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Update some comments.

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Gregory Nutt
2018-04-22 07:36:39 -06:00
parent 505f460b6b
commit f188b35707
2 changed files with 58 additions and 53 deletions
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wireless/bluetooth/bt_ioctl.c
+11 -6
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@@ -107,17 +107,22 @@ struct btnet_rdstate_s
****************************************************************************/
/* At present only a single Bluetooth device is supported. So we can simply
* maintain the scan, MTU exchange, and discovery states as globals.
* maintain the pending scan, discovery, MTU exchange, read and write states
* as globals.
*
* NOTE: This limits to a single Bluetooth device with one concurrent scan
* action, one concurrent MTU exchange, and one concurrent discovery action.
* action, one concurrent MTU exchange, one concurrent discovery action,
* etc.
*
* REVISIT: A fix might be to (1) allocate instances on each IOCTL command
* the starts an operation, keeping the allocated structures in a list. (2)
* Return a reference number with each such command. That reference number
* would then be used in each IOCTL command that gets the result of the
* previously requested data. (3) The allocated instance would be freed
* wither (1) it is empty or (2) it has expired without being harvested.
* Return a reference number with each such command that starts an
* operation. That reference number would then be used in each IOCTL
* command that gets the result of the requested operation. (3) The
* allocated instance would be freed when either (1) the result has been
* returned or (2) it has expired without being harvested. This implies
* a timer that runs while there are pending operations in order to expire
* the unharvested results.
*/
static struct btnet_scanstate_s g_scanstate;