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firmware: arm_scmi: Expand SMC/HVC message pool to more than one 

SMC/HVC can transmit only one message at the time as the shared memory
needs to be protected and the calls are synchronous.

However, in order to allow multiple threads to send SCMI messages
simultaneously, we need a larger poll of memory.

Let us just use value of 20 to keep it in sync mailbox transport
implementation. Any other value must work perfectly.

Link: https://lore.kernel.org/r/20201008143722.21888-4-etienne.carriere@linaro.org
Fixes: 1dc6558062 ("firmware: arm_scmi: Add smc/hvc transport")
Cc: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
[sudeep.holla: reworded the commit message to indicate the practicality]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
zero-sugar-mainline-defconfig
Etienne Carriere 2020-10-08 16:37:21 +02:00 committed by Sudeep Holla
parent 45b9e04d5b
commit 7adb2c8aaa
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/arm_scmi/smc.c
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@ -149,6 +149,6 @@ static const struct scmi_transport_ops scmi_smc_ops = {
const struct scmi_desc scmi_smc_desc = {
.ops = &scmi_smc_ops,
.max_rx_timeout_ms = 30,
.max_msg = 1,
.max_msg = 20,
.max_msg_size = 128,
};