4.115
Last change
on this file since f58ef8ae was
031b57c,
checked in by Joel Sherrill <joel.sherrill@…>, on 10/09/09 at 13:46:39
|
2009-10-09 Sebastian Huber <Sebastian.Huber@…>
- cpukit/sapi/include/rtems/io.h: Documentation.
- cpukit/sapi/src/ioregisterdriver.c: Call from interrupt context is
an error.
- cpukit/sapi/src/iounregisterdriver.c: Disable preemption during
critical section.
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-
Property mode set to
100644
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File size:
1.2 KB
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Line | |
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1 | /* |
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2 | * Input/Output Manager - Dynamically Unregister Device Driver |
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3 | * |
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4 | * COPYRIGHT (c) 1989-2007. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #if HAVE_CONFIG_H |
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15 | #include "config.h" |
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16 | #endif |
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17 | |
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18 | #include <rtems/system.h> |
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19 | #include <rtems/io.h> |
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20 | #include <rtems/rtems/intr.h> |
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21 | #include <rtems/score/thread.h> |
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22 | #include <string.h> |
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23 | |
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24 | /* |
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25 | * rtems_io_unregister_driver |
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26 | * |
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27 | * Unregister a driver from the device driver table. |
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28 | * |
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29 | * Input Paramters: |
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30 | * major - device major number |
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31 | * |
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32 | * Output Parameters: |
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33 | * RTEMS_SUCCESSFUL - if successful |
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34 | * error code - if unsuccessful |
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35 | */ |
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36 | |
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37 | rtems_status_code rtems_io_unregister_driver( |
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38 | rtems_device_major_number major |
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39 | ) |
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40 | { |
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41 | if ( rtems_interrupt_is_in_progress() ) |
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42 | return RTEMS_CALLED_FROM_ISR; |
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43 | |
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44 | if ( major < _IO_Number_of_drivers ) { |
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45 | _Thread_Disable_dispatch(); |
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46 | memset( |
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47 | &_IO_Driver_address_table[major], |
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48 | 0, |
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49 | sizeof( rtems_driver_address_table ) |
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50 | ); |
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51 | _Thread_Enable_dispatch(); |
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52 | |
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53 | return RTEMS_SUCCESSFUL; |
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54 | } |
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55 | |
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56 | return RTEMS_UNSATISFIED; |
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57 | } |
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