[patch] Staging: comedi: pcl730: fix some bitwise vs logical AND bugs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



These conditions are never true because they use bitwise AND instead of
logical ands.

Fixes: b3ff824a81e8 ('staging: comedi: drivers: use comedi_dio_update_state() for complex cases')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/staging/comedi/drivers/pcl730.c b/drivers/staging/comedi/drivers/pcl730.c
index d041b71..2baaf1d 100644
--- a/drivers/staging/comedi/drivers/pcl730.c
+++ b/drivers/staging/comedi/drivers/pcl730.c
@@ -173,11 +173,11 @@ static int pcl730_do_insn_bits(struct comedi_device *dev,
 	if (mask) {
 		if (mask & 0x00ff)
 			outb(s->state & 0xff, dev->iobase + reg);
-		if ((mask & 0xff00) & (s->n_chan > 8))
+		if ((mask & 0xff00) && (s->n_chan > 8))
 			outb((s->state >> 8) & 0xff, dev->iobase + reg + 1);
-		if ((mask & 0xff0000) & (s->n_chan > 16))
+		if ((mask & 0xff0000) && (s->n_chan > 16))
 			outb((s->state >> 16) & 0xff, dev->iobase + reg + 2);
-		if ((mask & 0xff000000) & (s->n_chan > 24))
+		if ((mask & 0xff000000) && (s->n_chan > 24))
 			outb((s->state >> 24) & 0xff, dev->iobase + reg + 3);
 	}
 
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel




[Index of Archives]     [Linux Driver Backports]     [DMA Engine]     [Linux GPIO]     [Linux SPI]     [Video for Linux]     [Linux USB Devel]     [Linux Coverity]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux