mirror of https://gitee.com/openkylin/linux.git
OMAP1 clock: fix for "BUG: spinlock lockup on CPU#0"
Commit 52650505fb
caused clock initialization
to fail on OMAP1 with "BUG: spinlock lockup on CPU#0" -- this is because
omap1_select_table_rate() and omap1_round_to_table_rate() call clk_get_rate()
with the clockfw spinlock held. Fix by accessing the rate directly from
the internal clock framework functions.
Thanks to Tony Lindgren <tony@atomide.com> for reporting and testing the fix.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
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@ -214,8 +214,8 @@ int omap1_select_table_rate(struct clk *clk, unsigned long rate)
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struct mpu_rate * ptr;
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unsigned long dpll1_rate, ref_rate;
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dpll1_rate = clk_get_rate(ck_dpll1_p);
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ref_rate = clk_get_rate(ck_ref_p);
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dpll1_rate = ck_dpll1_p->rate;
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ref_rate = ck_ref_p->rate;
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for (ptr = omap1_rate_table; ptr->rate; ptr++) {
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if (ptr->xtal != ref_rate)
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@ -306,7 +306,7 @@ long omap1_round_to_table_rate(struct clk *clk, unsigned long rate)
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long highest_rate;
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unsigned long ref_rate;
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ref_rate = clk_get_rate(ck_ref_p);
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ref_rate = ck_ref_p->rate;
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highest_rate = -EINVAL;
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