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| author | Antonio Borneo <antonio.borneo@foss.st.com> | 2022-05-12 18:05:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-25 11:17:29 +0200 |
| commit | 3fb368c0ae39ed6075fe45bef3ba9783213192a6 (patch) | |
| tree | c63bce9f6f20b4f04719dab85aac01a5f2c61493 /kernel | |
| parent | b3f423683818cfe15de14d5d9dff44148ff16bbf (diff) | |
| download | linux-3fb368c0ae39ed6075fe45bef3ba9783213192a6.tar.gz linux-3fb368c0ae39ed6075fe45bef3ba9783213192a6.tar.bz2 linux-3fb368c0ae39ed6075fe45bef3ba9783213192a6.zip | |
genirq: Don't return error on missing optional irq_request_resources()
[ Upstream commit 95001b756467ecc9f5973eb5e74e97699d9bbdf1 ]
Function irq_chip::irq_request_resources() is reported as optional
in the declaration of struct irq_chip.
If the parent irq_chip does not implement it, we should ignore it
and return.
Don't return error if the functions is missing.
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220512160544.13561-1-antonio.borneo@foss.st.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/chip.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 856f0297dc73..521121c2666c 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -1484,7 +1484,8 @@ int irq_chip_request_resources_parent(struct irq_data *data) if (data->chip->irq_request_resources) return data->chip->irq_request_resources(data); - return -ENOSYS; + /* no error on missing optional irq_chip::irq_request_resources */ + return 0; } EXPORT_SYMBOL_GPL(irq_chip_request_resources_parent); |