[PATCH 38/51] DMA-API: staging: use dma_set_coherent_mask()
From: Russell King <hidden>
Date: 2013-09-19 22:03:03
Also in:
alsa-devel, dri-devel, linux-arm-kernel, linux-crypto, linux-devicetree, linux-fbdev, linux-ide, linux-mmc, linux-nvme, linux-omap, linux-samsung-soc, linux-scsi, linux-tegra, linux-wireless, netdev
Subsystem:
staging subsystem, the rest · Maintainers:
Greg Kroah-Hartman, Linus Torvalds
The correct way for a driver to specify the coherent DMA mask is not to directly access the field in the struct device, but to use dma_set_coherent_mask(). Only arch and bus code should access this member directly. Convert all direct write accesses to using the correct API. Signed-off-by: Russell King <redacted> --- drivers/staging/dwc2/platform.c | 5 +++-- drivers/staging/imx-drm/imx-drm-core.c | 8 ++++++-- drivers/staging/imx-drm/ipuv3-crtc.c | 4 +++- 3 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/dwc2/platform.c b/drivers/staging/dwc2/platform.c
index 44cce2f..1d68c49 100644
--- a/drivers/staging/dwc2/platform.c
+++ b/drivers/staging/dwc2/platform.c@@ -100,8 +100,9 @@ static int dwc2_driver_probe(struct platform_device *dev) */ if (!dev->dev.dma_mask) dev->dev.dma_mask = &dev->dev.coherent_dma_mask; - if (!dev->dev.coherent_dma_mask) - dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + retval = dma_set_coherent_mask(&dev->dev, DMA_BIT_MASK(32)); + if (retval) + return retval; irq = platform_get_irq(dev, 0); if (irq < 0) {
diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 47c5888..847f430 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c@@ -805,6 +805,12 @@ static struct drm_driver imx_drm_driver = { static int imx_drm_platform_probe(struct platform_device *pdev) { + int ret; + + ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + imx_drm_device->dev = &pdev->dev; return drm_platform_init(&imx_drm_driver, pdev);
@@ -847,8 +853,6 @@ static int __init imx_drm_init(void) goto err_pdev; } - imx_drm_pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32), - ret = platform_driver_register(&imx_drm_pdrv); if (ret) goto err_pdrv;
diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c b/drivers/staging/imx-drm/ipuv3-crtc.c
index 6fd37a7..9e73e8d 100644
--- a/drivers/staging/imx-drm/ipuv3-crtc.c
+++ b/drivers/staging/imx-drm/ipuv3-crtc.c@@ -523,7 +523,9 @@ static int ipu_drm_probe(struct platform_device *pdev) if (!pdata) return -EINVAL; - pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; ipu_crtc = devm_kzalloc(&pdev->dev, sizeof(*ipu_crtc), GFP_KERNEL); if (!ipu_crtc)
--
1.7.4.4