Replace the macros SUBWORD() and INV_SUBWORD() with functions to comply
with Linux coding style standards.
Signed-off-by: Brent Pappas <bpappas@xxxxxxxxxxxxxxx>
---
I am not sure if it would better to inline SUBWORD() or turn it into
a function.
On the one hand, SUBWORD() is only invoked once, so it may be better to
to inline it.
On the other hand, the macro defined beside it, INV_SUBWORD() should be
turned into to a function because it is invoked multiple times, so it
may make sense to turn SUBWORD() into a function as well.
I have opted to turn SUBWORD() into a function.
.../pci/hive_isp_css_common/host/vmem.c | 21 +++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c
index 6620f091442f..316abfb72a83 100644
--- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c
+++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c
@@ -28,10 +28,19 @@ typedef hive_uedge *hive_wide;
/* Copied from SDK: sim_semantics.c */
/* subword bits move like this: MSB[____xxxx____]LSB -> MSB[00000000xxxx]LSB */
-#define SUBWORD(w, start, end) (((w) & (((1ULL << ((end) - 1)) - 1) << 1 | 1)) >> (start))
+static inline hive_uedge
+subword(hive_uedge w, unsigned int start, unsigned int end)
+{
+ return (w & (((1ULL << (end - 1)) - 1) << 1 | 1)) >> start;
+}
/* inverse subword bits move like this: MSB[xxxx____xxxx]LSB -> MSB[xxxx0000xxxx]LSB */
-#define INV_SUBWORD(w, start, end) ((w) & (~(((1ULL << ((end) - 1)) - 1) << 1 | 1) | ((1ULL << (start)) - 1)))
+static inline hive_uedge
+inv_subword(hive_uedge w, unsigned int start, unsigned int end)
+{
+ return w & (~(((1ULL << (end - 1)) - 1) << 1 | 1) |
+ ((1ULL << start) - 1));
+}
#define uedge_bits (8 * sizeof(hive_uedge))
#define move_lower_bits(target, target_bit, src, src_bit) move_subword(target, target_bit, src, 0, src_bit)
@@ -50,18 +59,18 @@ move_subword(
unsigned int start_bit = target_bit % uedge_bits;
unsigned int subword_width = src_end - src_start;
- hive_uedge src_subword = SUBWORD(src, src_start, src_end);
+ hive_uedge src_subword = subword(src, src_start, src_end);
if (subword_width + start_bit > uedge_bits) { /* overlap */
hive_uedge old_val1;
- hive_uedge old_val0 = INV_SUBWORD(target[start_elem], start_bit, uedge_bits);
+ hive_uedge old_val0 = inv_subword(target[start_elem], start_bit, uedge_bits);
target[start_elem] = old_val0 | (src_subword << start_bit);
- old_val1 = INV_SUBWORD(target[start_elem + 1], 0,
+ old_val1 = inv_subword(target[start_elem + 1], 0,
subword_width + start_bit - uedge_bits);
target[start_elem + 1] = old_val1 | (src_subword >> (uedge_bits - start_bit));
} else {
- hive_uedge old_val = INV_SUBWORD(target[start_elem], start_bit,
+ hive_uedge old_val = inv_subword(target[start_elem], start_bit,
start_bit + subword_width);
target[start_elem] = old_val | (src_subword << start_bit);
--
2.34.1
