From 28591dfdd96c6289aebbf12d8eb4e5dc5ddbde97 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Apr 2015 18:39:31 +0300 Subject: [PATCH] dmaengine: sa11x0: report slave capabilities to upper layers Fix the following warning by initializing necessary fields in the dma_device structure. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:863 dma_async_device_register+0x2b4/0x4f0() this driver doesn't support generic slave capabilities reporting Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc5+ #10 Hardware name: Sharp-Collie [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (warn_slowpath_common+0x74/0xac) [] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40) [] (warn_slowpath_fmt) from [] (dma_async_device_register+0x2b4/0x4f0) [] (dma_async_device_register) from [] (sa11x0_dma_probe+0x21c/0x358) [] (sa11x0_dma_probe) from [] (platform_drv_probe+0x30/0x94) [] (platform_drv_probe) from [] (driver_probe_device+0x84/0x234) [] (driver_probe_device) from [] (__driver_attach+0x98/0x9c) [] (__driver_attach) from [] (bus_for_each_dev+0x74/0xa4) [] (bus_for_each_dev) from [] (bus_add_driver+0x13c/0x1e8) [] (bus_add_driver) from [] (driver_register+0x78/0xf8) [] (driver_register) from [] (do_one_initcall+0x84/0x1f4) [] (do_one_initcall) from [] (kernel_init_freeable+0xf8/0x1b4) [] (kernel_init_freeable) from [] (kernel_init+0x8/0xf0) [] (kernel_init) from [] (ret_from_fork+0x14/0x2c) ---[ end trace e188b8fe0e782e75 ]--- Signed-off-by: Dmitry Eremin-Solenikov Acked-by: Russell King Signed-off-by: Vinod Koul --- drivers/dma/sa11x0-dma.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c index dafe13faa940..43db255050d2 100644 --- a/drivers/dma/sa11x0-dma.c +++ b/drivers/dma/sa11x0-dma.c @@ -942,6 +942,12 @@ static int sa11x0_dma_probe(struct platform_device *pdev) dma_cap_set(DMA_CYCLIC, d->slave.cap_mask); d->slave.device_prep_slave_sg = sa11x0_dma_prep_slave_sg; d->slave.device_prep_dma_cyclic = sa11x0_dma_prep_dma_cyclic; + d->slave.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); + d->slave.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; + d->slave.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES); + d->slave.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES); ret = sa11x0_dma_init_dmadev(&d->slave, &pdev->dev); if (ret) { dev_warn(d->slave.dev, "failed to register slave async device: %d\n", -- 2.39.2