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| author |   Saurabh Sengar <ssengar@linux.microsoft.com> | 2022-09-23 10:09:50 +0000 |
|---|---|---|
| committer |   Wei Liu <wei.liu@kernel.org> | 2022-09-23 10:11:20 +0000 |
| commit | 19b5e6659eaf537ebeac90ae30c7df0296fe5ab9 (patch) | |
| tree | 615e3ffe8d44710cd813d274cf84b5f848511a32 /drivers | |
| parent | Drivers: hv: vmbus: Optimize vmbus_on_event (diff) | |
| download | linux-dev-19b5e6659eaf537ebeac90ae30c7df0296fe5ab9.tar.xz linux-dev-19b5e6659eaf537ebeac90ae30c7df0296fe5ab9.zip | |
drm/hyperv: Don't overwrite dirt_needed value set by host
Existing code is causing a race condition where dirt_needed value is
already set by the host and gets overwritten with default value. Remove
this default setting of dirt_needed, to avoid overwriting the value
received in the channel callback set by vmbus_open. Removing this
setting also means the default value for dirt_needed is changed to false
as it's allocated by kzalloc which is similar to legacy hyperv_fb driver.
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1662996766-19304-1-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c index f84d39762a72..ca127ff797f7 100644 --- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c +++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c @@ -142,8 +142,6 @@ static int hyperv_vmbus_probe(struct hv_device *hdev, if (ret) drm_warn(dev, "Failed to update vram location.\n"); - hv->dirt_needed = true; - ret = hyperv_mode_config_init(hv); if (ret) goto err_free_mmio; |