On 2/13/20 2:30 AM, Andrei Gherzan wrote:
When starting psplash as early as possible in the boot process, the fb
device node might not be ready. This patch adds a loop on reading the
fb0 device with a timeout of 5 seconds.
Signed-off-by: Andrei Gherzan <[email protected]>
---
psplash-fb.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/psplash-fb.c b/psplash-fb.c
index 6603572..6700a3b 100644
--- a/psplash-fb.c
+++ b/psplash-fb.c
@@ -137,6 +137,7 @@ psplash_fb_new (int angle, int fbdev_id)
struct fb_fix_screeninfo fb_fix;
int off;
char fbdev[9] = "/dev/fb0";
+ int retries = 0;
PSplashFB *fb = NULL;
@@ -156,7 +157,9 @@ psplash_fb_new (int angle, int fbdev_id)
fb->fd = -1;
- if ((fb->fd = open (fbdev, O_RDWR)) < 0)
+ while ((fb->fd = open(fbdev, O_RDWR)) < 0 && retries++ <= 100)
+ usleep(50000);
+ if (fb->fd < 0)
i wonder if there should be a different way to ensure this dependency
perhaps sd_notify for systemd or udev notification maybe ..
{
fprintf(stderr,
"Error opening %s\n",
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