linux-kernel - [PATCH] reset: tegra-bpmp: Revert Handle errors in BPMP response

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Date:   Fri, 12 Nov 2021 11:27:12 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        Thierry Reding <thierry.reding@...il.com>
CC:     Mikko Perttunen <mperttunen@...dia.com>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Jon Hunter <jonathanh@...dia.com>
Subject: [PATCH] reset: tegra-bpmp: Revert Handle errors in BPMP response

Commit c045ceb5a145 ("reset: tegra-bpmp: Handle errors in BPMP
response") fixed an issue in the Tegra BPMP error handling but has
exposed an issue in the Tegra194 HDA driver and now resetting the
Tegra194 HDA controller is failing. For now revert the commit
c045ceb5a145 ("reset: tegra-bpmp: Handle errors in BPMP response")
while a fix for the Tegra HDA driver is created.

Fixes: c045ceb5a145 ("reset: tegra-bpmp: Handle errors in BPMP response")
Signed-off-by: Jon Hunter <jonathanh@...dia.com>
---
 drivers/reset/tegra/reset-bpmp.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/reset/tegra/reset-bpmp.c b/drivers/reset/tegra/reset-bpmp.c
index 4c5bba52b105..24d3395964cc 100644
--- a/drivers/reset/tegra/reset-bpmp.c
+++ b/drivers/reset/tegra/reset-bpmp.c
@@ -20,7 +20,6 @@ static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc,
 	struct tegra_bpmp *bpmp = to_tegra_bpmp(rstc);
 	struct mrq_reset_request request;
 	struct tegra_bpmp_message msg;
-	int err;
 
 	memset(&request, 0, sizeof(request));
 	request.cmd = command;
@@ -31,13 +30,7 @@ static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc,
 	msg.tx.data = &request;
 	msg.tx.size = sizeof(request);
 
-	err = tegra_bpmp_transfer(bpmp, &msg);
-	if (err)
-		return err;
-	if (msg.rx.ret)
-		return -EINVAL;
-
-	return 0;
+	return tegra_bpmp_transfer(bpmp, &msg);
 }
 
 static int tegra_bpmp_reset_module(struct reset_controller_dev *rstc,
-- 
2.25.1