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ACPI: pfr_update: Fix the driver update version check

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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: 0db89fa243 ("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>
This commit is contained in:
Chen Yu
2025-07-22 22:32:33 +08:00
committed by Greg Kroah-Hartman
parent 3ddd55cf19
commit cf0a88124e
2 changed files with 2 additions and 1 deletions
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2
drivers/acpi/pfr_update.c
View File

@@ -310,7 +310,7 @@ static bool applicable_image(const void *data, struct pfru_update_cap_info *cap,
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,

1
include/uapi/linux/pfrut.h
View File

@@ -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 {