From cb6358eb69d9854f65f2979c0ce9280eee041828 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas <bjorn.helgaas@hp.com> Date: Mon, 3 Jul 2006 00:24:12 -0700 Subject: [PATCH] [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> --- drivers/serial/8250_pnp.c | 2 ++ 1 file changed, 2 insertions(+) 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; -- GitLab