logi_dj_recv_query_paired_devices() and logi_dj_recv_switch_to_dj_mode() both have 2 callers which all log an error if the function fails. Move the error logging to inside these 2 functions to remove the duplicated error logging in the callers.

While at it also move the logi_dj_recv_send_report() call error handling in logi_dj_recv_switch_to_dj_mode() to directly after the call. That call only fails if the report cannot be found and in that case it does nothing, so the msleep() is not necessary on failures.

Fixes: 6f20d3261265 ("HID: logitech-dj: Fix error handling in logi_dj_recv_switch_to_dj_mode()") Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede johannes.goede@oss.qualcomm.com --- drivers/hid/hid-logitech-dj.c | 56 ++++++++++++++--------------------- 1 file changed, 23 insertions(+), 33 deletions(-)

diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c index d66f4807311a..58a848ed248d 100644 --- a/drivers/hid/hid-logitech-dj.c +++ b/drivers/hid/hid-logitech-dj.c @@ -889,7 +889,6 @@ static void delayedwork_callback(struct work_struct *work) struct dj_workitem workitem; unsigned long flags; int count; - int retval;

dbg_hid("%s\n", __func__);

@@ -926,11 +925,7 @@ static void delayedwork_callback(struct work_struct *work) logi_dj_recv_destroy_djhid_device(djrcv_dev, &workitem); break; case WORKITEM_TYPE_UNKNOWN: - retval = logi_dj_recv_query_paired_devices(djrcv_dev); - if (retval) { - hid_err(djrcv_dev->hidpp, "%s: logi_dj_recv_query_paired_devices error: %d\n", - __func__, retval); - } + logi_dj_recv_query_paired_devices(djrcv_dev); break; case WORKITEM_TYPE_EMPTY: dbg_hid("%s: device list is empty\n", __func__); @@ -1323,8 +1318,10 @@ static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)

djrcv_dev->last_query = jiffies;

- if (djrcv_dev->type != recvr_type_dj) - return logi_dj_recv_query_hidpp_devices(djrcv_dev); + if (djrcv_dev->type != recvr_type_dj) { + retval = logi_dj_recv_query_hidpp_devices(djrcv_dev); + goto out; + }

dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL); if (!dj_report) @@ -1334,6 +1331,10 @@ static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev) dj_report->report_type = REPORT_TYPE_CMD_GET_PAIRED_DEVICES; retval = logi_dj_recv_send_report(djrcv_dev, dj_report); kfree(dj_report); +out: + if (retval < 0) + hid_err(djrcv_dev->hidpp, "%s error:%d\n", __func__, retval); + return retval; }

@@ -1359,6 +1360,8 @@ static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev, (u8)timeout;

retval = logi_dj_recv_send_report(djrcv_dev, dj_report); + if (retval) + goto out;

/* * Ugly sleep to work around a USB 3.0 bug when the receiver is @@ -1367,11 +1370,6 @@ static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev, * 50 msec should gives enough time to the receiver to be ready. */ msleep(50); - - if (retval) { - kfree(dj_report); - return retval; - } }

/* @@ -1397,7 +1395,12 @@ static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev, HIDPP_REPORT_SHORT_LENGTH, HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);

+out: kfree(dj_report); + + if (retval < 0) + hid_err(hdev, "%s error:%d\n", __func__, retval); + return retval; }

@@ -1935,11 +1938,8 @@ static int logi_dj_probe(struct hid_device *hdev,

if (has_hidpp) { retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0); - if (retval < 0) { - hid_err(hdev, "%s: logi_dj_recv_switch_to_dj_mode returned error:%d\n", - __func__, retval); + if (retval < 0) goto switch_to_dj_mode_fail; - } }

/* This is enabling the polling urb on the IN endpoint */ @@ -1957,15 +1957,11 @@ static int logi_dj_probe(struct hid_device *hdev, spin_lock_irqsave(&djrcv_dev->lock, flags); djrcv_dev->ready = true; spin_unlock_irqrestore(&djrcv_dev->lock, flags); - retval = logi_dj_recv_query_paired_devices(djrcv_dev); - if (retval < 0) { - hid_err(hdev, "%s: logi_dj_recv_query_paired_devices error:%d\n", - __func__, retval); - /* - * This can happen with a KVM, let the probe succeed, - * logi_dj_recv_queue_unknown_work will retry later. - */ - } + /* + * This can fail with a KVM. Ignore errors to let the probe + * succeed, logi_dj_recv_queue_unknown_work will retry later. + */ + logi_dj_recv_query_paired_devices(djrcv_dev); }

return 0; @@ -1982,18 +1978,12 @@ static int logi_dj_probe(struct hid_device *hdev, #ifdef CONFIG_PM static int logi_dj_reset_resume(struct hid_device *hdev) { - int retval; struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);

if (!djrcv_dev || djrcv_dev->hidpp != hdev) return 0;

- retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0); - if (retval < 0) { - hid_err(hdev, "%s: logi_dj_recv_switch_to_dj_mode returned error:%d\n", - __func__, retval); - } - + logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0); return 0; } #endif