1 files changed, 41 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/linux-rp-2.6.24/pxa27x-resume.patch b/meta/recipes-kernel/linux/linux-rp-2.6.24/pxa27x-resume.patch
new file mode 100644
index 0000000000..6447a0b104
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-rp-2.6.24/pxa27x-resume.patch
@@ -0,0 +1,41 @@
+List:       linux-arm-kernel
+Subject:    [PATCH] Fix PXA27x resume
+From:       Russell King - ARM Linux <linux@arm.linux.org.uk>
+Date:       2008-01-21 13:53:31
+Message-ID: 20080121135331.GC30149@flint.arm.linux.org.uk
+[Download message RAW]
+
+When PXA27x wakes up, tick_resume_oneshot() tries to set a timer
+interrupt to occur immediately.  Since PXA27x requires at least
+MIN_OSCR_DELTA, this causes us to flag an error.
+
+tick_program_event() then increments the next event time by
+min_delta_ns.  However, by the time we get back to programming
+the next event, the OSCR has incremented such that we fail again.
+We repeatedly retry, but the OSCR is too fast for us - we never
+catch up, so we never break out of the loop - resulting in us
+never apparantly resuming.
+
+Fix this by doubling min_delta_ns.
+
+Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
+
+diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
+index ac0bbad..7b7c017 100644
+--- a/arch/arm/mach-pxa/time.c
++++ b/arch/arm/mach-pxa/time.c
+@@ -169,7 +169,7 @@ static void __init pxa_timer_init(void)
+        ckevt_pxa_osmr0.max_delta_ns =
+                clockevent_delta2ns(0x7fffffff, &ckevt_pxa_osmr0);
+        ckevt_pxa_osmr0.min_delta_ns =
+-               clockevent_delta2ns(MIN_OSCR_DELTA, &ckevt_pxa_osmr0) + 1;
++               clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_pxa_osmr0) + 1;
+ 
+        cksrc_pxa_oscr0.mult =
+                clocksource_hz2mult(clock_tick_rate, cksrc_pxa_oscr0.shift);
+
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