As warned by smatch:
drivers/media/usb/airspy/airspy.c:541 airspy_start_streaming() warn: test_bit() takes a bit number
drivers/media/usb/airspy/airspy.c:569 airspy_start_streaming() warn: test_bit() takes a bit number
drivers/media/usb/airspy/airspy.c:605 airspy_stop_streaming() warn: test_bit() takes a bit number
set_bit/clear_bit argument is the bit number, and not 1 << bit.
Thankfully, one of the bits was not used (URB_BUF), with would
otherwise cause a driver misfunctioning.
Clean this mess by always using set_bit/clear_bit/test_bit and
removing the unused bit.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
---
drivers/media/usb/airspy/airspy.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
index 0d4ac5947f3a..87c12930416f 100644
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -104,9 +104,8 @@ struct airspy_frame_buf {
};
struct airspy {
-#define POWER_ON (1 << 1)
-#define URB_BUF (1 << 2)
-#define USB_STATE_URB_BUF (1 << 3)
+#define POWER_ON 1
+#define USB_STATE_URB_BUF 2
unsigned long flags;
struct device *dev;
@@ -359,7 +358,7 @@ static int airspy_submit_urbs(struct airspy *s)
static int airspy_free_stream_bufs(struct airspy *s)
{
- if (s->flags & USB_STATE_URB_BUF) {
+ if (test_bit(USB_STATE_URB_BUF, &s->flags)) {
while (s->buf_num) {
s->buf_num--;
dev_dbg(s->dev, "free buf=%d\n", s->buf_num);
@@ -368,7 +367,7 @@ static int airspy_free_stream_bufs(struct airspy *s)
s->dma_addr[s->buf_num]);
}
}
- s->flags &= ~USB_STATE_URB_BUF;
+ clear_bit(USB_STATE_URB_BUF, &s->flags);
return 0;
}
@@ -394,7 +393,7 @@ static int airspy_alloc_stream_bufs(struct airspy *s)
dev_dbg(s->dev, "alloc buf=%d %p (dma %llu)\n", s->buf_num,
s->buf_list[s->buf_num],
(long long)s->dma_addr[s->buf_num]);
- s->flags |= USB_STATE_URB_BUF;
+ set_bit(USB_STATE_URB_BUF, &s->flags);
}
return 0;
--
2.5.0
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