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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-26 15:12:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-26 15:12:47 -0800
commit5376071069ec8a7e6a8112beab16fc24f5139475 (patch)
tree81f90d6839b606d907a449d8d83b839ef829f7b0 /arch/arm/common/clkdev.c
parentcfb901bf84fe22eb86525e9fb20675b53fb0462a (diff)
parent24f11ec001920f1cfaeeed8e8b55725d900bbb56 (diff)
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Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (22 commits) [ARM] fix section-based ioremap [NET] am79c961a: fix spin_lock usage [ARM] omap: usb: thou shalt not provide empty release functions [ARM] omap: watchdog: allow OMAP watchdog driver on OMAP34xx platforms [ARM] 5369/1: omap mmc: Add new omap hsmmc controller for 2430 and 34xx, v3 [ARM] clkdev: fix clock matching [ARM] 5370/1: at91: fix rm9200 watchdog [ARM] 5368/1: arch/arm/mach-davinci/usb.c buildfix [ARM] 5365/1: s3cmci: Use new include path of dma.h [ARM] fix StrongARM-11x0 page copy implementation [ARM] omap: ensure OMAP drivers pass a struct device to clk_get() ARM: OMAP: Fix compile for h3 MMC ARM: OMAP: Remove unused platform devices, v3 ARM: OMAP: Fix ASoC by enabling writes to XCCR and RCCR McBSP registers, v3 ARM: OMAP: Fix OSK ASoC by registering I2C board info for tlvaic23 ARM: OMAP: remove duplicated #include's ARM: OMAP: Fix DMA CCR programming for request line > 63, v3 ARM: OMAP: Fix gpio.c compile on 15xx with CONFIG_DEBUGFS ARM: OMAP: Fix compile for beagle ARM: OMAP: Fix gpio by switching to generic gpio calls, v2 ...
Diffstat (limited to 'arch/arm/common/clkdev.c')
-rw-r--r--arch/arm/common/clkdev.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/arm/common/clkdev.c b/arch/arm/common/clkdev.c
index 17a17b49a45..1037bba1832 100644
--- a/arch/arm/common/clkdev.c
+++ b/arch/arm/common/clkdev.c
@@ -24,6 +24,15 @@
static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
+/*
+ * Find the correct struct clk for the device and connection ID.
+ * We do slightly fuzzy matching here:
+ * An entry with a NULL ID is assumed to be a wildcard.
+ * If an entry has a device ID, it must match
+ * If an entry has a connection ID, it must match
+ * Then we take the most specific entry - with the following
+ * order of precidence: dev+con > dev only > con only.
+ */
static struct clk *clk_find(const char *dev_id, const char *con_id)
{
struct clk_lookup *p;
@@ -31,13 +40,17 @@ static struct clk *clk_find(const char *dev_id, const char *con_id)
int match, best = 0;
list_for_each_entry(p, &clocks, node) {
- if ((p->dev_id && !dev_id) || (p->con_id && !con_id))
- continue;
match = 0;
- if (p->dev_id)
- match += 2 * (strcmp(p->dev_id, dev_id) == 0);
- if (p->con_id)
- match += 1 * (strcmp(p->con_id, con_id) == 0);
+ if (p->dev_id) {
+ if (!dev_id || strcmp(p->dev_id, dev_id))
+ continue;
+ match += 2;
+ }
+ if (p->con_id) {
+ if (!con_id || strcmp(p->con_id, con_id))
+ continue;
+ match += 1;
+ }
if (match == 0)
continue;