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Add parenthesis so that we get all of the bits all

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of the contents of the CCSCBCTL register into our
local varaible.  The other bits are used in later tests.
This avoids a potential deadlock in ahd_run_qoutfifo()
if we happen to catch the DMA engine in just the right
state.
This commit is contained in:
Justin T. Gibbs 2003-06-23 22:06:34 +00:00
parent ce3ae5c7e3
commit f5db59f9d6
1 changed files with 2 additions and 2 deletions
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4
sys/dev/aic7xxx/aic79xx.c
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@ -37,7 +37,7 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#198 $
* $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#199 $
*
* $FreeBSD$
*/
@ -378,7 +378,7 @@ ahd_flush_qoutfifo(struct ahd_softc *ahd)
* Wait for any inprogress DMA to complete and clear DMA state
* if this if for an SCB in the qinfifo.
*/
while ((ccscbctl = ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN)) != 0) {
while (((ccscbctl = ahd_inb(ahd, CCSCBCTL)) & (CCARREN|CCSCBEN)) != 0) {
if ((ccscbctl & (CCSCBDIR|CCARREN)) == (CCSCBDIR|CCARREN)) {
if ((ccscbctl & ARRDONE) != 0)