git: 8518513d2436 - stable/12 - Stop the VESA driver from whining loudly in the dmesg during boot on systems that use EFI instead of BIOS.

The branch stable/12 has been updated by emaste:

URL: https://cgit.FreeBSD.org/src/commit/?id=8518513d2436386bb16dac9f344679c2a9b75634

commit 8518513d2436386bb16dac9f344679c2a9b75634
Author:     Scott Long <scottl@FreeBSD.org>
AuthorDate: 2019-11-13 15:31:31 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2022-03-21 15:54:35 +0000

    Stop the VESA driver from whining loudly in the dmesg during boot on
    systems that use EFI instead of BIOS.
    
    (cherry picked from commit 2058e7dbde0f030105007f0f34699fdc0d8e3444)
    
    PR:             213045
---
 sys/dev/fb/vesa.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/sys/dev/fb/vesa.c b/sys/dev/fb/vesa.c
index 47f768abcc92..ac981cad34ce 100644
--- a/sys/dev/fb/vesa.c
+++ b/sys/dev/fb/vesa.c
@@ -1935,6 +1935,12 @@ vesa_load(void)
 	if (error == 0)
 		vesa_bios_info(bootverbose);
 
+	/* Don't return ENODEV, the upper layers will whine. */
+	if (error == ENODEV) {
+		error = 0;
+		vesa_adp = NULL;
+	}
+
 	return (error);
 }
 
@@ -1943,8 +1949,12 @@ vesa_unload(void)
 {
 	int error;
 
+	/* The driver never initialized, so make it easy to unload. */
+	if (vesa_adp == NULL)
+		return (0);
+
 	/* if the adapter is currently in a VESA mode, don't unload */
-	if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
+	if (VESA_MODE(vesa_adp->va_mode))
 		return (EBUSY);
 	/* 
 	 * FIXME: if there is at least one vty which is in a VESA mode,