Updated pcd_lock.c

Anitha241991 · web-flow · commit 49bd04aadf20 · 2021-04-15T11:03:12.000+05:30
diff --git a/custom_drivers/002pseudo_char_driver/pcd_lock.c b/custom_drivers/002pseudo_char_driver/pcd_lock.c
@@ -123,12 +123,9 @@ ssize_t pcd_write(struct file *filp, const char __user *buff, size_t count, loff
 
 	/*copy from user */
 	if(copy_from_user(&device_buffer[*f_pos],buff,count)){
-	mutex_unlock(&pcd_mutex_lock);
+		mutex_unlock(&pcd_mutex_lock);
 		return -EFAULT;
 	}
-	
-	else {
-
 	/*update the current file postion */
 	*f_pos += count;
 
@@ -141,7 +138,6 @@ ssize_t pcd_write(struct file *filp, const char __user *buff, size_t count, loff
 	/*Return number of bytes which have been successfully written */
 	return count;
 }
-}
 
 int pcd_open(struct inode *inode, struct file *filp)
 {

Original file line number	Diff line number	Diff line change
`@@ -123,12 +123,9 @@ ssize_t pcd_write(struct file filp, const char __user buff, size_t count, loff`
`123`	`123`
`124`	`124`	`/copy from user /`
`125`	`125`	`if(copy_from_user(&device_buffer[*f_pos],buff,count)){`
`126`		`- mutex_unlock(&pcd_mutex_lock);`
	`126`	`+ mutex_unlock(&pcd_mutex_lock);`
`127`	`127`	`return -EFAULT;`
`128`	`128`	`}`
`129`		`-`
`130`		`- else {`
`131`		`-`
`132`	`129`	`/update the current file postion /`
`133`	`130`	`*f_pos += count;`
`134`	`131`
`@@ -141,7 +138,6 @@ ssize_t pcd_write(struct file filp, const char __user buff, size_t count, loff`
`141`	`138`	`/Return number of bytes which have been successfully written /`
`142`	`139`	`return count;`
`143`	`140`	`}`
`144`		`-}`
`145`	`141`
`146`	`142`	`int pcd_open(struct inode inode, struct file filp)`
`147`	`143`	`{`