media: davinci_vpfe: cleanup ipipe_[g|s]_config logic

Reduce one ident level inside those functions and use BIT()
macro.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/staging/media/davinci_vpfe/dm365_ipipe.c

@@ -27,6 +27,7 @@
  */
 
 #include <linux/slab.h>
+#include <linux/bitops.h>
 
 #include "dm365_ipipe.h"
 #include "dm365_ipipe_hw.h"
@@ -1255,17 +1256,19 @@ static int ipipe_s_config(struct v4l2_subdev *sd, struct vpfe_ipipe_config *cfg)
 	int rval = 0;
 
 	for (i = 0; i < ARRAY_SIZE(ipipe_modules); i++) {
-		unsigned int bit = 1 << i;
-
-		if (cfg->flag & bit) {
-			const struct ipipe_module_if *module_if =
-						&ipipe_modules[i];
+		const struct ipipe_module_if *module_if;
 		struct ipipe_module_params *params;
-			void __user *from = *(void * __user *)
-				((void *)cfg + module_if->config_offset);
+		void __user *from;
 		size_t size;
 		void *to;
 
+		if (!(cfg->flag & BIT(i)))
+			continue;
+
+		module_if = &ipipe_modules[i];
+		from = *(void * __user *)
+			((void *)cfg + module_if->config_offset);
+
 		params = kmalloc(sizeof(struct ipipe_module_params),
 				 GFP_KERNEL);
 		to = (void *)params + module_if->param_offset;
@@ -1286,7 +1289,6 @@ static int ipipe_s_config(struct v4l2_subdev *sd, struct vpfe_ipipe_config *cfg)
 		}
 		kfree(params);
 	}
-	}
 error:
 	return rval;
 }
@@ -1298,17 +1300,18 @@ static int ipipe_g_config(struct v4l2_subdev *sd, struct vpfe_ipipe_config *cfg)
 	int rval = 0;
 
 	for (i = 1; i < ARRAY_SIZE(ipipe_modules); i++) {
-		unsigned int bit = 1 << i;
-
-		if (cfg->flag & bit) {
-			const struct ipipe_module_if *module_if =
-						&ipipe_modules[i];
+		const struct ipipe_module_if *module_if;
 		struct ipipe_module_params *params;
-			void __user *to = *(void * __user *)
-				((void *)cfg + module_if->config_offset);
+		void __user *to;
 		size_t size;
 		void *from;
 
+		if (!(cfg->flag & BIT(i)))
+			continue;
+
+		module_if = &ipipe_modules[i];
+		to = *(void * __user *)((void *)cfg + module_if->config_offset);
+
 		params = kmalloc(sizeof(struct ipipe_module_params),
 				 GFP_KERNEL);
 		from = (void *)params + module_if->param_offset;
@@ -1325,7 +1328,6 @@ static int ipipe_g_config(struct v4l2_subdev *sd, struct vpfe_ipipe_config *cfg)
 		}
 		kfree(params);
 	}
-	}
 error:
 	return rval;
 }