firmware: arm_ffa: Set dma_mask for ffa devices

JIRA: https://issues.redhat.com/browse/RHEL-102691
CVE: CVE-2025-38043

commit cc0aac7
Author: Viresh Kumar <[email protected]>
Date: Fri, 17 Jan 2025 15:35:52 +0530

    Set dma_mask for FFA devices, otherwise DMA allocation using the device pointer
    lead to following warning:

    WARNING: CPU: 1 PID: 1 at kernel/dma/mapping.c:597 dma_alloc_attrs+0xe0/0x124

    Signed-off-by: Viresh Kumar <[email protected]>
    Message-Id: <e3dd8042ac680bd74b6580c25df855d092079c18.1737107520.git.viresh.kumar@linaro.org>
    Signed-off-by: Sudeep Holla <[email protected]>

Signed-off-by: Marcin Juszkiewicz <[email protected]>

Author: hrw

drivers/firmware/arm_ffa/bus.c

@@ -212,6 +212,7 @@ ffa_device_register(const struct ffa_partition_info *part_info,
 	dev = &ffa_dev->dev;
 	dev->bus = &ffa_bus_type;
 	dev->release = ffa_release_device;
+	dev->dma_mask = &dev->coherent_dma_mask;
 	dev_set_name(&ffa_dev->dev, "arm-ffa-%d", id);
 
 	ffa_dev->id = id;