diff options
| author | Mandar Potdar <mpotdar@nvidia.com> | 2011-12-06 16:25:07 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-08 18:04:00 +0530 |
| commit | 8b0fbf761949f6a5b84affa1e1974b5595b5c176 (patch) | |
| tree | 0bad049d001c7e7ebfe8c99f08efeeb0db146ccb /drivers/media/video/tegra/nvavp/nvavp_dev.c | |
| parent | a918cba66ec237c1018295cdd6669575b9314fcb (diff) | |
nvavp: Enable clock before clk_set_rate/clk_get_rate
Explicitly enable clock before doing clk_set_rate() or
clk_get_rate(). It is possible that the clock was disabled
due to idle notification from AVP.
bug: 904969
bug: 876317
Signed-off-by: Mandar Potdar <mpotdar@nvidia.com>
Change-Id: I100589d4f45244a9db3c05954ff9c9dabb62c0ed
Reviewed-on: http://git-master/r/68438
Reviewed-by: Mohan Nimaje <mnimaje@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Mandar Potdar <mpotdar@nvidia.com>
Reviewed-by: Jihoon Bang <jbang@nvidia.com>
Reviewed-by: Dan Willemsen <dwillemsen@nvidia.com>
Diffstat (limited to 'drivers/media/video/tegra/nvavp/nvavp_dev.c')
| -rw-r--r-- | drivers/media/video/tegra/nvavp/nvavp_dev.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/video/tegra/nvavp/nvavp_dev.c b/drivers/media/video/tegra/nvavp/nvavp_dev.c index 91443faa8b34..03107164d114 100644 --- a/drivers/media/video/tegra/nvavp/nvavp_dev.c +++ b/drivers/media/video/tegra/nvavp/nvavp_dev.c @@ -797,10 +797,11 @@ static int nvavp_set_clock_ioctl(struct file *filp, unsigned int cmd, if (IS_ERR_OR_NULL(c)) return -EINVAL; + clk_enable(c); clk_set_rate(c, config.rate); config.rate = clk_get_rate(c); - + clk_disable(c); if (copy_to_user((void __user *)arg, &config, sizeof(struct nvavp_clock_args))) return -EFAULT; @@ -822,7 +823,9 @@ static int nvavp_get_clock_ioctl(struct file *filp, unsigned int cmd, if (IS_ERR_OR_NULL(c)) return -EINVAL; + clk_enable(c); config.rate = clk_get_rate(c); + clk_disable(c); if (copy_to_user((void __user *)arg, &config, sizeof(struct nvavp_clock_args))) return -EFAULT; |