From mboxrd@z Thu Jan 1 00:00:00 1970 From: nicolas.ferre@atmel.com (Nicolas Ferre) Date: Thu, 9 Dec 2010 14:15:14 +0100 Subject: [RFC PATCH] scatterlist: Initialize the dma_address field with invalid dma address Message-ID: <1291900514-7290-1-git-send-email-nicolas.ferre@atmel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Initialize the the dma_address field so that it will be possible to test its value while using scatterlists. This field will be compatible with testing by dma_mapping_error(). Signed-off-by: Nicolas Ferre --- Hi, I wonder why this field is not initialized in the scatterlist: is it intentional and is there a different way to check if dma_address is a valid field? lib/scatterlist.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/lib/scatterlist.c b/lib/scatterlist.c index 4ceb05d..ca69409 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -85,6 +85,7 @@ EXPORT_SYMBOL(sg_last); void sg_init_table(struct scatterlist *sgl, unsigned int nents) { memset(sgl, 0, sizeof(*sgl) * nents); + sgl->dma_address = (~(dma_addr_t)0); #ifdef CONFIG_DEBUG_SG { unsigned int i; -- 1.7.3