| Mauro Carvalho Chehab | 6d17249 | 2011-07-05 10:07:37 -0300 | [diff] [blame] | 1 | <title>Generic Error Codes</title> |
| 2 | |
| 3 | <table frame="none" pgwide="1" id="gen-errors"> |
| 4 | <title>Generic error codes</title> |
| 5 | <tgroup cols="2"> |
| 6 | &cs-str; |
| 7 | <tbody valign="top"> |
| 8 | <row> |
| 9 | <entry>EBUSY</entry> |
| 10 | <entry>The ioctl can't be handled because the device is busy. This is |
| 11 | typically return while device is streaming, and an ioctl tried to |
| 12 | change something that would affect the stream, or would require the |
| Mauro Carvalho Chehab | 43c1daa | 2011-07-05 11:22:28 -0300 | [diff] [blame^] | 13 | usage of a hardware resource that was already allocated. The ioctl |
| 14 | must not be retried without performing another action to fix the |
| 15 | problem first (typically: stop the stream before retrying).</entry> |
| 16 | </row> |
| 17 | <row> |
| 18 | <entry>EINVAL</entry> |
| 19 | <entry>The ioctl is not supported by the driver, actually meaning that |
| 20 | the required functionality is not available.</entry> |
| 21 | </row> |
| 22 | <row> |
| 23 | <entry>ENOMEM</entry> |
| 24 | <entry>There's not enough memory to handle the desired operation.</entry> |
| 25 | </row> |
| 26 | <row> |
| 27 | <entry>ENOSPC</entry> |
| 28 | <entry>On USB devices, the stream ioctl's can return this error meaning |
| 29 | that this request would overcommit the usb bandwidth reserved |
| 30 | for periodic transfers (up to 80% of the USB bandwidth).</entry> |
| Mauro Carvalho Chehab | 6d17249 | 2011-07-05 10:07:37 -0300 | [diff] [blame] | 31 | </row> |
| 32 | </tbody> |
| 33 | </tgroup> |
| 34 | </table> |