6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen Yu yu.c.chen@intel.com
commit 8151320c747efb22d30b035af989fed0d502176e upstream.
The security-version-number check should be used rather than the runtime version check for driver updates.
Otherwise, the firmware update would fail when the update binary had a lower runtime version number than the current one.
Fixes: 0db89fa243e5 ("ACPI: Introduce Platform Firmware Runtime Update device driver") Cc: 5.17+ stable@vger.kernel.org # 5.17+ Reported-by: "Govindarajulu, Hariganesh" hariganesh.govindarajulu@intel.com Signed-off-by: Chen Yu yu.c.chen@intel.com Link: https://patch.msgid.link/20250722143233.3970607-1-yu.c.chen@intel.com [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/acpi/pfr_update.c | 2 +- include/uapi/linux/pfrut.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/acpi/pfr_update.c +++ b/drivers/acpi/pfr_update.c @@ -310,7 +310,7 @@ static bool applicable_image(const void if (type == PFRU_CODE_INJECT_TYPE) return payload_hdr->rt_ver >= cap->code_rt_version;
- return payload_hdr->rt_ver >= cap->drv_rt_version; + return payload_hdr->svn_ver >= cap->drv_svn; }
static void print_update_debug_info(struct pfru_updated_result *result, --- a/include/uapi/linux/pfrut.h +++ b/include/uapi/linux/pfrut.h @@ -89,6 +89,7 @@ struct pfru_payload_hdr { __u32 hw_ver; __u32 rt_ver; __u8 platform_id[16]; + __u32 svn_ver; };
enum pfru_dsm_status {