From bc3ac9f31642fb4697b313c2eb575c5286f35c2a Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Tue, 29 Jun 2010 11:35:12 +0530 Subject: davinci: edma: provide ability to detect insufficient CC info data This patch modifies the EDMA driver to expect the channel controller (CC) infomation passed on by the platform as a fixed size (EDMA_MAX_CC) array of pointers to structures. Doing so helps catch errors of the sort where the resource structure has information for more channel controllers than the number channel controller info structures defined. Such insufficient platform data would lead to illegal memory accesses. Signed-off-by: Sekhar Nori Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/dm644x.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'arch/arm/mach-davinci/dm644x.c') diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c index 7ad15208b84..40fec315c99 100644 --- a/arch/arm/mach-davinci/dm644x.c +++ b/arch/arm/mach-davinci/dm644x.c @@ -492,16 +492,18 @@ queue_priority_mapping[][2] = { {-1, -1}, }; -static struct edma_soc_info dm644x_edma_info[] = { - { - .n_channel = 64, - .n_region = 4, - .n_slot = 128, - .n_tc = 2, - .n_cc = 1, - .queue_tc_mapping = queue_tc_mapping, - .queue_priority_mapping = queue_priority_mapping, - }, +static struct edma_soc_info edma_cc0_info = { + .n_channel = 64, + .n_region = 4, + .n_slot = 128, + .n_tc = 2, + .n_cc = 1, + .queue_tc_mapping = queue_tc_mapping, + .queue_priority_mapping = queue_priority_mapping, +}; + +static struct edma_soc_info *dm644x_edma_info[EDMA_MAX_CC] = { + &edma_cc0_info, }; static struct resource edma_resources[] = { -- cgit v1.2.3