[patch #2 3/6] SM501: Fix sm501_init_reg() mask/set order

[ben@fluff.org.uk]

The order of the set and mask operation in sm501_init_reg()
was setting and then masking the bits set. Correct the order
so that we do not end up with 288MHz SDRAM clocks on certain
systems.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Index: linux-2.6.21-quilt8/drivers/mfd/sm501.c
===================================================================
--- linux-2.6.21-quilt8.orig/drivers/mfd/sm501.c	2007-06-07 12:13:03.000000000 +0100
+++ linux-2.6.21-quilt8/drivers/mfd/sm501.c	2007-06-07 12:13:06.000000000 +0100
@@ -803,6 +803,9 @@ static DEVICE_ATTR(dbg_regs, 0666, sm501
 /* sm501_init_reg
  *
  * Helper function for the init code to setup a register
+ *
+ * clear the bits which are set in r->mask, and then set
+ * the bits set in r->set.
 */
 
 static inline void sm501_init_reg(struct sm501_devdata *sm,
@@ -812,8 +815,8 @@ static inline void sm501_init_reg(struct
 	unsigned long tmp;
 
 	tmp = readl(sm->regs + reg);
-	tmp |= r->set;
 	tmp &= ~r->mask;
+	tmp |= r->set;
 	writel(tmp, sm->regs + reg);
 }
 

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/