This is a note to let you know that I've just added the patch titled
drm/panfrost: Skip speed binning on EOPNOTSUPP
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-panfrost-skip-speed-binning-on-eopnotsupp.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f19df6e4de64b7fc6d71f192aa9ff3b701e4bade Mon Sep 17 00:00:00 2001
From: David Michael <fedora.dm0@xxxxxxxxx>
Date: Tue, 15 Aug 2023 21:42:41 -0400
Subject: drm/panfrost: Skip speed binning on EOPNOTSUPP
From: David Michael <fedora.dm0@xxxxxxxxx>
commit f19df6e4de64b7fc6d71f192aa9ff3b701e4bade upstream.
Encountered on an ARM Mali-T760 MP4, attempting to read the nvmem
variable can also return EOPNOTSUPP instead of ENOENT when speed
binning is unsupported.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 7d690f936e9b ("drm/panfrost: Add basic support for speed binning")
Signed-off-by: David Michael <fedora.dm0@xxxxxxxxx>
Reviewed-by: Steven Price <steven.price@xxxxxxx>
Signed-off-by: Steven Price <steven.price@xxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/87msyryd7y.fsf@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 58dfb15a8757..e78de99e9933 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -96,7 +96,7 @@ static int panfrost_read_speedbin(struct device *dev)
* keep going without it; any other error means that we are
* supposed to read the bin value, but we failed doing so.
*/
- if (ret != -ENOENT) {
+ if (ret != -ENOENT && ret != -EOPNOTSUPP) {
DRM_DEV_ERROR(dev, "Cannot read speed-bin (%d).", ret);
return ret;
}
--
2.42.0
Patches currently in stable-queue which might be from fedora.dm0@xxxxxxxxx are
queue-6.4/drm-panfrost-skip-speed-binning-on-eopnotsupp.patch
