6.4-stable review patch. If anyone has any objections, please let me know.
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From: David Michael fedora.dm0@gmail.com
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@vger.kernel.org Fixes: 7d690f936e9b ("drm/panfrost: Add basic support for speed binning") Signed-off-by: David Michael fedora.dm0@gmail.com Reviewed-by: Steven Price steven.price@arm.com Signed-off-by: Steven Price steven.price@arm.com Link: https://patchwork.freedesktop.org/patch/msgid/87msyryd7y.fsf@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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; }