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k210: fix k210_pll_calc_config()

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The k210 driver is selected by sandbox_defconfig.
Building the sandbox on 32bit systems fails with:

test/dm/k210_pll.c: In function ‘dm_test_k210_pll_calc_config’:
include/linux/bitops.h:11:38: warning:
left shift count >= width of type [-Wshift-count-overflow]
   11 | #define BIT(nr)         (1UL << (nr))
      |                              ^~
test/dm/k210_pll.c:36:54: note: in expansion of macro ‘BIT’
   36 |                         error = abs((error - BIT(32))) >> 16;
      |                                              ^~~

Use the BIT_ULL() macro to create a u64 value.
Replace abs() by abs64() to get correct results on 32bit system
Apply the same for the unit test.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
This commit is contained in:
Heinrich Schuchardt
2022-10-16 18:12:32 +02:00
committed by Leo Yu-Chi Liang
parent e67f34f778
commit e77ef0bb74
2 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/clk/clk_k210.c
View File

@@ -846,7 +846,7 @@ again:
error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio, r * od); error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio, r * od);
/* The lower 16 bits are spurious */ /* The lower 16 bits are spurious */
error = abs((error - BIT(32))) >> 16; error = abs64((error - BIT_ULL(32))) >> 16;
if (error < best_error) { if (error < best_error) {
best->r = r; best->r = r;

2
test/dm/k210_pll.c
View File

@@ -33,7 +33,7 @@ static int dm_test_k210_pll_calc_config(u32 rate, u32 rate_in,
error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio, error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio,
r * od); r * od);
/* The lower 16 bits are spurious */ /* The lower 16 bits are spurious */
error = abs((error - BIT(32))) >> 16; error = abs64((error - BIT_ULL(32))) >> 16;
if (error < best_error) { if (error < best_error) {
best->r = r; best->r = r;
best->f = f; best->f = f;