diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2018-07-02 04:21:18 -0400 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-07-31 19:56:39 +1000 |
| commit | 7ad94699a94b388780e40158e6954a22b68e9d20 (patch) | |
| tree | bdb6d223ab8fd49464ffe2c3cd8389d210de4e4d /drivers | |
| parent | 576d5290d678a651b9f36050fc1717e0573aca13 (diff) | |
| download | linux-7ad94699a94b388780e40158e6954a22b68e9d20.tar.gz | |
macintosh/via-pmu: Don't clear shift register interrupt flag twice
The shift register interrupt flag gets cleared in via_pmu_interrupt() and once again in pmu_sr_intr(). Fix this theoretical race condition. Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/macintosh/via-pmu.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index ba41220f618e..c313ddfdb17a 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -1421,7 +1421,6 @@ pmu_sr_intr(void) if (in_8(&via[B]) & TREQ) { printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via[B])); - out_8(&via[IFR], SR_INT); return NULL; } /* The ack may not yet be low when we get the interrupt */ |