ARM: 5975/1: AT91 slow-clock suspend: don't wait when turning PLLs off

From: Julien Langer <julien.langer@gmail.com>

AT91: when turning off the PLLs during suspend, don't wait for the lock
flag to be set. Previously the code would always run into the loop
limitation of 1000 iterations because the flag is never set when turning
the PLLs off.

Comments from Anders Larsen:

 (in http://marc.info/?l=linux-kernel&m=127058929724193&w=2)

Signed-off-by: Julien Langer <julien.langer@gmail.com>
Signed-off-by: Anders Larsen <al@alarsen.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S
index 9fcbd6c..9c5b48e 100644 (file)
--- a/arch/arm/mach-at91/pm_slowclock.S
+++ b/arch/arm/mach-at91/pm_slowclock.S
@@ -175,8 +175,6 @@ ENTRY(at91_slow_clock)
        orr     r3, r3, #(1 << 29)              /* bit 29 always set */
        str     r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)]
 
-       wait_pllalock
-
        /* Save PLLB setting and disable it */
        ldr     r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)]
        str     r3, .saved_pllbr
@@ -184,8 +182,6 @@ ENTRY(at91_slow_clock)
        mov     r3, #AT91_PMC_PLLCOUNT
        str     r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)]
 
-       wait_pllblock
-
        /* Turn off the main oscillator */
        ldr     r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)]
        bic     r3, r3, #AT91_PMC_MOSCEN