RCS file: header.h,v
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
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revision 1.1
date: 2015/04/26 13:12:11; author: root; state: Exp;
Initial revision
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RCS file: declaration.h,v
Working file: declaration.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 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
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revision 1.1
date: 2015/04/26 13:12:11; author: root; state: Exp;
Initial revision
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RCS file: new_initialization.c,v
Working file: new_initialization.c
head: 1.8
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total revisions: 8; selected revisions: 8
description:
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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
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revision 1.1
date: 2015/04/26 13:12:11; author: root; state: Exp;
Initial revision
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RCS file: new_clean.c,v
Working file: new_clean.c
head: 1.6
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total revisions: 6; selected revisions: 6
description:
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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
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revision 1.2
date: 2015/04/26 13:18:44; author: root; state: Exp; lines: +1 -0
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revision 1.1
date: 2015/04/26 13:12:11; author: root; state: Exp;
Initial revision
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