[PATCH v5 01/13] firmware: arm_scmi: Perform earlier cinfo lookup call in do_xfer
From: Cristian Marussi <cristian.marussi@arm.com>
Date: 2021-09-23 14:58:32
Also in:
lkml
Subsystem:
system control & power/management interface (scpi/scmi) message protocol drivers, the rest · Maintainers:
Sudeep Holla, Linus Torvalds
Lookup cinfo data early in do_xfer so as to avoid any further init work on xfer structure in case of error. No functional change. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- drivers/firmware/arm_scmi/driver.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index b406b3f78f46..01c79a8fa77f 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c@@ -766,6 +766,10 @@ static int do_xfer(const struct scmi_protocol_handle *ph, return -EINVAL; } + cinfo = idr_find(&info->tx_idr, pi->proto->id); + if (unlikely(!cinfo)) + return -EINVAL; + /* * Initialise protocol id now from protocol handle to avoid it being * overridden by mistake (or malice) by the protocol code mangling with
@@ -774,10 +778,6 @@ static int do_xfer(const struct scmi_protocol_handle *ph, xfer->hdr.protocol_id = pi->proto->id; reinit_completion(&xfer->done); - cinfo = idr_find(&info->tx_idr, xfer->hdr.protocol_id); - if (unlikely(!cinfo)) - return -EINVAL; - trace_scmi_xfer_begin(xfer->transfer_id, xfer->hdr.id, xfer->hdr.protocol_id, xfer->hdr.seq, xfer->hdr.poll_completion);
--
2.17.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel