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authorCristian Marussi <cristian.marussi@arm.com>2023-02-23 16:23:30 +0100
committerSudeep Holla <sudeep.holla@arm.com>2023-03-06 09:42:33 +0100
commitb2b76e977fc6bc38e6a4dedb62b34bc90cc6ce97 (patch)
tree2c767684da6a1ab730409764dbc8f0394af45c40 /drivers
parentfirmware: arm_scmi: Remove duplicate include header inclusion (diff)
downloadlinux-b2b76e977fc6bc38e6a4dedb62b34bc90cc6ce97.tar.xz
linux-b2b76e977fc6bc38e6a4dedb62b34bc90cc6ce97.zip
firmware: arm_scmi: Fix raw coexistence mode behaviour on failure path
When SCMI raw coexistence mode is enabled make the core stack probe successfully even when the initial base protocol exchanges with the platform/server failed. This behaviour enables the system to boot with a broken regular SCMI stack but with a fully functional and accessible SCMI raw debugfs interface that can be used to further debug the issue. Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Link: https://lore.kernel.org/r/20230223152330.2707260-1-cristian.marussi@arm.com Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firmware/arm_scmi/driver.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 703f16ef3953..15a431639d82 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -2657,6 +2657,7 @@ static int scmi_probe(struct platform_device *pdev)
struct scmi_handle *handle;
const struct scmi_desc *desc;
struct scmi_info *info;
+ bool coex = IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT_COEX);
struct device *dev = &pdev->dev;
struct device_node *child, *np = dev->of_node;
@@ -2731,9 +2732,6 @@ static int scmi_probe(struct platform_device *pdev)
dev_warn(dev, "Failed to setup SCMI debugfs.\n");
if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT)) {
- bool coex =
- IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT_COEX);
-
ret = scmi_debugfs_raw_mode_setup(info);
if (!coex) {
if (ret)
@@ -2764,6 +2762,8 @@ static int scmi_probe(struct platform_device *pdev)
ret = scmi_protocol_acquire(handle, SCMI_PROTOCOL_BASE);
if (ret) {
dev_err(dev, "unable to communicate with SCMI\n");
+ if (coex)
+ return 0;
goto notification_exit;
}