From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 3 Apr 2024 20:45:11 +0000 (+0900)
Subject: backlight: fix detection of multiple graphic cards
X-Git-Tag: v256-rc1~302
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9990552f9a26cfb07ef3edaad846543bdd013b10;p=thirdparty%2Fsystemd.git

backlight: fix detection of multiple graphic cards

Follow-up for e0504dd011189d97a1ea813aabfe1e696742bcf5.

Hopefully, devices in PCI subsystem have some properties, thus have
their udev database file. But, that may not be true. Here, we only read
sysattrs of enumerated devices, hence it is not necessary to check if
the device is initialized or not.
---

diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c
index 61264059941..2de6c2008af 100644
--- a/src/backlight/backlight.c
+++ b/src/backlight/backlight.c
@@ -55,6 +55,10 @@ static int has_multiple_graphics_cards(void) {
         if (r < 0)
                 return r;
 
+        r = sd_device_enumerator_allow_uninitialized(e);
+        if (r < 0)
+                return r;
+
         r = sd_device_enumerator_add_match_subsystem(e, "pci", /* match = */ true);
         if (r < 0)
                 return r;