diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-06-16 14:35:15 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2008-06-24 15:33:41 +0200 |
| commit | 635416ef393e8cec5a89fc6c1de710ee9596a51e (patch) | |
| tree | 2a59604e72fb7432fc462f090e5efe51fbddddff /drivers/pcmcia | |
| parent | 05f43d48ddbda0ce74941aff4711a1829116cc4f (diff) | |
| download | op-kernel-dev-635416ef393e8cec5a89fc6c1de710ee9596a51e.zip op-kernel-dev-635416ef393e8cec5a89fc6c1de710ee9596a51e.tar.gz | |
pcmcia: irq probe can be done without risking an IRQ storm
Nowdays you can ask for an IRQ to be allocated but not enabled, when PCMCIA
was written this was not true and this feature is thus not used
[linux@dominikbrodowski.net: add comment and ifdef to avoid compilation
breakage at least on alpha]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia')
| -rw-r--r-- | drivers/pcmcia/pcmcia_resource.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c index c8f77b8..78af594 100644 --- a/drivers/pcmcia/pcmcia_resource.c +++ b/drivers/pcmcia/pcmcia_resource.c @@ -812,6 +812,15 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) type = IRQF_SHARED; #ifdef CONFIG_PCMCIA_PROBE + +#ifdef IRQ_NOAUTOEN + /* if the underlying IRQ infrastructure allows for it, only allocate + * the IRQ, but do not enable it + */ + if (!(req->Attributes & IRQ_HANDLE_PRESENT)) + type |= IRQ_NOAUTOEN; +#endif /* IRQ_NOAUTOEN */ + if (s->irq.AssignedIRQ != 0) { /* If the interrupt is already assigned, it must be the same */ irq = s->irq.AssignedIRQ; |
