On 05/20/14 10:27, Johannes Berg wrote:
On Tue, 2014-05-20 at 03:49 -0400, Robert P. J. Day wrote:
quite possibly a silly question (which has never stopped me before),
but in perusing the PCIE code in the kernel source, i was looking for
sample code to demo in a classroom setting and picked on
drivers/net/wireless/iwlwifi/pcie, which i was *assuming* was
PCIE-dependent -- specifically, i was going to demo the Advanced-N
6235 PCIE wifi card on an intel galileo board.
but i thought it was a bit strange that the pcie/ subdirectory there
doesn't seem to depend on PCIEPORTBUS. as a test, i deselected
PCIEPORTBUS in a configuration and did a rebuild, and the source in
the pcie/ directory was recompiled.
am i misunderstanding the function of the kernel config variable
PCIEPORTBUS? i notice that .../iwlwifi/Makefile includes the line:
iwlwifi-objs += pcie/drv.o pcie/rx.o pcie/tx.o pcie/trans.o
which simply compiles those files with no regard to dependency. can
someone clarify this? thanks.
The whole driver depends on CONFIG_PCI, maybe it should depend on
something more PCIe specific, but that wasn't easy to sort out, and the
APIs it needs aren't PCIe specific afaict.
Correct. A number of PCIe specific calls are under CONFIG_PCI, ie.
pcie_capability_*() et al.
Regards,
Arend
johannes
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
