Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: [PATCH 2/2] rt2x00: Implement support for rt2800pci | Date | Sat, 17 Oct 2009 16:54:03 +0200 |
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[ I somehow missed this one by not being on cc: ]
On Thursday 15 October 2009 22:04:14 Ivo van Doorn wrote: > Add support for the rt2860/rt3090 chipsets from Ralink. > > Includes various patches from a lot of people who helped > getting this driver into the current shape. > > Signed-off-by: Alban Browaeys <prahal@yahoo.com> > Signed-off-by: Benoit PAPILLAULT <benoit.papillault@free.fr> > Signed-off-by: Felix Fietkau <nbd@openwrt.org> > Signed-off-by: Luis Correia <luis.f.correia@gmail.com> > Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> > Signed-off-by: Mark Asselstine <asselsm@gmail.com> > Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com> > Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> > --- > http://kernel.org/pub/linux/kernel/people/ivd/patches/0003-rt2x00-Implement-support-for-rt2800pci.patch
First let me say that I'm very happy to see this patch finally being submitted and I appreciate the effort..
(I'll give it a spin on Eee 901 w/ 2.6.32-rc5 sometime later..)
Now to the less happy part..
I also used the opportunity to take a closer look at this driver and it seems that it needlessly adds around 2 KLOC to kernel by duplicating the common content of rt2800usb.h to rt2800pci.h instead of moving it to the shared header (like it is done in the staging crap drivers):
$ wc -l drivers/net/wireless/rt2x00/rt2800usb.h drivers/net/wireless/rt2x00/rt2800pci.h 1951 drivers/net/wireless/rt2x00/rt2800usb.h 1960 drivers/net/wireless/rt2x00/rt2800pci.h 3911 total
$ diff -u drivers/net/wireless/rt2x00/rt2800usb.h drivers/net/wireless/rt2x00/rt2800pci.h|diffstat rt2800pci.h | 213 +++++++++++++++++++++++++++++++----------------------------- 1 file changed, 111 insertions(+), 102 deletions(-)
Similarly it looks like most of the code between rt2800usb.c and rt2800pci.c could also be shared (up to another 2 KLOC saved) by adding abstraction layer for accessing chipset registers over different buses (again like it is done in staging crap drivers):
$ wc -l drivers/net/wireless/rt2x00/rt2800usb.c drivers/net/wireless/rt2x00/rt2800pci.c 3077 drivers/net/wireless/rt2x00/rt2800usb.c 3323 drivers/net/wireless/rt2x00/rt2800pci.c 6400 total
$ diff -u drivers/net/wireless/rt2x00/rt2800usb.c drivers/net/wireless/rt2x00/rt2800pci.c|diffstat rt2800pci.c | 2190 +++++++++++++++++++++++++++++++++--------------------------- 1 file changed, 1218 insertions(+), 972 deletions(-)
[ for better visualization of issues raised diffs themselves are available at: http://kernel.org/pub/linux/kernel/people/bart/rt2800/ ]
All in all, the total amount of the kernel code needed for implementing rt2800pci functionality should 1-2 KLOC instead of the current 5 KLOC.
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