diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2006-07-03 09:24:12 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-04 00:26:58 +0200 |
| commit | cb6358eb69d9854f65f2979c0ce9280eee041828 (patch) | |
| tree | 383765c090a291af222b08ae4044441d40a5d338 /drivers/serial | |
| parent | [PATCH] PNPACPI: support shareable interrupts (diff) | |
| download | linux-cb6358eb69d9854f65f2979c0ce9280eee041828.tar.xz linux-cb6358eb69d9854f65f2979c0ce9280eee041828.zip | |
[PATCH] SERIAL: allow shared 8250_pnp interrupts
PNP devices can use shared interrupts, so check to see whether we'll need
SA_SHIRQ for request_irq().
The builtin PDH UART on the HP rx8640 is an example of an ACPI/PNP device
that uses a shareable level-triggered, active-low interrupt. The interrupt
can be shared in very large I/O configurations or by artificially lowering
IA64_DEF_LAST_DEVICE_VECTOR.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Li Shaohua <shaohua.li@intel.com>
Cc: Len Brown <len.brown@intel.com>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/8250_pnp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/serial/8250_pnp.c b/drivers/serial/8250_pnp.c index 739bc84f91e9..632f62d6ec7e 100644 --- a/drivers/serial/8250_pnp.c +++ b/drivers/serial/8250_pnp.c @@ -431,6 +431,8 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) #endif port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; + if (pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE) + port.flags |= UPF_SHARE_IRQ; port.uartclk = 1843200; port.dev = &dev->dev; |