A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

serial: only use PNP IRQ if it's valid

Browse source 
"Luming Yu" <[email protected]> says:

  There is a "ttyS1 irq is -1" problem observed on tiger4 which cause the
  serial port broken.

  It is because that there is __no__ ACPI IRQ resource assigned for the
  serial port.  So the value of the IRQ for the port is never changed since it
  got initialized to -1.

If PNP supplies a valid IRQ, use it.  Otherwise, leave port.irq == 0, which
means "no IRQ" to the serial core.

Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: Yu Luming <[email protected]>
Acked-by: Matthew Wilcox <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: Russell King <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Bjorn Helgaas 2007-11-14 16:59:59 -08:00 • committed by Linus Torvalds
commit e02f5f52ca
1 changed files with 2 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/serial/8250_pnp.c
View file

@ -439,7 +439,8 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
}
memset(&port, 0, sizeof(struct uart_port));
port.irq = pnp_irq(dev, 0);
if (pnp_irq_valid(dev, 0))
port.irq = pnp_irq(dev, 0);
if (pnp_port_valid(dev, 0)) {
port.iobase = pnp_port_start(dev, 0);
port.iotype = UPIO_PORT;