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bus: fsl-mc: Check return value of platform_get_resource()

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platform_get_resource() returns NULL in case of failure, so check its
return value and propagate the error in order to prevent NULL pointer
dereference.

Fixes: 6305166c87 ("bus: fsl-mc: Add ACPI support for fsl-mc")
Cc: stable@vger.kernel.org
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/aKwuK6TRr5XNYQ8u@pc
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
This commit is contained in:
Salah Triki
2025-08-25 10:34:35 +01:00
committed by Christophe Leroy
parent 8f5ae30d69
commit 25f526507b
1 changed files with 3 additions and 0 deletions
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3
drivers/bus/fsl-mc/fsl-mc-bus.c
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@@ -1104,6 +1104,9 @@ static int fsl_mc_bus_probe(struct platform_device *pdev)
* Get physical address of MC portal for the root DPRC:
*/
plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!plat_res)
return -EINVAL;
mc_portal_phys_addr = plat_res->start;
mc_portal_size = resource_size(plat_res);
mc_portal_base_phys_addr = mc_portal_phys_addr & ~0x3ffffff;