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Don't attempt to free null cblocks. There may be less to free than

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normal due to cblock resource starvation or malloc() failing when
the device is opened.
This commit is contained in:
Bruce Evans 1994-10-30 19:43:49 +00:00
parent c20c8046d5
commit a6a21d9edf
2 changed files with 6 additions and 2 deletions
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4
sys/kern/subr_clist.c
View File

@ -6,7 +6,7 @@
* of this software, nor does the author assume any responsibility
* for damages incurred with its use.
*
* $Id: tty_subr.c,v 1.6 1994/09/13 16:02:20 davidg Exp $
* $Id: tty_subr.c,v 1.7 1994/09/25 19:33:50 phk Exp $
*/
/*
@ -118,6 +118,8 @@ cblock_free_cblocks(number)
for (i = 0; i < number; ++i) {
tmp = cblock_alloc();
if (tmp == NULL)
return;
free(tmp, M_TTYS);
}
}

4
sys/kern/tty_subr.c
View File

@ -6,7 +6,7 @@
* of this software, nor does the author assume any responsibility
* for damages incurred with its use.
*
* $Id: tty_subr.c,v 1.6 1994/09/13 16:02:20 davidg Exp $
* $Id: tty_subr.c,v 1.7 1994/09/25 19:33:50 phk Exp $
*/
/*
@ -118,6 +118,8 @@ cblock_free_cblocks(number)
for (i = 0; i < number; ++i) {
tmp = cblock_alloc();
if (tmp == NULL)
return;
free(tmp, M_TTYS);
}
}