Re: [PATCH 1/2] Define FIXED_PORT flag for serial_core
- From: Russell King <rmk+lkml@xxxxxxxxxxxxxxxx>
- Date: Wed, 28 Feb 2007 22:26:30 +0000
On Tue, Feb 20, 2007 at 02:19:51PM +1100, David Gibson wrote:
Therefore, this patch defines a UPF_FIXED_PORT flag for the uart_port
structure. If this flag is set when the serial port is configured,
any attempts to alter the port's type, io address, irq or base clock
with setserial are ignored.
I've been wondering about this, and it is questionable whether we
should allow any serial port which isn't owned by the legacy platform
device (the one called "serial8250", iow by the 8250 driver itself)
to have the base addresses and interrupts changed.
IOW, we apply this "fixed port" to any port registered by probe
modules external to the 8250 driver itself, such as PCI, PNP, etc.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
- References:
- Use resource_size_t for serial MMIO addresses
- From: David Gibson
- [PATCH 1/2] Define FIXED_PORT flag for serial_core
- From: David Gibson
- Use resource_size_t for serial MMIO addresses
- Prev by Date: Re: [PATCH] vlan & net drivers: avoid a 4-order allocation
- Next by Date: PID entries in /proc sorted by number, not start time in 2.6.19
- Previous by thread: Re: [PATCH 1/2] Define FIXED_PORT flag for serial_core
- Next by thread: [PATCH 2.6.21-rc1] ibmebus: make root device not of_device-based
- Index(es):
Relevant Pages
|
