From 22b60658a90260e3fbd57824e3afe5682c6afcf5 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 18 Nov 2022 12:25:32 +0200 Subject: [PATCH] usb: musb: omap2430: Fix probe regression for missing resources [ Upstream commit ffbe2feac59b37c8dc536727552b4f375e1b9aec ] Probe for omap2430 glue layer is now broken for interrupt resources in all cases. Commit 239071064732 ("partially Revert "usb: musb: Set the DT node on the child device"") broke probing for SoCs using ti-sysc interconnect target module as the dt node is not found. Commit a1a2b7125e10 ("of/platform: Drop static setup of IRQ resource from DT core") caused omap3 to fail with error "-ENXIO: IRQ mc not found" as the IRQ resources are no longer automatically populated from devicetree. Let's fix the issues by calling device_set_of_node_from_dev() only if the SoC has been updated to probe with ti-sysc. And for legacy SoCs, let's populate the resources manually as needed. Note that once we have updated the SoCs to probe with proper devicetree data in all cases, this is no longer needed. But doing that requires patching both devicetree and SoC code, so let's fix the probe issues first. Fixes: a1a2b7125e10 ("of/platform: Drop static setup of IRQ resource from DT core") Fixes: 239071064732 ("partially Revert "usb: musb: Set the DT node on the child device"") Cc: H. Nikolaus Schaller Reported-by: Sicelo Mhlongo Tested-by: Sicelo Mhlongo Signed-off-by: Tony Lindgren Link: https://lore.kernel.org/r/20221118102532.34458-1-tony@atomide.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/musb/omap2430.c | 54 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index f571a65..476f55d 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -310,6 +311,7 @@ static int omap2430_probe(struct platform_device *pdev) struct device_node *control_node; struct platform_device *control_pdev; int ret = -ENOMEM, val; + bool populate_irqs = false; if (!np) return -ENODEV; @@ -328,6 +330,18 @@ static int omap2430_probe(struct platform_device *pdev) musb->dev.dma_mask = &omap2430_dmamask; musb->dev.coherent_dma_mask = omap2430_dmamask; + /* + * Legacy SoCs using omap_device get confused if node is moved + * because of interconnect properties mixed into the node. + */ + if (of_get_property(np, "ti,hwmods", NULL)) { + dev_warn(&pdev->dev, "please update to probe with ti-sysc\n"); + populate_irqs = true; + } else { + device_set_of_node_from_dev(&musb->dev, &pdev->dev); + } + of_node_put(np); + glue->dev = &pdev->dev; glue->musb = musb; glue->status = MUSB_UNKNOWN; @@ -389,6 +403,46 @@ static int omap2430_probe(struct platform_device *pdev) goto err2; } + if (populate_irqs) { + struct resource musb_res[3]; + struct resource *res; + int i = 0; + + memset(musb_res, 0, sizeof(*musb_res) * ARRAY_SIZE(musb_res)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + goto err2; + + musb_res[i].start = res->start; + musb_res[i].end = res->end; + musb_res[i].flags = res->flags; + musb_res[i].name = res->name; + i++; + + ret = of_irq_get_byname(np, "mc"); + if (ret > 0) { + musb_res[i].start = ret; + musb_res[i].flags = IORESOURCE_IRQ; + musb_res[i].name = "mc"; + i++; + } + + ret = of_irq_get_byname(np, "dma"); + if (ret > 0) { + musb_res[i].start = ret; + musb_res[i].flags = IORESOURCE_IRQ; + musb_res[i].name = "dma"; + i++; + } + + ret = platform_device_add_resources(musb, musb_res, i); + if (ret) { + dev_err(&pdev->dev, "failed to add IRQ resources\n"); + goto err2; + } + } + ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); if (ret) { dev_err(&pdev->dev, "failed to add platform_data\n"); -- 2.7.4