This patch converts the resource management in ISA als100 driver with devres as a clean up. Each manual resource management is converted with the corresponding devres helper. The cleanup code was moved from the remove callback to card->private_free, and then the remove callback became superfluous and dropped.
This should give no user-visible functional changes.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/isa/sc6000.c | 73 +++++++++++++++++----------------------------- 1 file changed, 26 insertions(+), 47 deletions(-)
diff --git a/sound/isa/sc6000.c b/sound/isa/sc6000.c index 3462663050bb..6236c4fa766a 100644 --- a/sound/isa/sc6000.c +++ b/sound/isa/sc6000.c @@ -529,6 +529,14 @@ static int snd_sc6000_match(struct device *devptr, unsigned int dev) return 1; }
+static void snd_sc6000_free(struct snd_card *card) +{ + char __iomem **vport = card->private_data; + + if (*vport) + sc6000_setup_board(*vport, 0); +} + static int snd_sc6000_probe(struct device *devptr, unsigned int dev) { static const int possible_irqs[] = { 5, 7, 9, 10, 11, -1 }; @@ -543,8 +551,8 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev) char __iomem *vmss_port;
- err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE, - sizeof(vport), &card); + err = snd_devm_card_new(devptr, index[dev], id[dev], THIS_MODULE, + sizeof(vport), &card); if (err < 0) return err;
@@ -553,8 +561,7 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev) xirq = snd_legacy_find_free_irq(possible_irqs); if (xirq < 0) { snd_printk(KERN_ERR PFX "unable to find a free IRQ\n"); - err = -EBUSY; - goto err_exit; + return -EBUSY; } }
@@ -562,38 +569,33 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev) xdma = snd_legacy_find_free_dma(possible_dmas); if (xdma < 0) { snd_printk(KERN_ERR PFX "unable to find a free DMA\n"); - err = -EBUSY; - goto err_exit; + return -EBUSY; } }
- if (!request_region(port[dev], 0x10, DRV_NAME)) { + if (!devm_request_region(devptr, port[dev], 0x10, DRV_NAME)) { snd_printk(KERN_ERR PFX "I/O port region is already in use.\n"); - err = -EBUSY; - goto err_exit; + return -EBUSY; } *vport = devm_ioport_map(devptr, port[dev], 0x10); if (*vport == NULL) { snd_printk(KERN_ERR PFX "I/O port cannot be iomapped.\n"); - err = -EBUSY; - goto err_unmap1; + return -EBUSY; }
/* to make it marked as used */ - if (!request_region(mss_port[dev], 4, DRV_NAME)) { + if (!devm_request_region(devptr, mss_port[dev], 4, DRV_NAME)) { snd_printk(KERN_ERR PFX "SC-6000 port I/O port region is already in use.\n"); - err = -EBUSY; - goto err_unmap1; + return -EBUSY; } vmss_port = devm_ioport_map(devptr, mss_port[dev], 4); if (!vmss_port) { snd_printk(KERN_ERR PFX "MSS port I/O cannot be iomapped.\n"); - err = -EBUSY; - goto err_unmap2; + return -EBUSY; }
snd_printd("Initializing BASE[0x%lx] IRQ[%d] DMA[%d] MIRQ[%d]\n", @@ -602,28 +604,29 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev)
err = sc6000_init_board(*vport, vmss_port, dev); if (err < 0) - goto err_unmap2; + return err; + card->private_free = snd_sc6000_free;
err = snd_wss_create(card, mss_port[dev] + 4, -1, xirq, xdma, -1, WSS_HW_DETECT, 0, &chip); if (err < 0) - goto err_unmap2; + return err;
err = snd_wss_pcm(chip, 0); if (err < 0) { snd_printk(KERN_ERR PFX "error creating new WSS PCM device\n"); - goto err_unmap2; + return err; } err = snd_wss_mixer(chip); if (err < 0) { snd_printk(KERN_ERR PFX "error creating new WSS mixer\n"); - goto err_unmap2; + return err; } err = snd_sc6000_mixer(chip); if (err < 0) { snd_printk(KERN_ERR PFX "the mixer rewrite failed\n"); - goto err_unmap2; + return err; } if (snd_opl3_create(card, 0x388, 0x388 + 2, @@ -633,7 +636,7 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev) } else { err = snd_opl3_hwdep_new(opl3, 0, 1, NULL); if (err < 0) - goto err_unmap2; + return err; }
if (mpu_port[dev] != SNDRV_AUTO_PORT) { @@ -654,39 +657,15 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev)
err = snd_card_register(card); if (err < 0) - goto err_unmap2; + return err;
dev_set_drvdata(devptr, card); return 0; - -err_unmap2: - sc6000_setup_board(*vport, 0); - release_region(mss_port[dev], 4); -err_unmap1: - release_region(port[dev], 0x10); -err_exit: - snd_card_free(card); - return err; -} - -static void snd_sc6000_remove(struct device *devptr, unsigned int dev) -{ - struct snd_card *card = dev_get_drvdata(devptr); - char __iomem **vport = card->private_data; - - if (sc6000_setup_board(*vport, 0) < 0) - snd_printk(KERN_WARNING "sc6000_setup_board failed on exit!\n"); - - release_region(port[dev], 0x10); - release_region(mss_port[dev], 4); - - snd_card_free(card); }
static struct isa_driver snd_sc6000_driver = { .match = snd_sc6000_match, .probe = snd_sc6000_probe, - .remove = snd_sc6000_remove, /* FIXME: suspend/resume */ .driver = { .name = DRV_NAME,