6e17e31fa9
MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/4285 JIRA: https://issues.redhat.com/browse/RHEL-31058 Build Info: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=61367271 Tested: Did sanity boot testing Intel (intel-arrowlake-s-02) system. commit aec7d25b497ce4a8d044e9496de0aa433f7f8f06 Author: Hans de Goede <hdegoede@redhat.com> Date: Mon Mar 4 14:43:55 2024 +0100 platform/x86: p2sb: On Goldmont only cache P2SB and SPI devfn BAR On Goldmont p2sb_bar() only ever gets called for 2 devices, the actual P2SB devfn 13,0 and the SPI controller which is part of the P2SB, devfn 13,2. But the current p2sb code tries to cache BAR0 info for all of devfn 13,0 to 13,7 . This involves calling pci_scan_single_device() for device 13 functions 0-7 and the hw does not seem to like pci_scan_single_device() getting called for some of the other hidden devices. E.g. on an ASUS VivoBook D540NV-GQ065T this leads to continuous ACPI errors leading to high CPU usage. Fix this by only caching BAR0 info and thus only calling pci_scan_single_device() for the P2SB and the SPI controller. Fixes: 5913320eb0b3 ("platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe") Reported-by: Danil Rybakov <danilrybakov249@gmail.com> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218531 Tested-by: Danil Rybakov <danilrybakov249@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20240304134356.305375-2-hdegoede@redhat.com Signed-off-by: Steve Best <sbest@redhat.com> Approved-by: Tony Camuso <tcamuso@redhat.com> Approved-by: Desnes Nunes <desnesn@redhat.com> Approved-by: David Arcari <darcari@redhat.com> Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com> Merged-by: Lucas Zampieri <lzampier@redhat.com> |
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