The patch titled
Char: ds1286, eliminate busy waiting
has been added to the -mm tree. Its filename is
char-ds1286-eliminate-busy-waiting.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: Char: ds1286, eliminate busy waiting
From: Jiri Slaby <jirislaby@xxxxxxxxx>
ds1286_get_time(); is not called from atomic context, sleep for 20 ms is
better choice than a (home-made) busy waiting for such a situation.
Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/ds1286.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff -puN drivers/char/ds1286.c~char-ds1286-eliminate-busy-waiting drivers/char/ds1286.c
--- a/drivers/char/ds1286.c~char-ds1286-eliminate-busy-waiting
+++ a/drivers/char/ds1286.c
@@ -443,7 +443,6 @@ static void ds1286_get_time(struct rtc_t
{
unsigned char save_control;
unsigned long flags;
- unsigned long uip_watchdog = jiffies;
/*
* read RTC once any update in progress is done. The update
@@ -456,8 +455,7 @@ static void ds1286_get_time(struct rtc_t
*/
if (ds1286_is_updating() != 0)
- while (time_before(jiffies, uip_watchdog + 2*HZ/100))
- barrier();
+ msleep(20);
/*
* Only the values that we read from the RTC are set. We leave
_
Patches currently in -mm which might be from jirislaby@xxxxxxxxx are
origin.patch
add-a-warn-macro-this-is-warn_on-printk-arguments.patch
ip2-push-bkl-down-for-the-firmware-interface.patch
rio-push-down-the-bkl-into-the-firmware-ioctl-handler.patch
sx-push-bkl-down-into-the-firmware-ioctl-handler.patch
ppdev-wrap-ioctl-handler-in-driver-and-push-lock-down.patch
dsp56k-bkl-pushdown.patch
char-mxser-ioctl-cleanup.patch
char-mxser-globals-cleanup.patch
char-mxser-update-documentation.patch
char-mxser-prints-cleanup.patch
char-mxser-remove-predefined-isa-support.patch
char-mxser-various-cleanups.patch
drivers-misc-phantom-note-pci.patch
ath5k-fix-memory-corruption.patch
ath5k-kill-tasklets-on-shutdown.patch
ath5k-flush-work.patch
ath5k-fix-dma-operation.patch
ath5k-suspend-resume-fixes.patch
ath5k-fix-beacon-update-deadlock.patch
ath5k-mask-out-unneeded-interrupts.patch
ath5k-unify-resets.patch
mac80211-tx-use-dev_kfree_skb_any-for-beacon_get.patch
mac80211-return-correct-error-return-from-ieee80211_wep_init.patch
ip2-fix-iielliscleanup-as-it-is-static-but-not-always-used.patch
char-merge-ip2main-and-ip2base.patch
char-ip2-cleanup-globals.patch
char-ip2-fix-sparse-warnings.patch
char-ip2-init-deinit-cleanup.patch
ip2-avoid-add_timer-with-pending-timer.patch
char-ds1286-eliminate-busy-waiting.patch
reiser4.patch
shrink_slab-handle-bad-shrinkers.patch
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