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| author | Girish S Ghongdemath <girishsg@ti.com> | 2011-07-15 16:28:13 -0500 |
|---|---|---|
| committer | Iliyan Malchev <malchev@google.com> | 2011-07-15 16:21:06 -0700 |
| commit | 843f129ce8ab1eac6a5052c2e99a1102e485d3bd (patch) | |
| tree | 3ea689e36b7743b6f69207b3eed032878fb1fcc7 | |
| parent | c1888c6edf253ebea5e5f528fddfba7312ddb786 (diff) | |
| download | kernel_samsung_tuna-843f129ce8ab1eac6a5052c2e99a1102e485d3bd.zip kernel_samsung_tuna-843f129ce8ab1eac6a5052c2e99a1102e485d3bd.tar.gz kernel_samsung_tuna-843f129ce8ab1eac6a5052c2e99a1102e485d3bd.tar.bz2 | |
OMAP4: DVFS: attempt floor before giving up scale
Make DVFS to try the next available frequency if the higher match
is not available. This will probably be the max available for the device.
If we cannot match any thing at all, fail. This modifies the behavior
of device scale to guarenteeing _atleast_ the frequency requested into
_if possible_, the frequency requested.
Change-Id: Id85382990d9717648a2466047bb966a089b72089
Signed-off-by: Girish S G <girishsg@ti.com>
| -rw-r--r-- | arch/arm/mach-omap2/dvfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/dvfs.c b/arch/arm/mach-omap2/dvfs.c index c17495a..754466c 100644 --- a/arch/arm/mach-omap2/dvfs.c +++ b/arch/arm/mach-omap2/dvfs.c @@ -853,6 +853,9 @@ int omap_device_scale(struct device *req_dev, struct device *target_dev, rcu_read_lock(); opp = opp_find_freq_ceil(target_dev, &freq); + /* If we dont find a max, try a floor at least */ + if (IS_ERR(opp)) + opp = opp_find_freq_floor(target_dev, &freq); if (IS_ERR(opp)) { rcu_read_unlock(); dev_err(target_dev, "%s: Unable to find OPP for freq%ld\n", |