linux.git/drivers/pci/setup-cardbus.c, branch master Linux kernel source tree PCI: Move CardBus bridge scanning to setup-cardbus.c 2026-01-27T22:36:53+00:00 Ilpo Järvinen ilpo.jarvinen@linux.intel.com 2025-12-19T17:40:36+00:00 5d413c735175fd3a862cd747b330d0097f74abce The PCI core's pci_scan_bridge_extend() contains convoluted logic specific to setting up bus numbers for legacy CardBus bridges. Extract the CardBus specific part out into setup-cardbus.c to make the core code cleaner and allow omitting CardBus bridge support from modern systems. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20251219174036.16738-24-ilpo.jarvinen@linux.intel.com 
The PCI core's pci_scan_bridge_extend() contains convoluted logic specific
to setting up bus numbers for legacy CardBus bridges. Extract the CardBus
specific part out into setup-cardbus.c to make the core code cleaner and
allow omitting CardBus bridge support from modern systems.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-24-ilpo.jarvinen@linux.intel.com
PCI: Handle CardBus-specific params in setup-cardbus.c 2026-01-27T22:36:52+00:00 Ilpo Järvinen ilpo.jarvinen@linux.intel.com 2025-12-19T17:40:31+00:00 08b3af830a35b66e0d40975dbf02feacc5d2aaa2 Move CardBus window sizing parameters to setup-cardbus.c, which contains all the other CardBus code. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20251219174036.16738-19-ilpo.jarvinen@linux.intel.com 
Move CardBus window sizing parameters to setup-cardbus.c, which contains
all the other CardBus code.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-19-ilpo.jarvinen@linux.intel.com
PCI: Separate CardBus setup & build it only with CONFIG_CARDBUS 2026-01-27T22:36:52+00:00 Ilpo Järvinen ilpo.jarvinen@linux.intel.com 2025-12-19T17:40:30+00:00 fd29d4ea09baa54b87f7ec7278768d0db00382a8 PCI bridge window setup code includes special code to handle CardBus bridges. CardBus has long since fallen out of favor and modern systems have no use for it. Move CardBus setup code to its own file and use existing CONFIG_CARDBUS to decide whether it should be built or not. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20251219174036.16738-18-ilpo.jarvinen@linux.intel.com 
PCI bridge window setup code includes special code to handle CardBus
bridges. CardBus has long since fallen out of favor and modern systems have
no use for it.

Move CardBus setup code to its own file and use existing CONFIG_CARDBUS to
decide whether it should be built or not.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-18-ilpo.jarvinen@linux.intel.com