Re: [PATCH 6/7] HID: picoLCD: disable version check during probe
On Mon, 30 Jul 2012, Bruno Prémont wrote:
> Commit 4ea5454203d991ec85264f64f89ca8855fce69b0
> [HID: Fix race condition between driver core and ll-driver] introduced
> new locking around proce/remove functions that prevent any report/reply
> from hardware to reach driver until it returned from probe.
>
> As such, the ask-reply way to checking picoLCD firmware version during
> probe is bound to timeout and let probe fail.
>
> Disabling the check lets driver sucessfully probe again.
>
> Signed-off-by: Bruno Prémont
> ---
> drivers/hid/hid-picolcd_core.c |8
> 1 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c
> index 2d7ef68..42d0791 100644
> --- a/drivers/hid/hid-picolcd_core.c
> +++ b/drivers/hid/hid-picolcd_core.c
> @@ -478,13 +478,13 @@ static int picolcd_probe_lcd(struct hid_device *hdev,
> struct picolcd_data *data)
> {
> int error;
>
> - error = picolcd_check_version(hdev);
> +/* error = picolcd_check_version(hdev);
> if (error)
> return error;
>
> if (data->version[0] != 0 && data->version[1] != 3)
> hid_info(hdev, "Device with untested firmware revision, please
> submit /sys/kernel/debug/hid/%s/rdesc for this device.\n",
> - dev_name(>dev));
> + dev_name(>dev)); */
Please just remove it altogether, I don't see a reason to keep the
commented-out code in the in-tree driver.
Once the locking mess is sorted out, we can re-introduce it again as
necessary.
Thanks.
--
Jiri Kosina
SUSE Labs
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Re: [PATCH 6/7] HID: picoLCD: disable version check during probe
On Mon, 30 Jul 2012, Bruno Prémont wrote:
Commit 4ea5454203d991ec85264f64f89ca8855fce69b0
[HID: Fix race condition between driver core and ll-driver] introduced
new locking around proce/remove functions that prevent any report/reply
from hardware to reach driver until it returned from probe.
As such, the ask-reply way to checking picoLCD firmware version during
probe is bound to timeout and let probe fail.
Disabling the check lets driver sucessfully probe again.
Signed-off-by: Bruno Prémont bonb...@linux-vserver.org
---
drivers/hid/hid-picolcd_core.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c
index 2d7ef68..42d0791 100644
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -478,13 +478,13 @@ static int picolcd_probe_lcd(struct hid_device *hdev,
struct picolcd_data *data)
{
int error;
- error = picolcd_check_version(hdev);
+/* error = picolcd_check_version(hdev);
if (error)
return error;
if (data-version[0] != 0 data-version[1] != 3)
hid_info(hdev, Device with untested firmware revision, please
submit /sys/kernel/debug/hid/%s/rdesc for this device.\n,
- dev_name(hdev-dev));
+ dev_name(hdev-dev)); */
Please just remove it altogether, I don't see a reason to keep the
commented-out code in the in-tree driver.
Once the locking mess is sorted out, we can re-introduce it again as
necessary.
Thanks.
--
Jiri Kosina
SUSE Labs
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
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Please read the FAQ at http://www.tux.org/lkml/
[PATCH 6/7] HID: picoLCD: disable version check during probe
Commit 4ea5454203d991ec85264f64f89ca8855fce69b0
[HID: Fix race condition between driver core and ll-driver] introduced
new locking around proce/remove functions that prevent any report/reply
from hardware to reach driver until it returned from probe.
As such, the ask-reply way to checking picoLCD firmware version during
probe is bound to timeout and let probe fail.
Disabling the check lets driver sucessfully probe again.
Signed-off-by: Bruno Prémont
---
drivers/hid/hid-picolcd_core.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c
index 2d7ef68..42d0791 100644
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -478,13 +478,13 @@ static int picolcd_probe_lcd(struct hid_device *hdev,
struct picolcd_data *data)
{
int error;
- error = picolcd_check_version(hdev);
+/* error = picolcd_check_version(hdev);
if (error)
return error;
if (data->version[0] != 0 && data->version[1] != 3)
hid_info(hdev, "Device with untested firmware revision, please
submit /sys/kernel/debug/hid/%s/rdesc for this device.\n",
-dev_name(>dev));
+dev_name(>dev)); */
/* Setup keypad input device */
error = picolcd_init_keys(data, picolcd_in_report(REPORT_KEY_STATE,
hdev));
@@ -534,7 +534,7 @@ err:
static int picolcd_probe_bootloader(struct hid_device *hdev, struct
picolcd_data *data)
{
- int error;
+/* int error;
error = picolcd_check_version(hdev);
if (error)
@@ -542,7 +542,7 @@ static int picolcd_probe_bootloader(struct hid_device
*hdev, struct picolcd_data
if (data->version[0] != 1 && data->version[1] != 0)
hid_info(hdev, "Device with untested bootloader revision,
please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n",
-dev_name(>dev));
+dev_name(>dev)); */
picolcd_init_devfs(data, NULL, NULL,
picolcd_out_report(REPORT_BL_READ_MEMORY, hdev),
--
1.7.8.6
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[PATCH 6/7] HID: picoLCD: disable version check during probe
Commit 4ea5454203d991ec85264f64f89ca8855fce69b0
[HID: Fix race condition between driver core and ll-driver] introduced
new locking around proce/remove functions that prevent any report/reply
from hardware to reach driver until it returned from probe.
As such, the ask-reply way to checking picoLCD firmware version during
probe is bound to timeout and let probe fail.
Disabling the check lets driver sucessfully probe again.
Signed-off-by: Bruno Prémont bonb...@linux-vserver.org
---
drivers/hid/hid-picolcd_core.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c
index 2d7ef68..42d0791 100644
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -478,13 +478,13 @@ static int picolcd_probe_lcd(struct hid_device *hdev,
struct picolcd_data *data)
{
int error;
- error = picolcd_check_version(hdev);
+/* error = picolcd_check_version(hdev);
if (error)
return error;
if (data-version[0] != 0 data-version[1] != 3)
hid_info(hdev, Device with untested firmware revision, please
submit /sys/kernel/debug/hid/%s/rdesc for this device.\n,
-dev_name(hdev-dev));
+dev_name(hdev-dev)); */
/* Setup keypad input device */
error = picolcd_init_keys(data, picolcd_in_report(REPORT_KEY_STATE,
hdev));
@@ -534,7 +534,7 @@ err:
static int picolcd_probe_bootloader(struct hid_device *hdev, struct
picolcd_data *data)
{
- int error;
+/* int error;
error = picolcd_check_version(hdev);
if (error)
@@ -542,7 +542,7 @@ static int picolcd_probe_bootloader(struct hid_device
*hdev, struct picolcd_data
if (data-version[0] != 1 data-version[1] != 0)
hid_info(hdev, Device with untested bootloader revision,
please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n,
-dev_name(hdev-dev));
+dev_name(hdev-dev)); */
picolcd_init_devfs(data, NULL, NULL,
picolcd_out_report(REPORT_BL_READ_MEMORY, hdev),
--
1.7.8.6
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