diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0297-staging-vc-sm-cma-Correct-DMA-configuration.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0297-staging-vc-sm-cma-Correct-DMA-configuration.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0297-staging-vc-sm-cma-Correct-DMA-configuration.patch b/target/linux/bcm27xx/patches-4.19/950-0297-staging-vc-sm-cma-Correct-DMA-configuration.patch new file mode 100644 index 0000000000..8709eef289 --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0297-staging-vc-sm-cma-Correct-DMA-configuration.patch @@ -0,0 +1,44 @@ +From ea000a969afa022776bdf8050aaa501b2679e028 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Tue, 29 Jan 2019 16:24:41 +0000 +Subject: [PATCH] staging: vc-sm-cma: Correct DMA configuration. + +Now that VCHIQ is setting up the DMA configuration as our +parent device, don't try to configure it during probe. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/staging/vc04_services/vc-sm-cma/vc_sm.c | 15 +++++---------- + 1 file changed, 5 insertions(+), 10 deletions(-) + +--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c ++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c +@@ -703,9 +703,6 @@ err_free_mem: + /* Driver loading. */ + static int bcm2835_vc_sm_cma_probe(struct platform_device *pdev) + { +- struct device *dev = &pdev->dev; +- int err; +- + pr_info("%s: Videocore shared memory driver\n", __func__); + + sm_state = kzalloc(sizeof(*sm_state), GFP_KERNEL); +@@ -714,13 +711,11 @@ static int bcm2835_vc_sm_cma_probe(struc + sm_state->pdev = pdev; + mutex_init(&sm_state->map_lock); + +- dev->coherent_dma_mask = DMA_BIT_MASK(32); +- dev->dma_mask = &dev->coherent_dma_mask; +- err = of_dma_configure(dev, NULL, true); +- if (err) { +- dev_err(dev, "Unable to setup DMA: %d\n", err); +- return err; +- } ++ pdev->dev.dma_parms = devm_kzalloc(&pdev->dev, ++ sizeof(*pdev->dev.dma_parms), ++ GFP_KERNEL); ++ /* dma_set_max_seg_size checks if dma_parms is NULL. */ ++ dma_set_max_seg_size(&pdev->dev, 0x3FFFFFFF); + + vchiq_add_connected_callback(vc_sm_connected_init); + return 0; |