linux-kernel - [PATCH 5.1 61/70] drm/amdgpu/soc15: skip reset on init

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Message-Id: <20190609164132.590111880@linuxfoundation.org>
Date:   Sun,  9 Jun 2019 18:42:12 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Amber Lin <Amber.Lin@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 5.1 61/70] drm/amdgpu/soc15: skip reset on init

From: Alex Deucher <alexander.deucher@....com>

commit 5887a59961e2295c5b02f39dbc0ecf9212709b7b upstream.

Not necessary on soc15 and breaks driver reload on server cards.

Acked-by: Amber Lin <Amber.Lin@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/soc15.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -713,6 +713,11 @@ static bool soc15_need_reset_on_init(str
 {
 	u32 sol_reg;
 
+	/* Just return false for soc15 GPUs.  Reset does not seem to
+	 * be necessary.
+	 */
+	return false;
+
 	if (adev->flags & AMD_IS_APU)
 		return false;