diff options
| author | Jeffy Chen <jeffy.chen@rock-chips.com> | 2017-08-07 15:40:20 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-08-07 18:44:13 +0300 |
| commit | d38c4ae194bb8a3d8cf7d95378c5b2799cdd0a3b (patch) | |
| tree | 995344d86065d6999f2eebf641d42692b47be34f /drivers/spi | |
| parent | 6a06e895b262621a81b3b08126b4bc5e1b8eef05 (diff) | |
| download | linux-d38c4ae194bb8a3d8cf7d95378c5b2799cdd0a3b.tar.xz | |
spi: rockchip: Fix clock handling in suspend/resume
The runtime suspend callback might be called by pm domain framework at
suspend_noirq stage. It would try to disable the clocks which already
been disabled by rockchip_spi_suspend.
Call pm_runtime_force_suspend/pm_runtime_force_resume when
suspend/resume to avoid that.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-rockchip.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index a75fd9bb76de..34f6440a5255 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -846,10 +846,9 @@ static int rockchip_spi_suspend(struct device *dev) if (ret < 0) return ret; - if (!pm_runtime_suspended(dev)) { - clk_disable_unprepare(rs->spiclk); - clk_disable_unprepare(rs->apb_pclk); - } + ret = pm_runtime_force_suspend(dev); + if (ret < 0) + return ret; pinctrl_pm_select_sleep_state(dev); @@ -864,17 +863,9 @@ static int rockchip_spi_resume(struct device *dev) pinctrl_pm_select_default_state(dev); - if (!pm_runtime_suspended(dev)) { - ret = clk_prepare_enable(rs->apb_pclk); - if (ret < 0) - return ret; - - ret = clk_prepare_enable(rs->spiclk); - if (ret < 0) { - clk_disable_unprepare(rs->apb_pclk); - return ret; - } - } + ret = pm_runtime_force_resume(dev); + if (ret < 0) + return ret; ret = spi_master_resume(rs->master); if (ret < 0) { |