From patchwork Fri Jun 8 02:24:29 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Finn Thain X-Patchwork-Id: 926561 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4126985Drxz9rvt for ; Fri, 8 Jun 2018 12:41:00 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4126983ymhzF364 for ; Fri, 8 Jun 2018 12:41:00 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=telegraphics.com.au (client-ip=98.124.60.144; helo=kvm5.telegraphics.com.au; envelope-from=fthain@telegraphics.com.au; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=telegraphics.com.au Received: from kvm5.telegraphics.com.au (kvm5.telegraphics.com.au [98.124.60.144]) by lists.ozlabs.org (Postfix) with ESMTP id 4125p972nWzF33g for ; Fri, 8 Jun 2018 12:24:33 +1000 (AEST) Received: by kvm5.telegraphics.com.au (Postfix, from userid 502) id 4B4CE2A337; Thu, 7 Jun 2018 22:24:29 -0400 (EDT) To: Benjamin Herrenschmidt Message-Id: In-Reply-To: References: From: Finn Thain Subject: [PATCH v2 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware Date: Thu, 7 Jun 2018 22:24:29 -0400 (EDT) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michael Schmitz , Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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. Cc: Geert Uytterhoeven Signed-off-by: Finn Thain Reviewed-by: Michael Schmitz --- arch/m68k/mac/misc.c | 6 ++---- drivers/macintosh/via-pmu68k.c | 4 ---- include/uapi/linux/pmu.h | 1 - 3 files changed, 2 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..30f64d46f5db 100644 --- a/include/uapi/linux/pmu.h +++ b/include/uapi/linux/pmu.h @@ -93,7 +93,6 @@ 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_V2, /* 68K PMU, version 2 */ };