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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 12:04:22 +0200 |
| commit | 2ead548473f58c7960b6b939b79503c4a0a2c0bd (patch) | |
| tree | 9138553cd6d8a22a7262b984fae405dc5ce0afa2 | |
| parent | b7e0535060a60cc99eafc19cc665d979714cd73a (diff) | |
| download | linux-2ead548473f58c7960b6b939b79503c4a0a2c0bd.tar.gz linux-2ead548473f58c7960b6b939b79503c4a0a2c0bd.tar.bz2 linux-2ead548473f58c7960b6b939b79503c4a0a2c0bd.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 c1c0a4759c7e..5027da143728 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -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; |