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Input: cm109 - convert high volume dev_err() to dev_err_ratelimited() 

BugLink: http://bugs.launchpad.net/bugs/1222850

This input device can get into a state that produces a high
volume of device status errors. Attempt to throttle these
error messages such that the kernel log is not flooded.

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Tim Gardner 2013-09-19 14:24:04 -07:00 committed by Dmitry Torokhov
parent a60a71b035
commit 0a6ad06c43
1 changed files with 10 additions and 4 deletions
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14
drivers/input/misc/cm109.c
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@ -351,7 +351,9 @@ static void cm109_urb_irq_callback(struct urb *urb)
if (status) { if (status) {
if (status == -ESHUTDOWN) if (status == -ESHUTDOWN)
return; return;
dev_err(&dev->intf->dev, "%s: urb status %d\n", __func__, status); dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n",
__func__, status);
goto out;
} }
/* Special keys */ /* Special keys */
@ -418,8 +420,12 @@ static void cm109_urb_ctl_callback(struct urb *urb)
dev->ctl_data->byte[2], dev->ctl_data->byte[2],
dev->ctl_data->byte[3]); dev->ctl_data->byte[3]);
if (status) if (status) {
dev_err(&dev->intf->dev, "%s: urb status %d\n", __func__, status); if (status == -ESHUTDOWN)
return;
dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n",
__func__, status);
}
spin_lock(&dev->ctl_submit_lock); spin_lock(&dev->ctl_submit_lock);
@ -427,7 +433,7 @@ static void cm109_urb_ctl_callback(struct urb *urb)
if (likely(!dev->shutdown)) { if (likely(!dev->shutdown)) {
if (dev->buzzer_pending) { if (dev->buzzer_pending || status) {
dev->buzzer_pending = 0; dev->buzzer_pending = 0;
dev->ctl_urb_pending = 1; dev->ctl_urb_pending = 1;
cm109_submit_buzz_toggle(dev); cm109_submit_buzz_toggle(dev);