[PATCH 4.18 090/158] macintosh/via-pmu: Add missing mmio accessors

From: Greg Kroah-Hartman
Date: Mon Sep 17 2018 - 19:11:30 EST


4.18-stable review patch. If anyone has any objections, please let me know.

------------------

From: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>

[ Upstream commit 576d5290d678a651b9f36050fc1717e0573aca13 ]

Add missing in_8() accessors to init_pmu() and pmu_sr_intr().

This fixes several sparse warnings:
drivers/macintosh/via-pmu.c:536:29: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:537:33: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1455:17: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1456:69: warning: dereference of noderef expression

Tested-by: Stan Johnson <userm57@xxxxxxxxx>
Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/macintosh/via-pmu.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -534,8 +534,9 @@ init_pmu(void)
int timeout;
struct adb_request req;

- out_8(&via[B], via[B] | TREQ); /* negate TREQ */
- out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
+ /* Negate TREQ. Set TACK to input and TREQ to output. */
+ out_8(&via[B], in_8(&via[B]) | TREQ);
+ out_8(&via[DIRB], (in_8(&via[DIRB]) | TREQ) & ~TACK);

pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
timeout = 100000;
@@ -1418,8 +1419,8 @@ pmu_sr_intr(void)
struct adb_request *req;
int bite = 0;

- if (via[B] & TREQ) {
- printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
+ 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;
}