From 66b6cfacfc5aa2fda37b0d40cd54931ca5ef8cd7 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 26 Nov 2009 12:50:01 +0100 Subject: [PATCH] ALSA: pcm - fix page conversion on non-coherent MIPS arch The non-coherent MIPS arch doesn't give the correct address by a simple virt_to_page() for pages allocated via dma_alloc_coherent(). Original patch by Wu Zhangjin . [Ralf mentioned: "The origins of this patch go back far further. The oldest patch I could find which is a superset of this was written by Atsushi Nemoto and various incarnations of it have been sumitted to and reject by me a number of times through the years."] A proper check of the buffer allocation type was added to avoid the wrong conversion. Note that this doesn't fix perfectly: the pages should be marked with proper pgprot value. This will be done in a future implementation like the conversion to dma_mmap_coherent(). Acked-by: Ralf Baechle Signed-off-by: Takashi Iwai --- Reading git-format-patch failed