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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-02-17 11:35:15 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-02-17 11:41:59 +0100 |
| commit | a0dd005d1d9f4c3beab52086f3844ef9342d1e67 (patch) | |
| tree | df87f09d8fc0a6cba0a2e341e8835767da1a714e /arch/arm | |
| parent | Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
| download | linux-a0dd005d1d9f4c3beab52086f3844ef9342d1e67.tar.xz linux-a0dd005d1d9f4c3beab52086f3844ef9342d1e67.zip | |
[ARM] pxa: fix clock lookup to find specific device clocks
Ensure that the clock lookup always finds an entry for a specific
device and ID before it falls back to finding just by ID. This
fixes a problem reported by Holger Schurig where the BTUART was
assigned the wrong clock.
Tested-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-pxa/clock.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c index 83ef5ecaf432..df5ae2710ab1 100644 --- a/arch/arm/mach-pxa/clock.c +++ b/arch/arm/mach-pxa/clock.c @@ -23,18 +23,27 @@ static LIST_HEAD(clocks); static DEFINE_MUTEX(clocks_mutex); static DEFINE_SPINLOCK(clocks_lock); +static struct clk *clk_lookup(struct device *dev, const char *id) +{ + struct clk *p; + + list_for_each_entry(p, &clocks, node) + if (strcmp(id, p->name) == 0 && p->dev == dev) + return p; + + return NULL; +} + struct clk *clk_get(struct device *dev, const char *id) { struct clk *p, *clk = ERR_PTR(-ENOENT); mutex_lock(&clocks_mutex); - list_for_each_entry(p, &clocks, node) { - if (strcmp(id, p->name) == 0 && - (p->dev == NULL || p->dev == dev)) { - clk = p; - break; - } - } + p = clk_lookup(dev, id); + if (!p) + p = clk_lookup(NULL, id); + if (p) + clk = p; mutex_unlock(&clocks_mutex); return clk; |