Tegra30 AHUB uses global variable that is never reset by the driver on a probe failure and on driver removal, meaning that driver will never try to re-probe and can't be unbound. Make driver to reset the variable.
Signed-off-by: Dmitry Osipenko digetx@gmail.com --- sound/soc/tegra/tegra30_ahub.c | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-)
diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c index d24c26f4960d..409a259e6343 100644 --- a/sound/soc/tegra/tegra30_ahub.c +++ b/sound/soc/tegra/tegra30_ahub.c @@ -518,9 +518,6 @@ static int tegra30_ahub_probe(struct platform_device *pdev) void __iomem *regs_apbif, *regs_ahub; int ret = 0;
- if (ahub) - return -ENODEV; - match = of_match_device(tegra30_ahub_of_match, &pdev->dev); if (!match) return -EINVAL; @@ -544,19 +541,21 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
ret = devm_clk_bulk_get(&pdev->dev, ahub->nclocks, ahub->clocks); if (ret) - return ret; + goto err_unset_ahub;
ret = devm_reset_control_bulk_get_exclusive(&pdev->dev, ahub->nresets, ahub->resets); if (ret) { dev_err(&pdev->dev, "Can't get resets: %d\n", ret); - return ret; + goto err_unset_ahub; }
res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); regs_apbif = devm_ioremap_resource(&pdev->dev, res0); - if (IS_ERR(regs_apbif)) - return PTR_ERR(regs_apbif); + if (IS_ERR(regs_apbif)) { + ret = PTR_ERR(regs_apbif); + goto err_unset_ahub; + }
ahub->apbif_addr = res0->start;
@@ -565,20 +564,22 @@ static int tegra30_ahub_probe(struct platform_device *pdev) if (IS_ERR(ahub->regmap_apbif)) { dev_err(&pdev->dev, "apbif regmap init failed\n"); ret = PTR_ERR(ahub->regmap_apbif); - return ret; + goto err_unset_ahub; } regcache_cache_only(ahub->regmap_apbif, true);
regs_ahub = devm_platform_ioremap_resource(pdev, 1); - if (IS_ERR(regs_ahub)) - return PTR_ERR(regs_ahub); + if (IS_ERR(regs_ahub)) { + ret = PTR_ERR(regs_ahub); + goto err_unset_ahub; + }
ahub->regmap_ahub = devm_regmap_init_mmio(&pdev->dev, regs_ahub, &tegra30_ahub_ahub_regmap_config); if (IS_ERR(ahub->regmap_ahub)) { dev_err(&pdev->dev, "ahub regmap init failed\n"); ret = PTR_ERR(ahub->regmap_ahub); - return ret; + goto err_unset_ahub; } regcache_cache_only(ahub->regmap_ahub, true);
@@ -595,19 +596,20 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
err_pm_disable: pm_runtime_disable(&pdev->dev); +err_unset_ahub: + ahub = NULL;
return ret; }
static int tegra30_ahub_remove(struct platform_device *pdev) { - if (!ahub) - return -ENODEV; - pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) tegra30_ahub_runtime_suspend(&pdev->dev);
+ ahub = NULL; + return 0; }