[PATCH 01/14] DMAENGINE: ste_dma40: config checks
in [Kernel]
|
Prev: [PATCH 12/14] DMAENGINE: ste_dma40: removed non-used variable from struct
Next: [PATCH 03/14] DMAENGINE: ste_dma40: No need reading, masking and setting a set register
From: Linus Walleij on 9 Aug 2010 08:10 Added various configuration checks. Signed-off-by: Jonas Aaberg <jonas.aberg(a)stericsson.com> Signed-off-by: Linus Walleij <linus.walleij(a)stericsson.com> --- arch/arm/plat-nomadik/include/plat/ste_dma40.h | 2 +- drivers/dma/ste_dma40.c | 29 ++++++++++++++++++++++- 2 files changed, 28 insertions(+), 3 deletions(-) diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h index 5fbde4b..ee5d8b2 100644 --- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h +++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h @@ -98,7 +98,7 @@ struct stedma40_half_channel_info { }; enum stedma40_xfer_dir { - STEDMA40_MEM_TO_MEM, + STEDMA40_MEM_TO_MEM = 1, STEDMA40_MEM_TO_PERIPH, STEDMA40_PERIPH_TO_MEM, STEDMA40_PERIPH_TO_PERIPH diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 17e2600..df2e1a3 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -981,14 +981,39 @@ static int d40_validate_conf(struct d40_chan *d40c, bool is_log = (conf->channel_type & STEDMA40_CHANNEL_IN_OPER_MODE) == STEDMA40_CHANNEL_IN_LOG_MODE; - if (d40c->dma_cfg.dir == STEDMA40_MEM_TO_PERIPH && + if (!conf->dir) { + dev_err(&d40c->chan.dev->device, "[%s] Invalid direction.\n", + __func__); + res = -EINVAL; + } + + if (conf->dst_dev_type != STEDMA40_DEV_DST_MEMORY && + d40c->base->plat_data->dev_tx[conf->dst_dev_type] == 0 && + d40c->runtime_addr == 0) { + + dev_err(&d40c->chan.dev->device, + "[%s] Invalid TX channel address (%d)\n", + __func__, conf->dst_dev_type); + res = -EINVAL; + } + + if (conf->src_dev_type != STEDMA40_DEV_SRC_MEMORY && + d40c->base->plat_data->dev_rx[conf->src_dev_type] == 0 && + d40c->runtime_addr == 0) { + dev_err(&d40c->chan.dev->device, + "[%s] Invalid RX channel address (%d)\n", + __func__, conf->src_dev_type); + res = -EINVAL; + } + + if (conf->dir == STEDMA40_MEM_TO_PERIPH && dst_event_group == STEDMA40_DEV_DST_MEMORY) { dev_err(&d40c->chan.dev->device, "[%s] Invalid dst\n", __func__); res = -EINVAL; } - if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM && + if (conf->dir == STEDMA40_PERIPH_TO_MEM && src_event_group == STEDMA40_DEV_SRC_MEMORY) { dev_err(&d40c->chan.dev->device, "[%s] Invalid src\n", __func__); -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |