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| author | James Morris <james.l.morris@oracle.com> | 2012-05-04 12:46:40 +1000 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2012-05-04 12:46:40 +1000 |
| commit | 898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3 (patch) | |
| tree | e6e666085abe674dbf6292555961fe0a0f2e2d2f /arch/powerpc/platforms/powermac/low_i2c.c | |
| parent | 08162e6a23d476544adfe1164afe9ea8b34ab859 (diff) | |
| parent | 69964ea4c7b68c9399f7977aa5b9aa6539a6a98a (diff) | |
| download | olio-linux-3.10-898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3.tar.xz olio-linux-3.10-898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3.zip | |
Merge tag 'v3.4-rc5' into next
Linux 3.4-rc5
Merge to pull in prerequisite change for Smack:
86812bb0de1a3758dc6c7aa01a763158a7c0638a
Requested by Casey.
Diffstat (limited to 'arch/powerpc/platforms/powermac/low_i2c.c')
| -rw-r--r-- | arch/powerpc/platforms/powermac/low_i2c.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c index 996c5ff7824..03685a329d7 100644 --- a/arch/powerpc/platforms/powermac/low_i2c.c +++ b/arch/powerpc/platforms/powermac/low_i2c.c @@ -366,11 +366,20 @@ static void kw_i2c_timeout(unsigned long data) unsigned long flags; spin_lock_irqsave(&host->lock, flags); + + /* + * If the timer is pending, that means we raced with the + * irq, in which case we just return + */ + if (timer_pending(&host->timeout_timer)) + goto skip; + kw_i2c_handle_interrupt(host, kw_read_reg(reg_isr)); if (host->state != state_idle) { host->timeout_timer.expires = jiffies + KW_POLL_TIMEOUT; add_timer(&host->timeout_timer); } + skip: spin_unlock_irqrestore(&host->lock, flags); } |