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authorPaul Walmsley <paul@pwsan.com>2010-05-19 06:24:06 +0400
committerPaul Walmsley <paul@pwsan.com>2010-05-20 22:31:14 +0400
commit59dd7224892142fe1d8505cf2c90bd732d730005 (patch)
tree7538504b4823811eb8590c8d78c1c1804e025bb4 /arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
parent4788da268f83dedc58b79dc7b2f6072687f63a19 (diff)
downloadlinux-59dd7224892142fe1d8505cf2c90bd732d730005.tar.xz
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/mach-omap2/clkt2xxx_virt_prcm_set.c')
-rw-r--r--arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c17
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 e60ca4e47bbd..aef62918aaf0 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 */