xd86drm: read more than 128 bytes of uevent in drmParsePciBusInfo

Some platforms (such as Macs using OF) can have more information in the
uevent file thus reading only the first 128 might not be sufficient.

Bump it to 512, which "should be enough for everybody" ;-)

v2: Use sizeof(data)-1 over hardcoded number (Eric).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98629
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reported-by: Mingcong Bai <jeffbai@aosc.xyz>
Tested-by: Mingcong Bai <jeffbai@aosc.xyz> (v1)
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/xf86drm.c b/xf86drm.c
index 52add5e4..9b97bbb6 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -2864,7 +2864,7 @@ static int drmParsePciBusInfo(int maj, int min, drmPciBusInfoPtr info)
 {
 #ifdef __linux__
     char path[PATH_MAX + 1];
-    char data[128 + 1];
+    char data[512 + 1];
     char *str;
     int domain, bus, dev, func;
     int fd, ret;
@@ -2875,7 +2875,7 @@ static int drmParsePciBusInfo(int maj, int min, drmPciBusInfoPtr info)
         return -errno;
 
     ret = read(fd, data, sizeof(data));
-    data[128] = '\0';
+    data[sizeof(data)-1] = '\0';
     close(fd);
     if (ret < 0)
         return -errno;