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| author | Paul Walmsley <paul@pwsan.com> | 2010-05-18 20:24:06 -0600 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2010-05-20 12:31:14 -0600 |
| commit | 59dd7224892142fe1d8505cf2c90bd732d730005 (patch) | |
| tree | 7538504b4823811eb8590c8d78c1c1804e025bb4 /arch/arm | |
| parent | 4788da268f83dedc58b79dc7b2f6072687f63a19 (diff) | |
| download | op-kernel-dev-59dd7224892142fe1d8505cf2c90bd732d730005.zip op-kernel-dev-59dd7224892142fe1d8505cf2c90bd732d730005.tar.gz | |
OMAP2 clock: fix recursive spinlock attempt when CONFIG_CPU_FREQ=y
The OMAP2 MPU virtual clock node code attempted to call clk_get_rate()
while the clockfw_lock spinlock was held. Fix by reading the sys_ck
rate directly.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c index e60ca4e..aef6291 100644 --- a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c +++ b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c @@ -68,16 +68,13 @@ long omap2_round_to_table_rate(struct clk *clk, unsigned long rate) { const struct prcm_config *ptr; long highest_rate; - long sys_ck_rate; - - sys_ck_rate = clk_get_rate(sclk); highest_rate = -EINVAL; for (ptr = rate_table; ptr->mpu_speed; ptr++) { if (!(ptr->flags & cpu_mask)) continue; - if (ptr->xtal_speed != sys_ck_rate) + if (ptr->xtal_speed != sclk->rate) continue; highest_rate = ptr->mpu_speed; @@ -96,15 +93,12 @@ int omap2_select_table_rate(struct clk *clk, unsigned long rate) const struct prcm_config *prcm; unsigned long found_speed = 0; unsigned long flags; - long sys_ck_rate; - - sys_ck_rate = clk_get_rate(sclk); for (prcm = rate_table; prcm->mpu_speed; prcm++) { if (!(prcm->flags & cpu_mask)) continue; - if (prcm->xtal_speed != sys_ck_rate) + if (prcm->xtal_speed != sclk->rate) continue; if (prcm->mpu_speed <= rate) { @@ -181,19 +175,16 @@ static struct cpufreq_frequency_table *freq_table; void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table) { const struct prcm_config *prcm; - long sys_ck_rate; int i = 0; int tbl_sz = 0; if (!cpu_is_omap24xx()) return; - sys_ck_rate = clk_get_rate(sclk); - for (prcm = rate_table; prcm->mpu_speed; prcm++) { if (!(prcm->flags & cpu_mask)) continue; - if (prcm->xtal_speed != sys_ck_rate) + if (prcm->xtal_speed != sclk->rate) continue; /* don't put bypass rates in table */ @@ -226,7 +217,7 @@ void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table) for (prcm = rate_table; prcm->mpu_speed; prcm++) { if (!(prcm->flags & cpu_mask)) continue; - if (prcm->xtal_speed != sys_ck_rate) + if (prcm->xtal_speed != sclk->rate) continue; /* don't put bypass rates in table */ |
