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of: property: Avoiding using uninitialized variable @imaplen in parse_interrupt_map()

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[ Upstream commit f73780e772c06901e99b2ad114b7f0f3fbe73ad4 ]

parse_interrupt_map() will use uninitialized variable @imaplen if fails
to get property 'interrupt-map'.

Fix by using the variable after successfully getting the property.

Fixes: e7985f4360 ("of: property: Fix fw_devlink handling of interrupt-map")
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20250109-of_core_fix-v4-6-db8a72415b8c@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zijun Hu
2025-01-09 21:26:57 +08:00
committed by Greg Kroah-Hartman
parent 823ad923af
commit 6cffdf4838
1 changed files with 1 additions and 1 deletions
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2
drivers/of/property.c
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@@ -1317,9 +1317,9 @@ static struct device_node *parse_interrupt_map(struct device_node *np,
addrcells = of_bus_n_addr_cells(np);
imap = of_get_property(np, "interrupt-map", &imaplen);
imaplen /= sizeof(*imap);
if (!imap)
return NULL;
imaplen /= sizeof(*imap);
imap_end = imap + imaplen;