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| author | Marek Vasut <marek.vasut+renesas@mailbox.org> | 2025-09-22 17:07:48 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-09-25 18:02:30 -0500 |
| commit | 26fda92d3b56bf44a02bcb4001c5a5548e0ae8ee (patch) | |
| tree | b8986ddf8dec29eb627d20e0ee0a1cb96991e4c2 /drivers/gpu/drm/amd/amdgpu/atom.c | |
| parent | 4f152338e384a3a47dd61909e1457539fa93f5a4 (diff) | |
PCI: tegra: Convert struct tegra_msi mask_lock into raw spinlock
The tegra_msi_irq_unmask() function may be called from a PCI driver
request_threaded_irq() function. This triggers kernel/irq/manage.c
__setup_irq() which locks raw spinlock &desc->lock descriptor lock
and with that descriptor lock held, calls tegra_msi_irq_unmask().
Since the &desc->lock descriptor lock is a raw spinlock, and the tegra_msi
.mask_lock is not a raw spinlock, this setup triggers 'BUG: Invalid wait
context' with CONFIG_PROVE_RAW_LOCK_NESTING=y.
Use scoped_guard() to simplify the locking.
Fixes: 2c99e55f7955 ("PCI: tegra: Convert to MSI domains")
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Closes: https://patchwork.kernel.org/project/linux-pci/patch/20250909162707.13927-2-marek.vasut+renesas@mailbox.org/#26574451
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250922150811.88450-1-marek.vasut+renesas@mailbox.org
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atom.c')
0 files changed, 0 insertions, 0 deletions