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OpenCloudOS-Kernel
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pcmcia: properly lock skt->irq, skt->irq_mask 

Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski 2010-01-16 01:14:38 +01:00
parent 9e86749cff
commit 64d8d46f5f
2 changed files with 5 additions and 0 deletions
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3
drivers/pcmcia/pcmcia_resource.c
View File

@ -419,7 +419,9 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
return -EINVAL;
}
mutex_lock(&s->ops_mutex);
if (s->irq.AssignedIRQ != req->AssignedIRQ) {
mutex_unlock(&s->ops_mutex);
dev_dbg(&s->dev, "IRQ must match assigned one\n");
return -EINVAL;
}
@ -434,6 +436,7 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
#ifdef CONFIG_PCMCIA_PROBE
pcmcia_used_irq[req->AssignedIRQ]--;
#endif
mutex_unlock(&s->ops_mutex);
return 0;
} /* pcmcia_release_irq */

2
drivers/pcmcia/socket_sysfs.c
View File

@ -167,7 +167,9 @@ static ssize_t pccard_store_irq_mask(struct device *dev,
ret = sscanf(buf, "0x%x\n", &mask);
if (ret == 1) {
mutex_lock(&s->ops_mutex);
s->irq_mask &= mask;
mutex_unlock(&s->ops_mutex);
ret = 0;
}