From 58ba67dd36aa393132108ffcaa83873a1f82d70a Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 15 May 2013 10:51:35 +0100 Subject: [PATCH] crypto: ux500/hash - Prepare clock before enabling it If we fail to prepare the ux500-hash clock before enabling it the platform will fail to boot. Here we insure this happens. Cc: David S. Miller Cc: Andreas Westin Cc: linux-crypto@vger.kernel.org Acked-by: Herbert Xu Acked-by: Arnd Bergmann Acked-by: Ulf Hansson Signed-off-by: Lee Jones Signed-off-by: Linus Walleij --- drivers/crypto/ux500/hash/hash_core.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ux500/hash/hash_core.c b/drivers/crypto/ux500/hash/hash_core.c index cf5508967539..4b024280def1 100644 --- a/drivers/crypto/ux500/hash/hash_core.c +++ b/drivers/crypto/ux500/hash/hash_core.c @@ -1726,11 +1726,17 @@ static int ux500_hash_probe(struct platform_device *pdev) goto out_regulator; } + ret = clk_prepare(device_data->clk); + if (ret) { + dev_err(dev, "[%s] clk_prepare() failed!", __func__); + goto out_clk; + } + /* Enable device power (and clock) */ ret = hash_enable_power(device_data, false); if (ret) { dev_err(dev, "[%s]: hash_enable_power() failed!", __func__); - goto out_clk; + goto out_clk_unprepare; } ret = hash_check_hw(device_data); @@ -1762,6 +1768,9 @@ static int ux500_hash_probe(struct platform_device *pdev) out_power: hash_disable_power(device_data, false); +out_clk_unprepare: + clk_unprepare(device_data->clk); + out_clk: clk_put(device_data->clk); @@ -1826,6 +1835,7 @@ static int ux500_hash_remove(struct platform_device *pdev) dev_err(dev, "[%s]: hash_disable_power() failed", __func__); + clk_unprepare(device_data->clk); clk_put(device_data->clk); regulator_put(device_data->regulator); -- 2.20.1