From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3365D2C0099 for ; Wed, 22 Jan 2014 10:02:56 +1100 (EST) Received: from /spool/local by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 21 Jan 2014 16:02:53 -0700 Received: from b03cxnp07029.gho.boulder.ibm.com (b03cxnp07029.gho.boulder.ibm.com [9.17.130.16]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id 3C14019D8042 for ; Tue, 21 Jan 2014 16:02:42 -0700 (MST) Received: from d03av04.boulder.ibm.com (d03av04.boulder.ibm.com [9.17.195.170]) by b03cxnp07029.gho.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s0LL0QwF4260340 for ; Tue, 21 Jan 2014 22:00:26 +0100 Received: from d03av04.boulder.ibm.com (loopback [127.0.0.1]) by d03av04.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s0LN2opk012232 for ; Tue, 21 Jan 2014 16:02:51 -0700 From: Tyrel Datwyler To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/3] powerpc/pseries: Device tree should only be updated once after suspend/migrate Date: Tue, 21 Jan 2014 17:55:47 -0500 Message-Id: <1390344949-3983-2-git-send-email-tyreld@linux.vnet.ibm.com> In-Reply-To: <1390344949-3983-1-git-send-email-tyreld@linux.vnet.ibm.com> References: <1390344949-3983-1-git-send-email-tyreld@linux.vnet.ibm.com> Cc: nfont@linux.vnet.ibm.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The current code makes rtas calls for update-nodes, activate-firmware and then update-nodes again. The FW provides the same data for both update-nodes calls. As a result a proc entry exists error is reported for the second update while adding device nodes. This patch makes a single rtas call for update-nodes after activating the FW. It also add rtas_busy delay for the activate-firmware rtas call. Signed-off-by: Haren Myneni Signed-off-by: Tyrel Datwyler --- arch/powerpc/platforms/pseries/mobility.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index cde4e0a..bde7eba 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -290,13 +290,6 @@ void post_mobility_fixup(void) int rc; int activate_fw_token; - rc = pseries_devicetree_update(MIGRATION_SCOPE); - if (rc) { - printk(KERN_ERR "Initial post-mobility device tree update " - "failed: %d\n", rc); - return; - } - activate_fw_token = rtas_token("ibm,activate-firmware"); if (activate_fw_token == RTAS_UNKNOWN_SERVICE) { printk(KERN_ERR "Could not make post-mobility " @@ -304,16 +297,17 @@ void post_mobility_fixup(void) return; } - rc = rtas_call(activate_fw_token, 0, 1, NULL); - if (!rc) { - rc = pseries_devicetree_update(MIGRATION_SCOPE); - if (rc) - printk(KERN_ERR "Secondary post-mobility device tree " - "update failed: %d\n", rc); - } else { + do { + rc = rtas_call(activate_fw_token, 0, 1, NULL); + } while (rtas_busy_delay(rc)); + + if (rc) printk(KERN_ERR "Post-mobility activate-fw failed: %d\n", rc); - return; - } + + rc = pseries_devicetree_update(MIGRATION_SCOPE); + if (rc) + printk(KERN_ERR "Post-mobility device tree update " + "failed: %d\n", rc); return; } -- 1.7.12.4