From: Santiago Leon Date: Tue, 4 Sep 2012 14:41:37 +0000 (+0000) Subject: ibmveth: Fix alignment of rx queue bug X-Git-Tag: v3.2.30~24 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1170e5b66595a73f7e8bb0b62e433669939c0eea;p=pandora-kernel.git ibmveth: Fix alignment of rx queue bug commit d90c92fee89ccd75ef2646f3bde0b4c0450666c3 upstream. This patch fixes a bug found by Nish Aravamudan (https://lkml.org/lkml/2012/5/15/220) where the driver is not following the spec (it is not aligning the rx buffer on a 16-byte boundary) and the hypervisor aborts the registration, making the device unusable. The fix follows BenH's recommendation (https://lkml.org/lkml/2012/7/20/461) to replace the kmalloc+map for a single call to dma_alloc_coherent() because that function always aligns to a 16-byte boundary. The stable trees will run into this bug whenever the rx buffer kmalloc call returns something not aligned on a 16-byte boundary. Signed-off-by: Santiago Leon Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed