Working file: header.h

head: 1.5

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total revisions: 5;	selected revisions: 5

description:

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revision 1.5

date: 2015/04/26 15:51:54;  author: root; 
state: Exp;  lines: +1 -0

removed the struct of cdev.

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revision 1.4

date: 2015/04/26 14:41:40;  author: root; 
state: Exp;  lines: +1 -1

introduced the stucture for mapping

stuct Qset, struct dev where our devices node
information is stored.

in struct dev struct cdev is declared
internally.

also declared the extern struct dev *sdev
pointer for mapping

,

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revision 1.3

date: 2015/04/26 13:28:55;  author: root; 
state: Exp;  lines: +1 -0

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revision 1.2

date: 2015/04/26 13:18:47;  author: root; 
state: Exp;  lines: +3 -0

*** empty log message ***

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revision 1.1

date: 2015/04/26 13:12:11;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: declaration.h,v

Working file: declaration.h

head: 1.5

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total revisions: 5;	selected revisions: 5

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revision 1.5

date: 2015/04/26 17:35:00;  author: root; 
state: Exp;  lines: +1 -0

introduced extern file operations variable.

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revision 1.4

date: 2015/04/26 15:52:20;  author: root; 
state: Exp;  lines: +2 -2

include the linux/cdev.h in header.h

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revision 1.3

date: 2015/04/26 14:45:32;  author: root; 
state: Exp;  lines: +19 -0

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revision 1.2

date: 2015/04/26 13:18:47;  author: root; 
state: Exp;  lines: +1 -0

*** empty log message ***

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revision 1.1

date: 2015/04/26 13:12:11;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: new_initialization.c,v

Working file: new_initialization.c

head: 1.8

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total revisions: 8;	selected revisions: 8

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revision 1.8

date: 2015/04/26 17:23:35;  author: root; 
state: Exp;  lines: +16 -2

initialize cdev_init and pass the 1st arguement
which is address of cdev which is pointed by object of struct dev.

2nd arguement is address of file_operations.

after cdev_init also initialized owner field and
file_operations *ops field which is actually defined in cdev.h.

after initialization of cdev_init, we need to
make the connection by using cdev_add().

In cdev_add(),mentioned the address pointed by
dev to cdev, 2nd arguement is dev and 3rd one is no. of devices we
added which is nod.

successfully cdev_add() is done, the driver
initilization is complete.

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revision 1.7

date: 2015/04/26 16:11:06;  author: root; 
state: Exp;  lines: +4 -3

add the if statement in kmalloc error checking.

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revision 1.6

date: 2015/04/26 15:51:07;  author: root; 
state: Exp;  lines: +2 -1

correct the mistake done is kmalloc of FLAG.

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revision 1.5

date: 2015/04/26 14:40:00;  author: root; 
state: Exp;  lines: +8 -0

declared kmalloc and provide space into the
kernel.

after that memset flushed the memory.

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revision 1.4

date: 2015/04/26 13:30:58;  author: root; 
state: Exp;  lines: +1 -0

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revision 1.3

date: 2015/04/26 13:28:53;  author: root; 
state: Exp;  lines: +3 -1

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revision 1.2

date: 2015/04/26 13:18:42;  author: root; 
state: Exp;  lines: +1 -0

*** empty log message ***

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revision 1.1

date: 2015/04/26 13:12:11;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: new_clean.c,v

Working file: new_clean.c

head: 1.6

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total revisions: 6;	selected revisions: 6

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revision 1.6

date: 2015/04/26 17:33:01;  author: root; 
state: Exp;  lines: +1 -1

The device represented stucture cdev must be
removed from the device table by using cdev_del by giving the
arguement which is address pointed dev to cdev.

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revision 1.5

date: 2015/04/26 15:37:52;  author: root; 
state: Exp;  lines: +1 -1

change the kfree arguement i.e address of struct
dev.

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revision 1.4

date: 2015/04/26 14:41:00;  author: root; 
state: Exp;  lines: +1 -0

kfree() is used before unregistered the driver.

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revision 1.3

date: 2015/04/26 13:28:55;  author: root; 
state: Exp;  lines: +1 -1

*** empty log message ***

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revision 1.2

date: 2015/04/26 13:18:44;  author: root; 
state: Exp;  lines: +1 -0

*** empty log message ***

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revision 1.1

date: 2015/04/26 13:12:11;  author: root; 
state: Exp;

Initial revision

=============================================================================