2019-09-15 03:37:21

by Mao Wenan

Subject: [PATCH] usbip: vhci_hcd indicate failed message

If the return value of vhci_init_attr_group and
sysfs_create_group is non-zero, which mean they failed
to init attr_group and create sysfs group, so it would
better add 'failed' message to indicate that.

Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
Signed-off-by: Mao Wenan <[email protected]>
---
drivers/usb/usbip/vhci_hcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 000ab7225717..dd54c95d2498 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
err = vhci_init_attr_group();
if (err) {
- pr_err("init attr group\n");
+ pr_err("init attr group failed\n");
return err;
}
err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
if (err) {
- pr_err("create sysfs files\n");
+ pr_err("create sysfs failed\n");
vhci_finish_attr_group();
return err;
}
--
2.20.1

2019-09-15 13:06:41

by Greg KH

Subject: Re: [PATCH] usbip: vhci_hcd indicate failed message

On Sun, Sep 15, 2019 at 11:43:32AM +0800, Mao Wenan wrote:
> If the return value of vhci_init_attr_group and
> sysfs_create_group is non-zero, which mean they failed
> to init attr_group and create sysfs group, so it would
> better add 'failed' message to indicate that.
>
> Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
> Signed-off-by: Mao Wenan <[email protected]>
> ---
> drivers/usb/usbip/vhci_hcd.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
> index 000ab7225717..dd54c95d2498 100644
> --- a/drivers/usb/usbip/vhci_hcd.c
> +++ b/drivers/usb/usbip/vhci_hcd.c
> @@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
> if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
> err = vhci_init_attr_group();
> if (err) {
> - pr_err("init attr group\n");
> + pr_err("init attr group failed\n");

dev_err() would also be good to use here.

> return err;
> }
> err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
> if (err) {
> - pr_err("create sysfs files\n");
> + pr_err("create sysfs failed\n");

Same here.

thanks,

greg k-h

2019-09-15 13:56:50

by walter harms

Subject: Re: [PATCH] usbip: vhci_hcd indicate failed message

Am 15.09.2019 05:43, schrieb Mao Wenan:
> If the return value of vhci_init_attr_group and
> sysfs_create_group is non-zero, which mean they failed
> to init attr_group and create sysfs group, so it would
> better add 'failed' message to indicate that.
>
> Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
> Signed-off-by: Mao Wenan <[email protected]>
> ---
> drivers/usb/usbip/vhci_hcd.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
> index 000ab7225717..dd54c95d2498 100644
> --- a/drivers/usb/usbip/vhci_hcd.c
> +++ b/drivers/usb/usbip/vhci_hcd.c
> @@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
> if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
> err = vhci_init_attr_group();
> if (err) {
> - pr_err("init attr group\n");
> + pr_err("init attr group failed\n");
> return err;
> }
> err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
> if (err) {
> - pr_err("create sysfs files\n");
> + pr_err("create sysfs failed\n");

I guess "sysfs files" is here intended ?

re,
wh

> vhci_finish_attr_group();
> return err;
> }

2019-09-15 16:48:59

by Mao Wenan

Subject: [PATCH v2] usbip: vhci_hcd indicate failed message

If the return value of vhci_init_attr_group and
sysfs_create_group is non-zero, which mean they failed
to init attr_group and create sysfs group, so it would
better add 'failed' message to indicate that.
This patch also change pr_err to dev_err to trace which
device is failed.

Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
Signed-off-by: Mao Wenan <[email protected]>
---
v2: change pr_err to dev_err.
drivers/usb/usbip/vhci_hcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 000ab7225717..bea28ec846ee 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
err = vhci_init_attr_group();
if (err) {
- pr_err("init attr group\n");
+ dev_err(hcd_dev(hcd), "init attr group failed\n");
return err;
}
err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
if (err) {
- pr_err("create sysfs files\n");
+ dev_err(hcd_dev(hcd), "create sysfs files failed\n");
vhci_finish_attr_group();
return err;
}
--
2.20.1

2019-09-16 13:23:29

by Shuah Khan

Subject: Re: [PATCH v2] usbip: vhci_hcd indicate failed message

On 9/15/19 8:22 AM, Mao Wenan wrote:
> If the return value of vhci_init_attr_group and
> sysfs_create_group is non-zero, which mean they failed
> to init attr_group and create sysfs group, so it would
> better add 'failed' message to indicate that.
> This patch also change pr_err to dev_err to trace which
> device is failed.
>
> Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
> Signed-off-by: Mao Wenan <[email protected]>
> ---
> v2: change pr_err to dev_err.
> drivers/usb/usbip/vhci_hcd.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
> index 000ab7225717..bea28ec846ee 100644
> --- a/drivers/usb/usbip/vhci_hcd.c
> +++ b/drivers/usb/usbip/vhci_hcd.c
> @@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
> if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
> err = vhci_init_attr_group();
> if (err) {
> - pr_err("init attr group\n");
> + dev_err(hcd_dev(hcd), "init attr group failed\n");

Why not include err information in the message. Helps figure out why
it failed.

> return err;
> }
> err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
> if (err) {
> - pr_err("create sysfs files\n");
> + dev_err(hcd_dev(hcd), "create sysfs files failed\n");
> vhci_finish_attr_group();
> return err;
> }
>

Why not include err information in the message. Helps figure out why
it failed.

thanks,
-- Shuah

2019-09-16 20:50:06

by Mao Wenan

Subject: [PATCH v3] usbip: vhci_hcd indicate failed message

If the return value of vhci_init_attr_group and
sysfs_create_group is non-zero, which mean they failed
to init attr_group and create sysfs group, so it would
better add 'failed' message to indicate that.
This patch also change pr_err to dev_err to trace which
device is failed.

Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
Signed-off-by: Mao Wenan <[email protected]>
---
v2: change pr_err to dev_err.
v3: add error code in failed messages.
drivers/usb/usbip/vhci_hcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 000ab7225717..144507751eae 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
err = vhci_init_attr_group();
if (err) {
- pr_err("init attr group\n");
+ dev_err(hcd_dev(hcd), "init attr group failed, err = %d\n", err);
return err;
}
err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
if (err) {
- pr_err("create sysfs files\n");
+ dev_err(hcd_dev(hcd), "create sysfs files failed, err = %d\n", err);
vhci_finish_attr_group();
return err;
}
--
2.20.1

2019-09-16 21:35:04

by Shuah Khan

Subject: Re: [PATCH v3] usbip: vhci_hcd indicate failed message

On 9/16/19 9:09 AM, Mao Wenan wrote:
> If the return value of vhci_init_attr_group and
> sysfs_create_group is non-zero, which mean they failed
> to init attr_group and create sysfs group, so it would
> better add 'failed' message to indicate that.
> This patch also change pr_err to dev_err to trace which
> device is failed.
>
> Fixes: 0775a9cbc694 ("usbip: vhci extension: modifications to vhci driver")
> Signed-off-by: Mao Wenan <[email protected]>
> ---
> v2: change pr_err to dev_err.
> v3: add error code in failed messages.
> drivers/usb/usbip/vhci_hcd.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
> index 000ab7225717..144507751eae 100644
> --- a/drivers/usb/usbip/vhci_hcd.c
> +++ b/drivers/usb/usbip/vhci_hcd.c
> @@ -1185,12 +1185,12 @@ static int vhci_start(struct usb_hcd *hcd)
> if (id == 0 && usb_hcd_is_primary_hcd(hcd)) {
> err = vhci_init_attr_group();
> if (err) {
> - pr_err("init attr group\n");
> + dev_err(hcd_dev(hcd), "init attr group failed, err = %d\n", err);
> return err;
> }
> err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
> if (err) {
> - pr_err("create sysfs files\n");
> + dev_err(hcd_dev(hcd), "create sysfs files failed, err = %d\n", err);
> vhci_finish_attr_group();
> return err;
> }
>

Looks good to me.

Acked-by: Shuah Khan <[email protected]>

thanks,
-- Shuah