(int dev, unsigned char *event)
}
static int opl3_load_patch(int dev, int format, const char __user *addr,
- int offs, int count, int pmgr_flag)
+ int count, int pmgr_flag)
{
struct sbi_instrument ins;
@@ -830,11 +830,7 @@ static int opl3_load_patch(int dev, int format, const char __user *addr,
return -EINVAL;
}
- /*
- * What the fuck is going on here? We leave junk in the beginning
- * of ins and then check the field pretty close to that beginning?
- */
- if(copy_from_user(&((char *) &ins)[offs], addr + offs, sizeof(ins) - offs))
+ if (copy_from_user(&ins, addr, sizeof(ins)))
return -EFAULT;
if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR)
@@ -849,6 +845,10 @@ static int opl3_load_patch(int dev, int format, const char __user *addr,
static void opl3_panning(int dev, int voice, int value)
{
+
+ if (voice < 0 || voice >= devc->nr_voice)
+ return;
+
devc->voc[voice].panning = value;
}
@@ -1066,8 +1066,15 @@ static int opl3_alloc_voice(int dev, int chn, int note, struct voice_alloc_info
static void opl3_setup_voice(int dev, int voice, int chn)
{
- struct channel_info *info =
- &synth_devs[dev]->chn_info[chn];
+ struct channel_info *info;
+
+ if (voice < 0 || voice >= devc->nr_voice)
+ return;
+
+ if (chn < 0 || chn > 15)
+ return;
+
+ info = &synth_devs[dev]->chn_info[chn];
opl3_set_instr(dev, voice, info->pgm_num);
diff --git a/sound/oss/sequencer.c b/sound/oss/sequencer.c
index 5ea1098ac42..30bcfe470f8 100644
--- a/sound/oss/sequencer.c
+++ b/sound/oss/sequencer.c
@@ -241,7 +241,7 @@ int sequencer_write(int dev, struct file *file, const char __user *buf, int coun
return -ENXIO;
fmt = (*(short *) &event_rec[0]) & 0xffff;
- err = synth_devs[dev]->load_patch(dev, fmt, buf, p + 4, c, 0);
+ err = synth_devs[dev]->load_patch(dev, fmt, buf + p, c, 0);
if (err < 0)
return err;