h8300: unaligned divcr register support.

DIVCR is unaligned long word.
So we need adjustment for long word align.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/clk/h8300/clk-div.c b/drivers/clk/h8300/clk-div.c
index 1dd5d14d5dbe..d71d01157dbb 100644
--- a/drivers/clk/h8300/clk-div.c
+++ b/drivers/clk/h8300/clk-div.c
@@ -19,6 +19,7 @@ static void __init h8300_div_clk_setup(struct device_node *node)
 	const char *parent_name;
 	void __iomem *divcr = NULL;
 	int width;
+	int offset;
 
 	num_parents = of_clk_get_parent_count(node);
 	if (num_parents < 1) {
@@ -31,11 +32,14 @@ static void __init h8300_div_clk_setup(struct device_node *node)
 		pr_err("%s: failed to map divide register", clk_name);
 		goto error;
 	}
+	offset = (unsigned long)divcr & 3;
+	offset = (3 - offset) * 8;
+	divcr = (void *)((unsigned long)divcr & ~3);
 
 	parent_name = of_clk_get_parent_name(node, 0);
 	of_property_read_u32(node, "renesas,width", &width);
 	clk = clk_register_divider(NULL, clk_name, parent_name,
-				   CLK_SET_RATE_GATE, divcr, 0, width,
+				   CLK_SET_RATE_GATE, divcr, offset, width,
 				   CLK_DIVIDER_POWER_OF_TWO, &clklock);
 	if (!IS_ERR(clk)) {
 		of_clk_add_provider(node, of_clk_src_simple_get, clk);