Commit eb258cc1 authored by Mikko Perttunen's avatar Mikko Perttunen Committed by Thierry Reding
Browse files

gpu: host1x: Don't skip assigning syncpoints to channels 



The code to write the syncpoint channel assignment register
incorrectly skips the write if hypervisor registers are not available.

The register, however, is within the guest aperture so remove the
check and assign syncpoints properly even on virtualized systems.

Fixes: c3f52220 ("gpu: host1x: Enable Tegra186 syncpoint protection")
Signed-off-by: default avatarMikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 79aad29c

drivers/gpu/host1x/hw/syncpt_hw.c

+0 −3
Original line number Original line Diff line number Diff line
@@ -106,9 +106,6 @@ static void syncpt_assign_to_channel(struct host1x_syncpt *sp, 
#if HOST1X_HW >= 6

#if HOST1X_HW >= 6

	struct host1x *host = sp->host;

	struct host1x *host = sp->host;





	if (!host->hv_regs)

		return;



	host1x_sync_writel(host,

	host1x_sync_writel(host,

			   HOST1X_SYNC_SYNCPT_CH_APP_CH(ch ? ch->id : 0xff),

			   HOST1X_SYNC_SYNCPT_CH_APP_CH(ch ? ch->id : 0xff),

			   HOST1X_SYNC_SYNCPT_CH_APP(sp->id));

			   HOST1X_SYNC_SYNCPT_CH_APP(sp->id));