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authorTakashi Iwai <tiwai@suse.de>2009-05-26 13:55:42 +0200
committerTakashi Iwai <tiwai@suse.de>2009-05-26 13:55:42 +0200
commitdb1005ec6ff8f250bccbc87387a955078891bfe4 (patch)
tree43388819d1477db084eaa7901b74461494b61fa6 /sound/pci
parenta693a26fe0807c3c406d6b5295d222b646677288 (diff)
downloadop-kernel-dev-db1005ec6ff8f250bccbc87387a955078891bfe4.zip
op-kernel-dev-db1005ec6ff8f250bccbc87387a955078891bfe4.tar.gz
ALSA: riptide - Fix joystick resource handling
The current code doesn't handle the multiple gameports properly, and uses unnecessary global static variables to store the data. This patch changes the probe / remove routines to use the driver data assigned to the dedicated pci device, and adds the support of multiple devices. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/riptide/riptide.c61
1 files changed, 26 insertions, 35 deletions
diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c
index 460be03..235a71e 100644
--- a/sound/pci/riptide/riptide.c
+++ b/sound/pci/riptide/riptide.c
@@ -2014,14 +2014,12 @@ static int __devinit snd_riptide_mixer(struct snd_riptide *chip)
}
#ifdef SUPPORT_JOYSTICK
-static int have_joystick;
-static struct pci_dev *riptide_gameport_pci;
-static struct gameport *riptide_gameport;
static int __devinit
snd_riptide_joystick_probe(struct pci_dev *pci, const struct pci_device_id *id)
{
static int dev;
+ struct gameport *gameport;
if (dev >= SNDRV_CARDS)
return -ENODEV;
@@ -2030,36 +2028,33 @@ snd_riptide_joystick_probe(struct pci_dev *pci, const struct pci_device_id *id)
return -ENOENT;
}
- if (joystick_port[dev]) {
- riptide_gameport = gameport_allocate_port();
- if (riptide_gameport) {
- if (!request_region
- (joystick_port[dev], 8, "Riptide gameport")) {
- snd_printk(KERN_WARNING
- "Riptide: cannot grab gameport 0x%x\n",
- joystick_port[dev]);
- gameport_free_port(riptide_gameport);
- riptide_gameport = NULL;
- } else {
- riptide_gameport_pci = pci;
- riptide_gameport->io = joystick_port[dev];
- gameport_register_port(riptide_gameport);
- }
- }
+ if (!joystick_port[dev++])
+ return 0;
+
+ gameport = gameport_allocate_port();
+ if (!gameport)
+ return -ENOMEM;
+ if (!request_region(joystick_port[dev], 8, "Riptide gameport")) {
+ snd_printk(KERN_WARNING
+ "Riptide: cannot grab gameport 0x%x\n",
+ joystick_port[dev]);
+ gameport_free_port(gameport);
+ return -EBUSY;
}
- dev++;
+
+ gameport->io = joystick_port[dev];
+ gameport_register_port(gameport);
+ pci_set_drvdata(pci, gameport);
return 0;
}
static void __devexit snd_riptide_joystick_remove(struct pci_dev *pci)
{
- if (riptide_gameport) {
- if (riptide_gameport_pci == pci) {
- release_region(riptide_gameport->io, 8);
- riptide_gameport_pci = NULL;
- gameport_unregister_port(riptide_gameport);
- riptide_gameport = NULL;
- }
+ struct gameport *gameport = pci_get_drvdata(pci);
+ if (gameport) {
+ release_region(gameport->io, 8);
+ gameport_unregister_port(gameport);
+ pci_set_drvdata(pci, NULL);
}
}
#endif
@@ -2198,14 +2193,11 @@ static struct pci_driver joystick_driver = {
static int __init alsa_card_riptide_init(void)
{
int err;
- if ((err = pci_register_driver(&driver)) < 0)
+ err = pci_register_driver(&driver);
+ if (err < 0)
return err;
#if defined(SUPPORT_JOYSTICK)
- if (pci_register_driver(&joystick_driver) < 0) {
- have_joystick = 0;
- snd_printk(KERN_INFO "no joystick found\n");
- } else
- have_joystick = 1;
+ pci_register_driver(&joystick_driver);
#endif
return 0;
}
@@ -2214,8 +2206,7 @@ static void __exit alsa_card_riptide_exit(void)
{
pci_unregister_driver(&driver);
#if defined(SUPPORT_JOYSTICK)
- if (have_joystick)
- pci_unregister_driver(&joystick_driver);
+ pci_unregister_driver(&joystick_driver);
#endif
}
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