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2023-03-23driver core: bus: mark the struct bus_type for sysfs callbacks as constantGreg Kroah-Hartman1-1/+1
struct bus_type should never be modified in a sysfs callback as there is nothing in the structure to modify, and frankly, the structure is almost never used in a sysfs callback, so mark it as constant to allow struct bus_type to be moved to read-only memory. Cc: "David S. Miller" <davem@davemloft.net> Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexandre Bounine <alex.bou9@gmail.com> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Ben Widawsky <bwidawsk@kernel.org> Cc: Dexuan Cui <decui@microsoft.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Harald Freudenberger <freude@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Hu Haowen <src.res@email.cn> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Stuart Yoder <stuyoder@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Yanteng Si <siyanteng@loongson.cn> Acked-by: Ilya Dryomov <idryomov@gmail.com> # rbd Acked-by: Ira Weiny <ira.weiny@intel.com> # cxl Reviewed-by: Alex Shi <alexs@kernel.org> Acked-by: Iwona Winiarska <iwona.winiarska@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # pci Acked-by: Wei Liu <wei.liu@kernel.org> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> # scsi Link: https://lore.kernel.org/r/20230313182918.1312597-23-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-09peci: Add sysfs interface for PECI busIwona Winiarska1-0/+82
PECI devices may not be discoverable at the time when PECI controller is being added (e.g. BMC can boot up when the Host system is still in S5). Since we currently don't have the capabilities to figure out the Host system state inside the PECI subsystem itself, we have to rely on userspace to do it for us. In the future, PECI subsystem may be expanded with mechanisms that allow us to avoid depending on userspace interaction (e.g. CPU presence could be detected using GPIO, and the information on whether it's discoverable could be obtained over IPMI). Unfortunately, those methods may ultimately not be available (support will vary from platform to platform), which means that we still need platform independent method triggered by userspace. Acked-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com> Link: https://lore.kernel.org/r/20220208153639.255278-8-iwona.winiarska@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>