diff mbox series

[v2,2/4] lib/math/int_log: Use ARRAY_SIZE(logtable) where makes sense

Message ID 20230703135211.87416-3-andriy.shevchenko@linux.intel.com
State Accepted
Commit 08f6a14b2d376e96cb7166694193ec3c3a496d25
Headers show
Series [v2,1/4] lib/math: Move dvb_math.c into lib/math/int_log.c | expand

Commit Message

Andy Shevchenko July 3, 2023, 1:52 p.m. UTC 
Use ARRAY_SIZE(logtable) where makes sense.

Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/20230619172019.21457-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 lib/math/int_log.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/lib/math/int_log.c b/lib/math/int_log.c
index 322df25a22d6..ea98fc0b3fe2 100644
--- a/lib/math/int_log.c
+++ b/lib/math/int_log.c
@@ -91,7 +91,7 @@  unsigned int intlog2(u32 value)
 	 *	so we would use the entry 0x18
 	 */
 	significand = value << (31 - msb);
-	logentry = (significand >> 23) & 0xff;
+	logentry = (significand >> 23) % ARRAY_SIZE(logtable);
 
 	/**
 	 *	last step we do is interpolation because of the
@@ -109,7 +109,7 @@  unsigned int intlog2(u32 value)
 	 *	logtable_next is 256
 	 */
 	interpolation = ((significand & 0x7fffff) *
-			((logtable[(logentry + 1) & 0xff] -
+			((logtable[(logentry + 1) % ARRAY_SIZE(logtable)] -
 			  logtable[logentry]) & 0xffff)) >> 15;
 
 	/* now we return the result */