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path: root/drivers/firmware/arm_scmi/clock.c
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2018-05-10firmware: arm_scmi: rename scmi_xfer_{init,get,put}Sudeep Holla1-12/+12
Just after the initial patches were queued, Jonathan Cameron mentioned that scmi_one_xfer_{get_put} were not very clear and suggested to use scmi_xfer_{alloc,free}. While I agree to some extent, the reason not to have alloc/free as these are preallocated buffers and these functions just returns a reference to free slot in that preallocated array. However it was agreed to drop "_one" as it's implicit that we are always dealing with one slot anyways. This patch updates the name accordingly dropping "_one" in both {get,put} functions. Also scmi_one_xfer_init is renamed as scmi_xfer_get_init to reflect the fact that it gets the free slots and then initialise it. Reported-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2018-04-16firmware: arm_scmi: remove redundant null check on arrayColin Ian King1-1/+1
The null check on clk->name is redundant since name is a char array and can never be null, so the check is always true. Remove it. Detected by CoverityScan, CID#1466117 ("Array compared against 0") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2018-03-20firmware: arm_scmi: prevent accessing rate_discrete uninitializedAnders Roxell1-2/+3
gcc-5.3 and earlier warns that rate_discrete maybe-uninitialized ../drivers/firmware/arm_scmi/clock.c:185:5: warning: 'rate_discrete' may be used uninitialized in this function [-Wmaybe-uninitialized] if (rate_discrete) ^ ../drivers/firmware/arm_scmi/clock.c:128:7: note: 'rate_discrete' was declared here bool rate_discrete; ^ This patch fixing the warning by initialising rate_discrete and also using goto label for the error path. Fixes: 5f6c6430e904 ("firmware: arm_scmi: add initial support for clock protocol") Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Anders Roxell <anders.roxell@linaro.org> [sudeep.holla: added one line description to the commit message] Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2018-02-28firmware: arm_scmi: add initial support for clock protocolSudeep Holla1-0/+342
The clock protocol is intended for management of clocks. It is used to enable or disable clocks, and to set and get the clock rates. This protocol provides commands to describe the protocol version, discover various implementation specific attributes, describe a clock, enable and disable a clock and get/set the rate of the clock synchronously or asynchronously. This patch adds initial support for the clock protocol. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>