# git rev-parse -q --verify c63d2ccaef11f31bdf7cac3b5c4a20b13dcec06d^{commit}
c63d2ccaef11f31bdf7cac3b5c4a20b13dcec06d
already have revision, skipping fetch
# git checkout -q -f -B kisskb c63d2ccaef11f31bdf7cac3b5c4a20b13dcec06d
# git clean -qxdf
# < git log -1
# commit c63d2ccaef11f31bdf7cac3b5c4a20b13dcec06d
# Author: Krishna Kumar <krishnak@linux.ibm.com>
# Date:   Mon Jul 1 13:15:07 2024 +0530
# 
#     powerpc/pci: Hotplug driver bridge support
#     
#     There is an issue with the hotplug operation when it's done on the
#     bridge/switch slot. The bridge-port and devices behind the bridge, which
#     become offline by hot-unplug operation, don't get hot-plugged/enabled
#     by doing hot-plug operation on that slot. Only the first port of the
#     bridge gets enabled and the remaining port/devices remain unplugged. The
#     hot plug/unplug operation is done by the hotplug driver (drivers/pci/
#     hotplug/pnv_php.c).
#     
#     This behavior is due to missing code for the switch/bridge. The existing
#     driver depends on pci_hp_add_devices() function for device enablement.
#     This function calls pci_scan_slot() on only one device-node/port of the
#     bridge, not on all the siblings' device-node/port.
#     
#     The missing code needs to be added which will find all the sibling
#     device-nodes/bridge-ports and will run explicit pci_scan_slot()
#     on those. A new function has been added for this purpose
#     which is invoked from pci_hp_add_devices(). This new function
#     pci_traverse_sibling_nodes_and_scan_slot() gets all the sibling
#     bridge-ports by traversal and explicitly invokes pci_scan_slot() on
#     them.
#     
#     Tested-by: Shawn Anastasio <sanastasio@raptorengineering.com>
#     Signed-off-by: Krishna Kumar <krishnak@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://msgid.link/20240701074513.94873-3-krishnak@linux.ibm.com
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 c63d2ccaef11f31bdf7cac3b5c4a20b13dcec06d
# make -s -j 160 ARCH=arm64 O=/kisskb/build/powerpc-next_defconfig_arm64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  defconfig
# < make -s -j 160 ARCH=arm64 O=/kisskb/build/powerpc-next_defconfig_arm64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 160 ARCH=arm64 O=/kisskb/build/powerpc-next_defconfig_arm64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 160 ARCH=arm64 O=/kisskb/build/powerpc-next_defconfig_arm64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_defconfig_arm64-gcc13
# Build took: 0:05:44.289426