On 2020-03-16 14:11, David Mathog wrote:
Things I do not understand:
4. lspci -k:
00:0a.0 PCI bridge: Broadcom HT2100 PCI-Express Bridge (rev a2)
Kernel driver in use: pcieport
Kernel modules: shpchp
but...
grep -i pcieport /lib/modules/*/modules.builtin
#nothing
grep -i pcieport /lib/modules/*/modules.alias
#nothing
Yet there are reciprocal links here:
ls -al /sys/bus/pci/drivers/pcieport/0000:00:0a.0
lrwxrwxrwx 1 root root 0 Mar 16 14:25
/sys/bus/pci/drivers/pcieport/0000:00:0a.0 ->
../../../../devices/pci0000:00/0000:00:0a.0
ls -al /sys/devices/pci0000:00/0000:00:0a.0/driver
lrwxrwxrwx 1 root root 0 Mar 16 15:03
/sys/devices/pci0000:00/0000:00:0a.0/driver ->
../../../bus/pci/drivers/pcieport
Not builtin, not a module, yet still a driver! Where did it come from?
Thanks,
David Mathog
mathog@xxxxxxxxxxx
Manager, Sequence Analysis Facility, Biology Division, Caltech
