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| author | Salah Triki <salah.triki@gmail.com> | 2025-08-25 10:34:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-15 11:56:41 +0200 |
| commit | e60d55692e6c8e951000343c39f3fc92cab57efc (patch) | |
| tree | dd56a516d8acef586629befa690490ee82a9f30d | |
| parent | ba7f7c2b2b3261e7def67018c38c69b626e0e66e (diff) | |
| download | linux-e60d55692e6c8e951000343c39f3fc92cab57efc.tar.gz linux-e60d55692e6c8e951000343c39f3fc92cab57efc.tar.bz2 linux-e60d55692e6c8e951000343c39f3fc92cab57efc.zip | |
bus: fsl-mc: Check return value of platform_get_resource()
commit 25f526507b8ccc6ac3a43bc094d09b1f9b0b90ae upstream.
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: 6305166c8771 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-bus.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 3447930240b8..8ae7e7bfc624 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -1172,6 +1172,9 @@ 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; |