Messages in this thread Patch in this message | | | From | Florian Schmaus <> | Subject | [PATCH v5 3/3] driver-core: print bus registration error value | Date | Wed, 16 May 2018 18:08:16 +0200 |
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If driver_register() is called with an device driver which previously called bus_register() but failed, then print out the bus_register() error code.
Signed-off-by: Florian Schmaus <flo@geekplace.eu> ---
Notes: - Do not split long strings across lines.
drivers/base/driver.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/base/driver.c b/drivers/base/driver.c index 16b81d1c6cb7..a1fe7cb43c7e 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -149,8 +149,14 @@ int driver_register(struct device_driver *drv) struct device_driver *other; if (!drv->bus->p) { - pr_err("Driver '%s' was unable to register with bus_type '%s' because it was not initialized.\n", - drv->name, drv->bus->name); + if (drv->bus->bus_register_error) { + pr_err("Driver '%s' was unable to register with bus_type '%s' because of error: %d.\n", + drv->name, drv->bus->name, + drv->bus->bus_register_error); + } else { + pr_err("Driver '%s' was unable to register with bus_type '%s' because it was not initialized.\n", + drv->name, drv->bus->name); + } return -EINVAL; } -- 2.16.1
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