Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.11 2024-11-16T16:09:30+00:00 2024-11-16T16:09:30+00:00 Ilpo Järvinen ilpo.jarvinen@linux.intel.com 2024-10-18T14:47:54+00:00 urn:sha1:d278b098282d1327f6e1be82aacb18457a4d244d Add a thermal cooling driver to provide path to access PCIe bandwidth controller using the usual thermal interfaces. A cooling device is instantiated for controllable PCIe Ports from the bwctrl service driver. If registering the cooling device fails, allow bwctrl's probe to succeed regardless. As cdev in that case contains IS_ERR() pseudo "pointer", clean that up inside the probe function so the remove side doesn't need to suddenly make an odd looking IS_ERR() check. The thermal side state 0 means no throttling, i.e., maximum supported PCIe Link Speed. Link: https://lore.kernel.org/r/20241018144755.7875-9-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> [bhelgaas: dropped data->cdev test per https://lore.kernel.org/r/ZzRm1SJTwEMRsAr8@wunner.de] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> # From the cooling device interface perspective