diff options
Diffstat (limited to 'drivers/media/rc/imon.c')
| -rw-r--r-- | drivers/media/rc/imon.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c index 6bc35eeb653..6ed96465137 100644 --- a/drivers/media/rc/imon.c +++ b/drivers/media/rc/imon.c @@ -34,6 +34,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/uaccess.h> +#include <linux/ratelimit.h> #include <linux/input.h> #include <linux/usb.h> @@ -516,19 +517,19 @@ static int send_packet(struct imon_context *ictx) if (retval) { ictx->tx.busy = false; smp_rmb(); /* ensure later readers know we're not busy */ - pr_err("error submitting urb(%d)\n", retval); + pr_err_ratelimited("error submitting urb(%d)\n", retval); } else { /* Wait for transmission to complete (or abort) */ mutex_unlock(&ictx->lock); retval = wait_for_completion_interruptible( &ictx->tx.finished); if (retval) - pr_err("task interrupted\n"); + pr_err_ratelimited("task interrupted\n"); mutex_lock(&ictx->lock); retval = ictx->tx.status; if (retval) - pr_err("packet tx failed (%d)\n", retval); + pr_err_ratelimited("packet tx failed (%d)\n", retval); } kfree(control_req); @@ -830,20 +831,20 @@ static ssize_t vfd_write(struct file *file, const char *buf, ictx = file->private_data; if (!ictx) { - pr_err("no context for device\n"); + pr_err_ratelimited("no context for device\n"); return -ENODEV; } mutex_lock(&ictx->lock); if (!ictx->dev_present_intf0) { - pr_err("no iMON device present\n"); + pr_err_ratelimited("no iMON device present\n"); retval = -ENODEV; goto exit; } if (n_bytes <= 0 || n_bytes > 32) { - pr_err("invalid payload size\n"); + pr_err_ratelimited("invalid payload size\n"); retval = -EINVAL; goto exit; } @@ -869,7 +870,7 @@ static ssize_t vfd_write(struct file *file, const char *buf, retval = send_packet(ictx); if (retval) { - pr_err("send packet failed for packet #%d\n", seq / 2); + pr_err_ratelimited("send packet #%d failed\n", seq / 2); goto exit; } else { seq += 2; @@ -883,7 +884,7 @@ static ssize_t vfd_write(struct file *file, const char *buf, ictx->usb_tx_buf[7] = (unsigned char) seq; retval = send_packet(ictx); if (retval) - pr_err("send packet failed for packet #%d\n", seq / 2); + pr_err_ratelimited("send packet #%d failed\n", seq / 2); exit: mutex_unlock(&ictx->lock); @@ -912,20 +913,21 @@ static ssize_t lcd_write(struct file *file, const char *buf, ictx = file->private_data; if (!ictx) { - pr_err("no context for device\n"); + pr_err_ratelimited("no context for device\n"); return -ENODEV; } mutex_lock(&ictx->lock); if (!ictx->display_supported) { - pr_err("no iMON display present\n"); + pr_err_ratelimited("no iMON display present\n"); retval = -ENODEV; goto exit; } if (n_bytes != 8) { - pr_err("invalid payload size: %d (expected 8)\n", (int)n_bytes); + pr_err_ratelimited("invalid payload size: %d (expected 8)\n", + (int)n_bytes); retval = -EINVAL; goto exit; } @@ -937,7 +939,7 @@ static ssize_t lcd_write(struct file *file, const char *buf, retval = send_packet(ictx); if (retval) { - pr_err("send packet failed!\n"); + pr_err_ratelimited("send packet failed!\n"); goto exit; } else { dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n", @@ -1656,7 +1658,7 @@ static void usb_rx_callback_intf0(struct urb *urb) return; ictx = (struct imon_context *)urb->context; - if (!ictx) + if (!ictx || !ictx->dev_present_intf0) return; switch (urb->status) { @@ -1688,7 +1690,7 @@ static void usb_rx_callback_intf1(struct urb *urb) return; ictx = (struct imon_context *)urb->context; - if (!ictx) + if (!ictx || !ictx->dev_present_intf1) return; switch (urb->status) { @@ -2116,7 +2118,6 @@ static struct imon_context *imon_init_intf0(struct usb_interface *intf) ictx->dev = dev; ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf)); - ictx->dev_present_intf0 = true; ictx->rx_urb_intf0 = rx_urb; ictx->tx_urb = tx_urb; ictx->rf_device = false; @@ -2155,6 +2156,8 @@ static struct imon_context *imon_init_intf0(struct usb_interface *intf) goto rdev_setup_failed; } + ictx->dev_present_intf0 = true; + mutex_unlock(&ictx->lock); return ictx; @@ -2198,7 +2201,6 @@ static struct imon_context *imon_init_intf1(struct usb_interface *intf, } ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); - ictx->dev_present_intf1 = true; ictx->rx_urb_intf1 = rx_urb; ret = -ENODEV; @@ -2227,6 +2229,8 @@ static struct imon_context *imon_init_intf1(struct usb_interface *intf, goto urb_submit_failed; } + ictx->dev_present_intf1 = true; + mutex_unlock(&ictx->lock); return ictx; |