From: Alan Cox <alan@redhat.com>
Date: Sun, 1 Oct 2006 06:28:03 +0000 (-0700)
Subject: [PATCH] trident: fix pci_dev reference counting and buglet
X-Git-Tag: firefly_0821_release~32954
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1cfee2b3c21d71a8c20884dbb77ed343558db87f;p=firefly-linux-kernel-4.4.55.git
[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 <alan@redhat.com>
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
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");