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firmware: arm_scmi: Check shmem property for channel availablity

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Instead of declaring the channel availabilty unconditionally, let us
check for the presence of "shmem" property and return the channel
availablity accordingly.

Link: https://lore.kernel.org/r/20200327163654.13389-4-sudeep.holla@arm.com
Tested-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2020-03-27 16:36:53 +00:00
parent b9d15ee21c
commit 8aa6e12bbf
1 changed files with 5 additions and 0 deletions
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5
drivers/firmware/arm_scmi/smc.c
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@ -33,6 +33,11 @@ struct scmi_smc {
static bool smc_chan_available(struct device *dev, int idx)
{
struct device_node *np = of_parse_phandle(dev->of_node, "shmem", 0);
if (!np)
return false;
of_node_put(np);
return true;
}