[PATCH V2 6/9] net/stmmac: Remove conditional compilation of clk code

On 4/24/2012 8:16 AM, Giuseppe CAVALLARO wrote:

On 4/24/2012 7:56 AM, Viresh KUMAR wrote:

quoted

With addition of dummy clk_*() calls for non CONFIG_HAVE_CLK cases in clk.h,
there is no need to have clk code enclosed in #ifdef CONFIG_HAVE_CLK, #endif
macros.

Hello Viresh

patch only applies fine against the net-next repository so on top of the
diver version: March_2012 and it builds fine on arch w/ w/o HAVE_CLK
(just tested).

Oops, sorry but on a build I got:

 CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
drivers/built-in.o: In function `stmmac_release':
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1134:
undefined reference to `clk_disable'
drivers/built-in.o: In function `stmmac_open':
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:974:
undefined reference to `clk_enable'
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1079:
undefined reference to `clk_disable'
drivers/built-in.o: In function `stmmac_dvr_probe':
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1931:
undefined reference to `clk_get'
drivers/built-in.o: In function `stmmac_clk_csr_set':
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:174:
undefined reference to `clk_get_rate'
drivers/built-in.o: In function `stmmac_suspend':
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2030:
undefined reference to `clk_disable'
drivers/built-in.o: In function `stmmac_resume':
/stlinux/cavagiu/git/mirror/net-next.git/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2054:
undefined reference to `clk_enable'
make: *** [.tmp_vmlinux1] Error 1

Pls, can you verify?

Peppe

Thanks a lot.

Acked-by: Giuseppe Cavallaro <redacted>

quoted

Signed-off-by: Viresh Kumar <redacted>
Cc: Giuseppe Cavallaro <redacted>
Cc: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h      |   41 ---------------------
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |   31 ++++++++++------
 2 files changed, 19 insertions(+), 53 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index db2de9a..7f85895 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -81,9 +81,7 @@ struct stmmac_priv {
 	struct stmmac_counters mmc;
 	struct dma_features dma_cap;
 	int hw_cap_support;
-#ifdef CONFIG_HAVE_CLK
 	struct clk *stmmac_clk;
-#endif
 	int clk_csr;
 };
 

@@ -103,42 +101,3 @@ int stmmac_dvr_remove(struct net_device *ndev);
 struct stmmac_priv *stmmac_dvr_probe(struct device *device,
 				     struct plat_stmmacenet_data *plat_dat,
 				     void __iomem *addr);
-
-#ifdef CONFIG_HAVE_CLK
-static inline int stmmac_clk_enable(struct stmmac_priv *priv)
-{
-	if (!IS_ERR(priv->stmmac_clk))
-		return clk_enable(priv->stmmac_clk);
-
-	return 0;
-}
-
-static inline void stmmac_clk_disable(struct stmmac_priv *priv)
-{
-	if (IS_ERR(priv->stmmac_clk))
-		return;
-
-	clk_disable(priv->stmmac_clk);
-}
-static inline int stmmac_clk_get(struct stmmac_priv *priv)
-{
-	priv->stmmac_clk = clk_get(priv->device, NULL);
-
-	if (IS_ERR(priv->stmmac_clk))
-		return PTR_ERR(priv->stmmac_clk);
-
-	return 0;
-}
-#else
-static inline int stmmac_clk_enable(struct stmmac_priv *priv)
-{
-	return 0;
-}
-static inline void stmmac_clk_disable(struct stmmac_priv *priv)
-{
-}
-static inline int stmmac_clk_get(struct stmmac_priv *priv)
-{
-	return 0;
-}
-#endif /* CONFIG_HAVE_CLK */

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 1a4cf81..18ce287 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -28,6 +28,7 @@
 	https://bugzilla.stlinux.com/
 *******************************************************************************/
 
+#include <linux/clk.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
 #include <linux/ip.h>

@@ -165,7 +166,6 @@ static void stmmac_verify_args(void)
 
 static void stmmac_clk_csr_set(struct stmmac_priv *priv)
 {
-#ifdef CONFIG_HAVE_CLK
 	u32 clk_rate;
 
 	if (IS_ERR(priv->stmmac_clk))

@@ -192,7 +192,6 @@ static void stmmac_clk_csr_set(struct stmmac_priv *priv)
 	   * we can not estimate the proper divider as it is not known
 	   * the frequency of clk_csr_i. So we do not change the default
 	   * divider. */
-#endif
 }
 
 #if defined(STMMAC_XMIT_DEBUG) || defined(STMMAC_RX_DEBUG)

@@ -971,7 +970,8 @@ static int stmmac_open(struct net_device *dev)
 	} else
 		priv->tm->enable = 1;
 #endif
-	stmmac_clk_enable(priv);
+	if (!IS_ERR(priv->stmmac_clk))
+		clk_enable(priv->stmmac_clk);
 
 	stmmac_check_ether_addr(priv);
 

@@ -1075,7 +1075,8 @@ open_error:
 	if (priv->phydev)
 		phy_disconnect(priv->phydev);
 
-	stmmac_clk_disable(priv);
+	if (!IS_ERR(priv->stmmac_clk))
+		clk_disable(priv->stmmac_clk);
 
 	return ret;
 }

@@ -1128,7 +1129,9 @@ static int stmmac_release(struct net_device *dev)
 #ifdef CONFIG_STMMAC_DEBUG_FS
 	stmmac_exit_fs();
 #endif
-	stmmac_clk_disable(priv);
+
+	if (!IS_ERR(priv->stmmac_clk))
+		clk_disable(priv->stmmac_clk);
 
 	return 0;
 }

@@ -1925,7 +1928,8 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device,
 		goto error;
 	}
 
-	if (stmmac_clk_get(priv))
+	priv->stmmac_clk = clk_get(priv->device, NULL);
+	if (IS_ERR(priv->stmmac_clk))
 		pr_warning("%s: warning: cannot get CSR clock\n", __func__);
 
 	/* If a specific clk_csr value is passed from the platform

@@ -1934,10 +1938,12 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device,
 	 * set the MDC clock dynamically according to the csr actual
 	 * clock input.
 	 */
-	if (!priv->plat->clk_csr)
-		stmmac_clk_csr_set(priv);
-	else
+	if (!priv->plat->clk_csr) {
+		if (!IS_ERR(priv->stmmac_clk))
+			stmmac_clk_csr_set(priv);
+	} else {
 		priv->clk_csr = priv->plat->clk_csr;
+	}
 
 	/* MDIO bus Registration */
 	ret = stmmac_mdio_register(ndev);

@@ -2020,7 +2026,8 @@ int stmmac_suspend(struct net_device *ndev)
 	else {
 		stmmac_set_mac(priv->ioaddr, false);
 		/* Disable clock in case of PWM is off */
-		stmmac_clk_disable(priv);
+		if (!IS_ERR(priv->stmmac_clk))
+			clk_disable(priv->stmmac_clk);
 	}
 	spin_unlock(&priv->lock);
 	return 0;

@@ -2042,9 +2049,9 @@ int stmmac_resume(struct net_device *ndev)
 	 * from another devices (e.g. serial console). */
 	if (device_may_wakeup(priv->device))
 		priv->hw->mac->pmt(priv->ioaddr, 0);
-	else
+	else if (!IS_ERR(priv->stmmac_clk))
 		/* enable the clk prevously disabled */
-		stmmac_clk_enable(priv);
+			clk_enable(priv->stmmac_clk);
 
 	netif_device_attach(ndev);
 

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