From: Olof Johansson Subject: [PATCH] hwrng: reorder OMAP TRNG driver code Date: Tue, 20 Aug 2013 11:07:53 -0700 Message-ID: <1377022073-28198-1-git-send-email-olof@lixom.net> Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, Olof Johansson , Lokesh Vutla To: herbert@gondor.hengli.com.au Return-path: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org The newly added omap4 support in the driver was added without consideration for building older configs. When building omap1_defconfig, it resulted in: drivers/char/hw_random/omap-rng.c:190:12: warning: 'omap4_rng_init' defined but not used [-Wunused-function] drivers/char/hw_random/omap-rng.c:215:13: warning: 'omap4_rng_cleanup' defined but not used [-Wunused-function] drivers/char/hw_random/omap-rng.c:251:20: warning: 'omap4_rng_irq' defined but not used [-Wunused-function] Move the code around so it is grouped with its operations struct, which for the omap4 case means also under the #ifdef CONFIG_OF, where it needs to be. Signed-off-by: Olof Johansson Cc: Lokesh Vutla --- drivers/char/hw_random/omap-rng.c | 108 ++++++++++++++++++------------------- 1 file changed, 54 insertions(+), 54 deletions(-) diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c index f3f7142..9b89ff4 100644 --- a/drivers/char/hw_random/omap-rng.c +++ b/drivers/char/hw_random/omap-rng.c @@ -140,16 +140,6 @@ static inline void omap_rng_write(struct omap_rng_dev *priv, u16 reg, __raw_writel(val, priv->base + priv->pdata->regs[reg]); } -static inline u32 omap2_rng_data_present(struct omap_rng_dev *priv) -{ - return omap_rng_read(priv, RNG_STATUS_REG) ? 0 : 1; -} - -static inline u32 omap4_rng_data_present(struct omap_rng_dev *priv) -{ - return omap_rng_read(priv, RNG_STATUS_REG) & RNG_REG_STATUS_RDY; -} - static int omap_rng_data_present(struct hwrng *rng, int wait) { struct omap_rng_dev *priv; @@ -187,6 +177,60 @@ static int omap_rng_data_read(struct hwrng *rng, u32 *data) return data_size; } +static int omap_rng_init(struct hwrng *rng) +{ + struct omap_rng_dev *priv; + + priv = (struct omap_rng_dev *)rng->priv; + return priv->pdata->init(priv); +} + +static void omap_rng_cleanup(struct hwrng *rng) +{ + struct omap_rng_dev *priv; + + priv = (struct omap_rng_dev *)rng->priv; + priv->pdata->cleanup(priv); +} + +static struct hwrng omap_rng_ops = { + .name = "omap", + .data_present = omap_rng_data_present, + .data_read = omap_rng_data_read, + .init = omap_rng_init, + .cleanup = omap_rng_cleanup, +}; + +static inline u32 omap2_rng_data_present(struct omap_rng_dev *priv) +{ + return omap_rng_read(priv, RNG_STATUS_REG) ? 0 : 1; +} + +static int omap2_rng_init(struct omap_rng_dev *priv) +{ + omap_rng_write(priv, RNG_SYSCONFIG_REG, 0x1); + return 0; +} + +static void omap2_rng_cleanup(struct omap_rng_dev *priv) +{ + omap_rng_write(priv, RNG_SYSCONFIG_REG, 0x0); +} + +static struct omap_rng_pdata omap2_rng_pdata = { + .regs = (u16 *)reg_map_omap2, + .data_size = OMAP2_RNG_OUTPUT_SIZE, + .data_present = omap2_rng_data_present, + .init = omap2_rng_init, + .cleanup = omap2_rng_cleanup, +}; + +#if defined(CONFIG_OF) +static inline u32 omap4_rng_data_present(struct omap_rng_dev *priv) +{ + return omap_rng_read(priv, RNG_STATUS_REG) & RNG_REG_STATUS_RDY; +} + static int omap4_rng_init(struct omap_rng_dev *priv) { u32 val; @@ -221,33 +265,6 @@ static void omap4_rng_cleanup(struct omap_rng_dev *priv) omap_rng_write(priv, RNG_CONFIG_REG, val); } -static int omap2_rng_init(struct omap_rng_dev *priv) -{ - omap_rng_write(priv, RNG_SYSCONFIG_REG, 0x1); - return 0; -} - -static void omap2_rng_cleanup(struct omap_rng_dev *priv) -{ - omap_rng_write(priv, RNG_SYSCONFIG_REG, 0x0); -} - -static int omap_rng_init(struct hwrng *rng) -{ - struct omap_rng_dev *priv; - - priv = (struct omap_rng_dev *)rng->priv; - return priv->pdata->init(priv); -} - -static void omap_rng_cleanup(struct hwrng *rng) -{ - struct omap_rng_dev *priv; - - priv = (struct omap_rng_dev *)rng->priv; - priv->pdata->cleanup(priv); -} - static irqreturn_t omap4_rng_irq(int irq, void *dev_id) { struct omap_rng_dev *priv = dev_id; @@ -275,23 +292,6 @@ static irqreturn_t omap4_rng_irq(int irq, void *dev_id) return IRQ_HANDLED; } -static struct hwrng omap_rng_ops = { - .name = "omap", - .data_present = omap_rng_data_present, - .data_read = omap_rng_data_read, - .init = omap_rng_init, - .cleanup = omap_rng_cleanup, -}; - -static struct omap_rng_pdata omap2_rng_pdata = { - .regs = (u16 *)reg_map_omap2, - .data_size = OMAP2_RNG_OUTPUT_SIZE, - .data_present = omap2_rng_data_present, - .init = omap2_rng_init, - .cleanup = omap2_rng_cleanup, -}; - -#if defined(CONFIG_OF) static struct omap_rng_pdata omap4_rng_pdata = { .regs = (u16 *)reg_map_omap4, .data_size = OMAP4_RNG_OUTPUT_SIZE, -- 1.7.10.4