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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 <davem@davemloft.net>
Cc: Andreas Westin <andreas.westin@stericsson.com>
Cc: linux-crypto@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lee Jones 2013-05-15 10:51:35 +01:00 committed by Linus Walleij
parent 50511449dd
commit 58ba67dd36
1 changed files with 11 additions and 1 deletions
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12
drivers/crypto/ux500/hash/hash_core.c
View File

@ -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);