diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/dss/pll.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/pll.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/pll.c b/drivers/gpu/drm/omapdrm/dss/pll.c index 241a338ace29..4c8246a3ded9 100644 --- a/drivers/gpu/drm/omapdrm/dss/pll.c +++ b/drivers/gpu/drm/omapdrm/dss/pll.c @@ -222,6 +222,9 @@ bool dss_pll_calc_a(const struct dss_pll *pll, unsigned long clkin, n_stop = min((unsigned)(clkin / fint_hw_min), hw->n_max); n_inc = 1; + if (n_start > n_stop) + return false; + if (hw->errata_i886) { swap(n_start, n_stop); n_inc = -1; @@ -239,6 +242,9 @@ bool dss_pll_calc_a(const struct dss_pll *pll, unsigned long clkin, hw->m_max); m_inc = 1; + if (m_start > m_stop) + continue; + if (hw->errata_i886) { swap(m_start, m_stop); m_inc = -1; |