From mboxrd@z Thu Jan 1 00:00:00 1970 From: benh@kernel.crashing.org (Benjamin Herrenschmidt) Date: Mon, 02 Apr 2012 14:21:57 +1000 Subject: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead In-Reply-To: References: <1329383368-12122-1-git-send-email-grant.likely@secretlab.ca> <1329383368-12122-7-git-send-email-grant.likely@secretlab.ca> Message-ID: <1333340517.30734.42.camel@pasglop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sun, 2012-04-01 at 23:27 +0200, Andreas Schwab wrote: > Grant Likely writes: > > > This patch drops the powerpc-specific irq_map table and replaces it with > > directly using the irq_alloc_desc()/irq_free_desc() interfaces for allocating > > and freeing irq_desc structures. > > This breaks irqs on PowerMac G5. I see lost irq errors from the sata > driver. > > Note that the breakage only started after the series was merged into > mainline. But when transplanted upon the parent of the merge this is > the commit that was blamed by bisect. So something changed between > v3.3-rc3 and the merge of this series that broke it. can you tell me more ? (What machine precisely, what .config etc...) ? I tested here on two G5's: - PowerMac7,3 aka Dual G5 AGP. This ones has U3 + K2 and uses cascaded MPICs - PowerMac11,2 aka Quad G5. This one has U4 + K2 and uses a single MPIC in the northbridge And both appear to work fine with today upstream (basically -rc1). Cheers, Ben.