[openwrt/openwrt] x86: improve sysinfo handling of dummy values

[LEDE Commits]

chunkeey pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/abc2821286e4d9ccc98146a5bc3cf3f8e1ff4b9f

commit abc2821286e4d9ccc98146a5bc3cf3f8e1ff4b9f
Author: Stefan Lippers-Hollmann <s.l-h at gmx.de>
AuthorDate: Thu Dec 30 03:52:07 2021 +0100

    x86: improve sysinfo handling of dummy values
    
    Fall back to using board_vendor and board_name, if known dummy values
    are used for sys_vendor and product_name.
    
    Examples:
            To be filled by O.E.M.:To be filled by O.E.M.
    -->     INTEL Corporation:ChiefRiver
    
            System manufacturer:System Product Name
    -->     ASUSTeK COMPUTER INC.:P8H77-M PRO
    
            To Be Filled By O.E.M.:To Be Filled By O.E.M.
    -->     ASRock:Q1900DC-ITX
    
            Gigabyte Technology Co., Ltd.:To be filled by O.E.M.
    -->     Gigabyte Technology Co., Ltd.:H77M-D3H
    
            empty:empty
    -->     TYAN Computer Corporation:TYAN Toledo i3210W/i3200R S5211
    
            To Be Filled By O.E.M.:To Be Filled By O.E.M.
    -->     ASRock:H77 Pro4-M
    
    Signed-off-by: Stefan Lippers-Hollmann <s.l-h at gmx.de>
---
 target/linux/x86/base-files/lib/preinit/01_sysinfo | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/target/linux/x86/base-files/lib/preinit/01_sysinfo b/target/linux/x86/base-files/lib/preinit/01_sysinfo
index 498b076998..97e8e003f3 100644
--- a/target/linux/x86/base-files/lib/preinit/01_sysinfo
+++ b/target/linux/x86/base-files/lib/preinit/01_sysinfo
@@ -12,12 +12,24 @@ do_sysinfo_x86() {
 
 	for file in sys_vendor board_vendor; do
 		vendor="$(cat /sys/devices/virtual/dmi/id/$file 2>/dev/null)"
+		case "$vendor" in
+		empty | \
+		System\ manufacturer | \
+		To\ [bB]e\ [fF]illed\ [bB]y\ O\.E\.M\.)
+			continue
+			;;
+		esac
 		[ -n "$vendor" ] && break
 	done
 
 	for file in product_name board_name; do
 		product="$(cat /sys/devices/virtual/dmi/id/$file 2>/dev/null)"
 		case "$vendor:$product" in
+		?*:empty | \
+		?*:System\ Product\ Name | \
+		?*:To\ [bB]e\ [fF]illed\ [bB]y\ O\.E\.M\.)
+			continue
+			;;
 		"PC Engines:APU")
 			product="apu1"
 			break