77e97abf12
Also removes random module and switches to new bcm2711 thermal driver. Boot tested on RPi 4B v1.1 4G. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
From e005a4db95a48e8b14a2017bf56a0e3f3dccfa6d Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
|
Date: Tue, 5 May 2020 19:45:41 +0100
|
|
Subject: [PATCH] video: bcm2708_fb: Disable FB if no displays found
|
|
|
|
If the firmware hasn't detected a display, the driver would assume
|
|
one display was available, but because it had failed to retrieve the
|
|
display size it would try to allocate a zero-sized buffer.
|
|
|
|
Avoid the allocation failure by bailing out early if no display is
|
|
found.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/3598
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
|
---
|
|
drivers/video/fbdev/bcm2708_fb.c | 5 ++---
|
|
1 file changed, 2 insertions(+), 3 deletions(-)
|
|
|
|
--- a/drivers/video/fbdev/bcm2708_fb.c
|
|
+++ b/drivers/video/fbdev/bcm2708_fb.c
|
|
@@ -1104,10 +1104,9 @@ static int bcm2708_fb_probe(struct platf
|
|
* set one display
|
|
*/
|
|
if (ret || num_displays == 0) {
|
|
- num_displays = 1;
|
|
dev_err(&dev->dev,
|
|
- "Unable to determine number of FB's. Assuming 1\n");
|
|
- ret = 0;
|
|
+ "Unable to determine number of FBs. Disabling driver.\n");
|
|
+ return -ENOENT;
|
|
} else {
|
|
fbdev->firmware_supports_multifb = 1;
|
|
}
|