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Code Issues Releases Activity

Bugfix: Set the bit that marks a device number in use.

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This would cause a panic when disconnecting the second serial device.

Submitted by:	Lucius Windschuh
This commit is contained in:
Nick Hibma 2010-11-07 15:36:07 +00:00
parent 12af6654a3
commit 96a6480a53
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214919
1 changed files with 5 additions and 2 deletions
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7
sys/dev/usb/serial/usb_serial.c
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@ -200,9 +200,12 @@ ucom_unit_alloc(void)
mtx_lock(&ucom_bitmap_mtx);
for (unit = 0; unit < UCOM_UNIT_MAX; unit++)
if ((ucom_bitmap[unit / 8] & (1 << (unit % 8))) == 0)
for (unit = 0; unit < UCOM_UNIT_MAX; unit++) {
if ((ucom_bitmap[unit / 8] & (1 << (unit % 8))) == 0) {
ucom_bitmap[unit / 8] |= (1 << (unit % 8));
break;
}
}
mtx_unlock(&ucom_bitmap_mtx);