[PATCH] sysfs test patch

["Ashok kumar" <ashokmudalister@xxxxxxxxx>]

Hi,

 

i have updated sysfs test patch. i have done changes to write some sysfs attribute which was not available in the original patch. The original patch is http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/gregkh/sysfs-test.patch

 

My Request:

----------------

please comment on my changes, and suggest me what else i can do on this.

 

doubt:

--------

    i am not able to understand the lines of the original patch, which are commented with "#if 0 ... #endif". it would be great, if anyone can give some explanation on those lines.

 

patch:

----------

 

--- linux-2.6.20/drivers/gregkh/gregkh.c.orig 2007-04-24 14:09:12.000000000 +0530
+++ linux-2.6.20/drivers/gregkh/gregkh.c 2007-04-24 14:12:11.000000000 +0530
@@ -121,6 +121,35 @@ static ssize_t void_ptr_show(struct greg
  return sprintf(buf, "%p\n", *val);
 }
 
+static ssize_t u32_store(struct greg *g, char *buf, size_t count)
+{
+        int temp = simple_strtoul(buf,NULL,10);
+        g->a = temp;
+        dbg("%s val=%d \n", __FUNCTION__, g->a);
+        return count;
+}
+static ssize_t u16_store(struct greg *g, char *buf, size_t count)
+{
+        int temp = simple_strtoul(buf,NULL,10);
+        g->b = temp;
+        dbg("%s val=%d \n", __FUNCTION__, g->b);
+        return count;
+}
+static ssize_t u8_store(struct greg *g, char *buf, size_t count)
+{
+        int temp = simple_strtoul(buf,NULL,10);
+        g->c = temp;
+        dbg("%s val=%d \n", __FUNCTION__, g->c);
+        return count;
+}
+static ssize_t void_ptr_store(struct greg *g, char *buf, size_t count)
+{
+        int temp = simple_strtoul(buf,NULL,10);
+        g->d = (void *)temp;
+        dbg("%s val=%p \n", __FUNCTION__, g->d);
+        return count;
+}
+
 #define to_d_greg(obj) container_of(obj, struct d_greg, g)
 
 #if 0
@@ -170,9 +199,10 @@ static void x(struct greg *g)
 
 #define G_RO(_name, _var, _type) \
 static struct greg_attribute _name##_attr = { \
- .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
+ .attr = { .name = __stringify(_name), .mode = 0644, .owner = THIS_MODULE }, \
  .offset = offsetof(struct greg, _var), \
  .show = _type##_show, \
+ .store  = _type##_store, \
 }
 
 G_RO(a, a, u32);
 

 

 

thanks

Ashok