diff options
| author | Finn Thain | 2018-07-02 04:21:19 -0400 |
|---|---|---|
| committer | Michael Ellerman | 2018-07-31 19:56:42 +1000 |
| commit | 54c990775f78113a708f24e15877f6b7bd9a1277 (patch) | |
| tree | 792988c58db7653ee6dd8b84ff1eee67903df36a | |
| parent | c2f028b6a0b241d1b18d8d0ebcb13d21659dcfe7 (diff) | |
macintosh/via-pmu68k: Don't load driver on unsupported hardware
Don't load the via-pmu68k driver on early PowerBooks. The M50753 PMU
device found in those models was never supported by this driver.
Attempting to load the driver usually causes a boot hang.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/m68k/mac/misc.c | 6 | ||||
| -rw-r--r-- | drivers/macintosh/via-pmu68k.c | 4 | ||||
| -rw-r--r-- | include/uapi/linux/pmu.h | 2 |
3 files changed, 3 insertions, 9 deletions
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c index c68054361615..7ccb799eeb57 100644 --- a/arch/m68k/mac/misc.c +++ b/arch/m68k/mac/misc.c @@ -478,8 +478,7 @@ void mac_poweroff(void) cuda_shutdown(); #endif #ifdef CONFIG_ADB_PMU68K - } else if (macintosh_config->adb_type == MAC_ADB_PB1 - || macintosh_config->adb_type == MAC_ADB_PB2) { + } else if (macintosh_config->adb_type == MAC_ADB_PB2) { pmu_shutdown(); #endif } @@ -520,8 +519,7 @@ void mac_reset(void) cuda_restart(); #endif #ifdef CONFIG_ADB_PMU68K - } else if (macintosh_config->adb_type == MAC_ADB_PB1 - || macintosh_config->adb_type == MAC_ADB_PB2) { + } else if (macintosh_config->adb_type == MAC_ADB_PB2) { pmu_restart(); #endif } else if (CPU_IS_030) { diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c index d545ed45e482..bec8e1837d7d 100644 --- a/drivers/macintosh/via-pmu68k.c +++ b/drivers/macintosh/via-pmu68k.c @@ -175,9 +175,6 @@ static s8 pmu_data_len[256][2] = { int __init find_via_pmu(void) { switch (macintosh_config->adb_type) { - case MAC_ADB_PB1: - pmu_kind = PMU_68K_V1; - break; case MAC_ADB_PB2: pmu_kind = PMU_68K_V2; break; @@ -785,7 +782,6 @@ pmu_enable_backlight(int on) /* first call: get current backlight value */ if (backlight_level < 0) { switch(pmu_kind) { - case PMU_68K_V1: case PMU_68K_V2: pmu_request(&req, NULL, 3, PMU_READ_NVRAM, 0x14, 0xe); while (!req.complete) diff --git a/include/uapi/linux/pmu.h b/include/uapi/linux/pmu.h index 89cb1acea93a..e128f609281a 100644 --- a/include/uapi/linux/pmu.h +++ b/include/uapi/linux/pmu.h @@ -93,7 +93,7 @@ enum { PMU_HEATHROW_BASED, /* PowerBook G3 series */ PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */ PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */ - PMU_68K_V1, /* 68K PMU, version 1 */ + PMU_68K_V1, /* Unused/deprecated */ PMU_68K_V2, /* 68K PMU, version 2 */ }; |