Put a comment, explaining why kbdmux(4) had to be fixed.
While I'm here fix a couple of whitespaces. Requested by: netchild MFC after: 1 day
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=156013
@ -246,7 +246,16 @@ kbdmux_kbd_event(keyboard_t *kbd, int event, void *arg)
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KBDMUX_LOCK(state);
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/* read all chars from the keyboard */
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/*
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* Read all chars from the keyboard
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*
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* Turns out that atkbd(4) check_char() method may return
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* "true" while read_char() method returns NOKEY. If this
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* happens we could stuck in the loop below. Avoid this
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* by breaking out of the loop if read_char() method returns
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* NOKEY.
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*/
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while (KBDMUX_CHECK_CHAR(kbd)) {
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c = KBDMUX_READ_CHAR(kbd, 0);
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if (c == NOKEY)
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@ -1128,8 +1137,8 @@ kbdmux_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
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break;
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case PIO_KEYMAP: /* set keyboard translation table */
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case PIO_KEYMAPENT: /* set keyboard translation table entry */
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case PIO_DEADKEYMAP: /* set accent key translation table */
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case PIO_KEYMAPENT: /* set keyboard translation table entry */
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case PIO_DEADKEYMAP: /* set accent key translation table */
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KBDMUX_LOCK(state);
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state->ks_accents = 0;
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