From 1cfee2b3c21d71a8c20884dbb77ed343558db87f Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 30 Sep 2006 23:28:03 -0700 Subject: [PATCH] trident: fix pci_dev reference counting and buglet Switch trident to use pci_get/put_dev properly. Also fix a bug where the driver erroneously passed pdev not NULL to a second search. This happened to always work except with pci=reverse because of chip ordering. Signed-off-by: Alan Cox Signed-off-by: Muli Ben-Yehuda Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- sound/oss/trident.c | 44 +++++++++++++++++++++++++++++--------------- 1 file changed, 29 insertions(+), 15 deletions(-) (limited to 'sound/oss/trident.c') diff --git a/sound/oss/trident.c b/sound/oss/trident.c index d4844de0c3b7..ce79cd82478a 100644 --- a/sound/oss/trident.c +++ b/sound/oss/trident.c @@ -3269,8 +3269,8 @@ ali_setup_spdif_out(struct trident_card *card, int flag) char temp; struct pci_dev *pci_dev = NULL; - pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, - pci_dev); + pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, + pci_dev); if (pci_dev == NULL) return; pci_read_config_byte(pci_dev, 0x61, &temp); @@ -3284,6 +3284,8 @@ ali_setup_spdif_out(struct trident_card *card, int flag) temp |= 0x10; pci_write_config_byte(pci_dev, 0x7e, temp); + pci_dev_put(pci_dev); + ch = inb(TRID_REG(card, ALI_SCTRL)); outb(ch | ALI_SPDIF_OUT_ENABLE, TRID_REG(card, ALI_SCTRL)); ch = inb(TRID_REG(card, ALI_SPDIF_CTRL)); @@ -3490,16 +3492,19 @@ ali_close_multi_channels(void) char temp = 0; struct pci_dev *pci_dev = NULL; - pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, - pci_dev); + pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, + pci_dev); if (pci_dev == NULL) return -1; + pci_read_config_byte(pci_dev, 0x59, &temp); temp &= ~0x80; pci_write_config_byte(pci_dev, 0x59, temp); - pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, - pci_dev); + pci_dev_put(pci_dev); + + pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, + NULL); if (pci_dev == NULL) return -1; @@ -3507,6 +3512,8 @@ ali_close_multi_channels(void) temp &= ~0x20; pci_write_config_byte(pci_dev, 0xB8, temp); + pci_dev_put(pci_dev); + return 0; } @@ -3517,21 +3524,26 @@ ali_setup_multi_channels(struct trident_card *card, int chan_nums) char temp = 0; struct pci_dev *pci_dev = NULL; - pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, - pci_dev); + pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, + pci_dev); if (pci_dev == NULL) return -1; pci_read_config_byte(pci_dev, 0x59, &temp); temp |= 0x80; pci_write_config_byte(pci_dev, 0x59, temp); - pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, - pci_dev); + pci_dev_put(pci_dev); + + pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, + NULL); if (pci_dev == NULL) return -1; pci_read_config_byte(pci_dev, (int) 0xB8, &temp); temp |= 0x20; pci_write_config_byte(pci_dev, (int) 0xB8, (u8) temp); + + pci_dev_put(pci_dev); + if (chan_nums == 6) { dwValue = inl(TRID_REG(card, ALI_SCTRL)) | 0x000f0000; outl(dwValue, TRID_REG(card, ALI_SCTRL)); @@ -4103,8 +4115,8 @@ ali_reset_5451(struct trident_card *card) unsigned int dwVal; unsigned short wCount, wReg; - pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, - pci_dev); + pci_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, + pci_dev); if (pci_dev == NULL) return -1; @@ -4114,6 +4126,7 @@ ali_reset_5451(struct trident_card *card) pci_read_config_dword(pci_dev, 0x7c, &dwVal); pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff); udelay(5000); + pci_dev_put(pci_dev); pci_dev = card->pci_dev; if (pci_dev == NULL) @@ -4393,7 +4406,7 @@ trident_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id) init_timer(&card->timer); card->iobase = iobase; - card->pci_dev = pci_dev; + card->pci_dev = pci_dev_get(pci_dev); card->pci_id = pci_id->device; card->revision = revision; card->irq = pci_dev->irq; @@ -4547,6 +4560,7 @@ out_unregister_sound_dsp: out_free_irq: free_irq(card->irq, card); out_proc_fs: + pci_dev_put(card->pci_dev); if (res) { remove_proc_entry("ALi5451", NULL); res = NULL; @@ -4597,9 +4611,9 @@ trident_remove(struct pci_dev *pci_dev) } unregister_sound_dsp(card->dev_audio); - kfree(card); - pci_set_drvdata(pci_dev, NULL); + pci_dev_put(card->pci_dev); + kfree(card); } MODULE_AUTHOR("Alan Cox, Aaron Holtzman, Ollie Lho, Ching Ling Lee, Muli Ben-Yehuda"); -- cgit v1.2.3