Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into next/clockclock

* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ARM: Orion: SDIO: Add support for clk.
  ARM: Orion: NAND: Add support for clk, if there is one.
  ARM: Orion: EHCI: Add support for enabling clocks
  ARM: Orion: SATA: Add per channel clk/clkdev support.
  ARM: Orion: UART: Get the clock rate via clk_get_rate().
  ARM: Orion: WDT: Add clk/clkdev support
  ARM: Orion: Eth: Add clk/clkdev support.
  ARM: Orion: SPI: Add clk/clkdev support.
  ARM: Orion: Add clocks using the generic clk infrastructure.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index e6ecc5f23943..1cc6b3f3e262 100644
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -16,6 +16,7 @@
 #include <linux/scatterlist.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/clk.h>
 #include <crypto/internal/hash.h>
 #include <crypto/sha.h>
 
@@ -79,6 +80,7 @@ struct crypto_priv {
 	void __iomem *reg;
 	void __iomem *sram;
 	int irq;
+	struct clk *clk;
 	struct task_struct *queue_th;
 
 	/* the lock protects queue and eng_st */
@@ -1053,6 +1055,12 @@ static int mv_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_thread;
 
+	/* Not all platforms can gate the clock, so it is not
+	   an error if the clock does not exists. */
+	cp->clk = clk_get(&pdev->dev, NULL);
+	if (!IS_ERR(cp->clk))
+		clk_prepare_enable(cp->clk);
+
 	writel(SEC_INT_ACCEL0_DONE, cpg->reg + SEC_ACCEL_INT_MASK);
 	writel(SEC_CFG_STOP_DIG_ERR, cpg->reg + SEC_ACCEL_CFG);
 	writel(SRAM_CONFIG, cpg->reg + SEC_ACCEL_DESC_P0);
@@ -1118,6 +1126,12 @@ static int mv_remove(struct platform_device *pdev)
 	memset(cp->sram, 0, cp->sram_size);
 	iounmap(cp->sram);
 	iounmap(cp->reg);
+
+	if (!IS_ERR(cp->clk)) {
+		clk_disable_unprepare(cp->clk);
+		clk_put(cp->clk);
+	}
+
 	kfree(cp);
 	cpg = NULL;
 	return 0;