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Merge tag 'tegra-for-6.19-core' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers

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amba: Fixes for v6.19-rc1

Fix a device leak. Could go into v6.18 as a fix, but since this problem
has existed for a long time and nobody has reported it before it doesn't
seem critical enough and sufficient to get it into 6.19 and then
backported.

* tag 'tegra-for-6.19-core' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  amba: tegra-ahb: Fix device leak on SMMU enable

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
2025-11-25 10:24:21 +01:00
parent 9b26d16d79 500e1368e4
commit 5d5b056ba3
1 changed files with 1 additions and 0 deletions
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drivers/amba/tegra-ahb.c
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@@ -144,6 +144,7 @@ int tegra_ahb_enable_smmu(struct device_node *dn)
if (!dev) if (!dev)
return -EPROBE_DEFER; return -EPROBE_DEFER;
ahb = dev_get_drvdata(dev); ahb = dev_get_drvdata(dev);
put_device(dev);
val = gizmo_readl(ahb, AHB_ARBITRATION_XBAR_CTRL); val = gizmo_readl(ahb, AHB_ARBITRATION_XBAR_CTRL);
val |= AHB_ARBITRATION_XBAR_CTRL_SMMU_INIT_DONE; val |= AHB_ARBITRATION_XBAR_CTRL_SMMU_INIT_DONE;
gizmo_writel(ahb, val, AHB_ARBITRATION_XBAR_CTRL); gizmo_writel(ahb, val, AHB_ARBITRATION_XBAR_CTRL);