diff options
| author | Jaehoon Chung <jh80.chung@samsung.com> | 2015-04-10 20:11:28 +0900 |
|---|---|---|
| committer | Seung-Woo Kim <sw0312.kim@samsung.com> | 2016-12-14 13:42:49 +0900 |
| commit | d73ab6ab55f1cc13c17c1bf0965f13589766ca39 (patch) | |
| tree | 7a34559afa28eccf0ab605138318e5cc036be910 /drivers/mmc/host | |
| parent | aa31eccc2b24f7513bf984fceeecfd5111ad2e10 (diff) | |
local / mmc: dw_mmc: exynos: fix the bit rotation operation for sampling clock
This used the workaround code instead of ror8().
With ror8,
__c = ror8(0x7f, 1) -> __c is 0x3f. (Expected value is 0xbf)
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/dw_mmc-exynos.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 9106da83b018..db9a08d339b8 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -454,11 +454,11 @@ static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host) static s8 dw_mci_exynos_get_best_clksmpl(u8 candiates) { const u8 iter = 8; - u8 __c; + u16 __c; s8 i, loc = -1; for (i = 0; i < iter; i++) { - __c = ror8(candiates, i); + __c = (candiates >> i) | (candiates << (iter - i)); if ((__c & 0xc7) == 0xc7) { loc = i; goto out; @@ -466,7 +466,7 @@ static s8 dw_mci_exynos_get_best_clksmpl(u8 candiates) } for (i = 0; i < iter; i++) { - __c = ror8(candiates, i); + __c = (candiates >> i) | (candiates << (iter - i)); if ((__c & 0x83) == 0x83) { loc = i; goto out; |