[PATCH] bcm43xx: add a note that not all devices support PIO.
Signed-off-by: Michael Buesch <mbuesch@freenet.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
parent
77db31ea43
commit
8bcab3f559
|
@ -52,6 +52,11 @@ config BCM43XX_PIO_MODE
|
|||
Only include Programmed I/O (PIO).
|
||||
This reduces the size of the driver module, by omitting the DMA code.
|
||||
Please note that PIO transfers are slow (compared to DMA).
|
||||
|
||||
Also note that not all devices of the 43xx series support PIO.
|
||||
The 4306 (Apple Airport Extreme and others) supports PIO, while
|
||||
the 4318 is known to _not_ support PIO.
|
||||
|
||||
Only use PIO, if DMA does not work for you.
|
||||
|
||||
endchoice
|
||||
|
|
Loading…
Reference in a new issue