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Message-Id: <20180516160816.20251-4-flo@geekplace.eu>
Date: Wed, 16 May 2018 18:08:16 +0200
From: Florian Schmaus <flo@...kplace.eu>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Florian Schmaus <flo@...kplace.eu>, linux-kernel@...r.kernel.org
Subject: [PATCH v5 3/3] driver-core: print bus registration error value
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@...kplace.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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