Example change, using new sign_extend functions.
---
drivers/media/dvb-frontends/stb0899_algo.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/media/dvb-frontends/stb0899_algo.c
b/drivers/media/dvb-frontends/stb0899_algo.c
index 93596e0..7bbcfde 100644
--- a/drivers/media/dvb-frontends/stb0899_algo.c
+++ b/drivers/media/dvb-frontends/stb0899_algo.c
@@ -19,6 +19,7 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <linux/bitops.h>
#include "stb0899_drv.h"
#include "stb0899_priv.h"
#include "stb0899_reg.h"
@@ -1490,9 +1491,7 @@ enum stb0899_status stb0899_dvbs2_algo(struct
stb0899_state *state)
/* Store signal parameters */
offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ);
- /* sign extend 30 bit value before using it in calculations */
- if (offsetfreq & (1 << 29))
- offsetfreq |= -1 << 30;
+ offsetfreq = sign_extend32(offset_freq, 29);
offsetfreq = offsetfreq / ((1 << 30) / 1000);
offsetfreq *= (internal->master_clk / 1000000);
--
2.1.4
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