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SubjectPATCH: sonicvibes / pci_enabled_device and error returns
Hi,

this moves pci_enable_device() before any resource access in probe() and
cleans up the error return values. No functional changes.

Ciao, Marcus

Index: drivers/sound/sonicvibes.c
===================================================================
RCS file: /build/mm/work/repository/linux-mm/drivers/sound/sonicvibes.c,v
retrieving revision 1.10
diff -u -r1.10 sonicvibes.c
--- drivers/sound/sonicvibes.c 2001/05/03 13:16:27 1.10
+++ drivers/sound/sonicvibes.c 2001/05/18 10:32:32
@@ -92,7 +92,9 @@
* Tjeerd Mulder <tjeerd.mulder@fujitsu-siemens.com>
* 31.01.2001 0.29 Register/Unregister gameport
* Fix SETTRIGGER non OSS API conformity
+ * 18.05.2001 0.30 PCI probing and error values cleaned up by Marcus
+ * Meissner <mm@caldera.de>
*
*/

/*****************************************************************************/
@@ -2504,21 +2507,24 @@
static const char __initdata sv_ddma_name[] = "S3 Inc. SonicVibes DDMA Controller";
struct sv_state *s;
mm_segment_t fs;
- int i, val;
+ int i, val, ret;
char *ddmaname;
unsigned ddmanamelen;

+ if ((ret=pci_enable_device(pcidev)))
+ return ret;
+
if (!RSRCISIOREGION(pcidev, RESOURCE_SB) ||
!RSRCISIOREGION(pcidev, RESOURCE_ENH) ||
!RSRCISIOREGION(pcidev, RESOURCE_SYNTH) ||
!RSRCISIOREGION(pcidev, RESOURCE_MIDI) ||
!RSRCISIOREGION(pcidev, RESOURCE_GAME))
- return -1;
+ return -ENODEV;
if (pcidev->irq == 0)
- return -1;
+ return -ENODEV;
if (pci_set_dma_mask(pcidev, 0x00ffffff)) {
printk(KERN_WARNING "sonicvibes: architecture does not support 24bit PCI busmaster DMA\n");
- return -1;
+ return -ENODEV;
}
/* try to allocate a DDMA resource if not already available */
if (!RSRCISIOREGION(pcidev, RESOURCE_DDMA)) {
@@ -2534,12 +2540,12 @@
pcidev->resource[RESOURCE_DDMA].name = NULL;
kfree(ddmaname);
printk(KERN_ERR "sv: cannot allocate DDMA controller io ports\n");
- return -1;
+ return -EBUSY;
}
}
if (!(s = kmalloc(sizeof(struct sv_state), GFP_KERNEL))) {
printk(KERN_WARNING "sv: out of memory\n");
- return -1;
+ return -ENOMEM;
}
memset(s, 0, sizeof(struct sv_state));
init_waitqueue_head(&s->dma_adc.wait);
@@ -2567,7 +2573,8 @@

/* hack */
pci_write_config_dword(pcidev, 0x60, wavetable_mem >> 12); /* wavetable base address */
-
+
+ ret = -EBUSY;
if (!request_region(s->ioenh, SV_EXTENT_ENH, "S3 SonicVibes PCM")) {
printk(KERN_ERR "sv: io ports %#lx-%#lx in use\n", s->ioenh, s->ioenh+SV_EXTENT_ENH-1);
goto err_region5;
@@ -2594,8 +2601,6 @@
printk(KERN_ERR "sv: gameport io ports in use\n");
s->gameport.io = s->gameport.size = 0;
}
- if (pci_enable_device(pcidev))
- goto err_irq;
/* initialize codec registers */
outb(0x80, s->ioenh + SV_CODEC_CONTROL); /* assert reset */
udelay(50);
@@ -2619,21 +2624,29 @@
wrindir(s, SV_CIPCMSR1, ((8000 * 65536 / FULLRATE) >> 8) & 0xff);
wrindir(s, SV_CIADCOUTPUT, 0);
/* request irq */
- if (request_irq(s->irq, sv_interrupt, SA_SHIRQ, "S3 SonicVibes", s)) {
+ if ((ret=request_irq(s->irq,sv_interrupt,SA_SHIRQ,"S3 SonicVibes",s))) {
printk(KERN_ERR "sv: irq %u in use\n", s->irq);
goto err_irq;
}
printk(KERN_INFO "sv: found adapter at io %#lx irq %u dmaa %#06x dmac %#06x revision %u\n",
s->ioenh, s->irq, s->iodmaa, s->iodmac, rdindir(s, SV_CIREVISION));
/* register devices */
- if ((s->dev_audio = register_sound_dsp(&sv_audio_fops, -1)) < 0)
+ if ((s->dev_audio = register_sound_dsp(&sv_audio_fops, -1)) < 0) {
+ ret = s->dev_audio;
goto err_dev1;
- if ((s->dev_mixer = register_sound_mixer(&sv_mixer_fops, -1)) < 0)
+ }
+ if ((s->dev_mixer = register_sound_mixer(&sv_mixer_fops, -1)) < 0) {
+ ret = s->dev_mixer;
goto err_dev2;
- if ((s->dev_midi = register_sound_midi(&sv_midi_fops, -1)) < 0)
+ }
+ if ((s->dev_midi = register_sound_midi(&sv_midi_fops, -1)) < 0) {
+ ret = s->dev_midi;
goto err_dev3;
- if ((s->dev_dmfm = register_sound_special(&sv_dmfm_fops, 15 /* ?? */)) < 0)
+ }
+ if ((s->dev_dmfm = register_sound_special(&sv_dmfm_fops, 15 /* ?? */)) < 0) {
+ ret = s->dev_dmfm;
goto err_dev4;
+ }
pci_set_master(pcidev); /* enable bus mastering */
/* initialize the chips */
fs = get_fs();
@@ -2679,7 +2692,7 @@
release_region(s->ioenh, SV_EXTENT_ENH);
err_region5:
kfree(s);
- return -1;
+ return ret;
}

static void __devinit sv_remove(struct pci_dev *dev)
@@ -2731,7 +2744,7 @@
{
if (!pci_present()) /* No PCI bus in this machine! */
return -ENODEV;
- printk(KERN_INFO "sv: version v0.29 time " __TIME__ " " __DATE__ "\n");
+ printk(KERN_INFO "sv: version v0.30 time " __TIME__ " " __DATE__ "\n");
#if 0
if (!(wavetable_mem = __get_free_pages(GFP_KERNEL, 20-PAGE_SHIFT)))
printk(KERN_INFO "sv: cannot allocate 1MB of contiguous nonpageable memory for wavetable data\n");
-
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