diff options
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 5ab5880d5c90..b8c031b7de4e 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -14,6 +14,7 @@ #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/delay.h> +#include <linux/log2.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/err.h> @@ -2591,6 +2592,9 @@ dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr, int i; sg = kcalloc(periods + 1, sizeof(struct scatterlist), GFP_NOWAIT); + if (!sg) + return NULL; + for (i = 0; i < periods; i++) { sg_dma_address(&sg[i]) = dma_addr; sg_dma_len(&sg[i]) = period_len; @@ -2623,7 +2627,7 @@ static enum dma_status d40_tx_status(struct dma_chan *chan, } ret = dma_cookie_status(chan, cookie, txstate); - if (ret != DMA_SUCCESS) + if (ret != DMA_COMPLETE) dma_set_residue(txstate, stedma40_residue(chan)); if (d40_is_paused(d40c)) @@ -2793,8 +2797,8 @@ static int d40_set_runtime_config(struct dma_chan *chan, src_addr_width > DMA_SLAVE_BUSWIDTH_8_BYTES || dst_addr_width <= DMA_SLAVE_BUSWIDTH_UNDEFINED || dst_addr_width > DMA_SLAVE_BUSWIDTH_8_BYTES || - ((src_addr_width > 1) && (src_addr_width & 1)) || - ((dst_addr_width > 1) && (dst_addr_width & 1))) + !is_power_of_2(src_addr_width) || + !is_power_of_2(dst_addr_width)) return -EINVAL; cfg->src_info.data_width = src_addr_width; @@ -3139,7 +3143,7 @@ static int __init d40_phy_res_init(struct d40_base *base) static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) { - struct stedma40_platform_data *plat_data = pdev->dev.platform_data; + struct stedma40_platform_data *plat_data = dev_get_platdata(&pdev->dev); struct clk *clk = NULL; void __iomem *virtbase = NULL; struct resource *res = NULL; @@ -3226,8 +3230,8 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) num_log_chans = num_phy_chans * D40_MAX_LOG_CHAN_PER_PHY; dev_info(&pdev->dev, - "hardware rev: %d @ 0x%x with %d physical and %d logical channels\n", - rev, res->start, num_phy_chans, num_log_chans); + "hardware rev: %d @ %pa with %d physical and %d logical channels\n", + rev, &res->start, num_phy_chans, num_log_chans); base = kzalloc(ALIGN(sizeof(struct d40_base), 4) + (num_phy_chans + num_log_chans + num_memcpy_chans) * @@ -3485,7 +3489,7 @@ static int __init d40_of_probe(struct platform_device *pdev, { struct stedma40_platform_data *pdata; int num_phy = 0, num_memcpy = 0, num_disabled = 0; - const const __be32 *list; + const __be32 *list; pdata = devm_kzalloc(&pdev->dev, sizeof(struct stedma40_platform_data), @@ -3516,7 +3520,7 @@ static int __init d40_of_probe(struct platform_device *pdev, list = of_get_property(np, "disabled-channels", &num_disabled); num_disabled /= sizeof(*list); - if (num_disabled > STEDMA40_MAX_PHYS || num_disabled < 0) { + if (num_disabled >= STEDMA40_MAX_PHYS || num_disabled < 0) { d40_err(&pdev->dev, "Invalid number of disabled channels specified (%d)\n", num_disabled); @@ -3535,7 +3539,7 @@ static int __init d40_of_probe(struct platform_device *pdev, static int __init d40_probe(struct platform_device *pdev) { - struct stedma40_platform_data *plat_data = pdev->dev.platform_data; + struct stedma40_platform_data *plat_data = dev_get_platdata(&pdev->dev); struct device_node *np = pdev->dev.of_node; int ret = -ENOENT; struct d40_base *base = NULL; @@ -3579,9 +3583,7 @@ static int __init d40_probe(struct platform_device *pdev) if (request_mem_region(res->start, resource_size(res), D40_NAME " I/O lcpa") == NULL) { ret = -EBUSY; - d40_err(&pdev->dev, - "Failed to request LCPA region 0x%x-0x%x\n", - res->start, res->end); + d40_err(&pdev->dev, "Failed to request LCPA region %pR\n", res); goto failure; } @@ -3589,8 +3591,8 @@ static int __init d40_probe(struct platform_device *pdev) val = readl(base->virtbase + D40_DREG_LCPA); if (res->start != val && val != 0) { dev_warn(&pdev->dev, - "[%s] Mismatch LCPA dma 0x%x, def 0x%x\n", - __func__, val, res->start); + "[%s] Mismatch LCPA dma 0x%x, def %pa\n", + __func__, val, &res->start); } else writel(res->start, base->virtbase + D40_DREG_LCPA); |