Quoting dinguyen at altera.com (2013-12-13 15:07:11)

quoted

Hi Mike,

Please pull in these 3 patches that cleans up the SOCFPGA clock driver.

Hi Dinh,

Patch #2, "clk: socfpga: Look for the GPIO_DB_CLK by its offset" throws
the following error during compilation:

drivers/clk/socfpga/clk.c: In function ?socfpga_clk_recalc_rate?:
drivers/clk/socfpga/clk.c:238:27: error: invalid operands to binary & (have ?void *? and ?int?)
   if (socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)
                           ^
make[3]: *** [drivers/clk/socfpga/clk.o] Error 1
make[2]: *** [drivers/clk/socfpga] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [drivers/clk] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [drivers] Error 2
make: *** Waiting for unfinished jobs....

Compilation can continue with the following change:

diff --git a/drivers/clk/socfpga/clk.c b/drivers/clk/socfpga/clk.c
index 9350071..da6d82c 100644
--- a/drivers/clk/socfpga/clk.c
+++ b/drivers/clk/socfpga/clk.c

@@ -235,7 +235,7 @@ static unsigned long socfpga_clk_recalc_rate(struct clk_hw *hwclk,
 		val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;
 		val &= div_mask(socfpgaclk->width);
 		/* Check for GPIO_DB_CLK by its offset */
-		if (socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)
+		if ((int) socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)
 			div = val + 1;
 		else
 			div = (1 << val);

I have not applied this change to the patch. Is there anything different
way of handling this that you would prefer?