linux-kernel - [PATCH v3] ARC: HSDK: improve reset driver

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Message-Id: <20181017140552.7331-1-Eugeniy.Paltsev@synopsys.com>
Date:   Wed, 17 Oct 2018 17:05:52 +0300
From:   Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>
Cc:     linux-snps-arc@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Alexey Brodkin <alexey.brodkin@...opsys.com>,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
Subject: [PATCH v3] ARC: HSDK: improve reset driver

As for today HSDK reset driver implements only .reset() callback.

In case of driver which implements one of standard
reset controller usage pattern
(call *_deassert() in probe(), call *_assert() in remove())
that leads to inoperability of this reset driver.

Improve HSDK reset driver by calling .reset() callback inside of
.deassert() callback to avoid each reset controller
user adaptation for work with both reset methods
(reset() and {.assert() & .deassert()} pair)

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
---
Changes v2->v3:
 * Drop dummy .assert callback.

 drivers/reset/reset-hsdk.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/reset/reset-hsdk.c b/drivers/reset/reset-hsdk.c
index 8bce391c6943..4c7b8647b49c 100644
--- a/drivers/reset/reset-hsdk.c
+++ b/drivers/reset/reset-hsdk.c
@@ -86,6 +86,7 @@ static int hsdk_reset_reset(struct reset_controller_dev *rcdev,
 
 static const struct reset_control_ops hsdk_reset_ops = {
 	.reset	= hsdk_reset_reset,
+	.deassert = hsdk_reset_reset,
 };
 
 static int hsdk_reset_probe(struct platform_device *pdev)
-- 
2.14.4