From 9efb052563003c050cf2ad84632746968d414af9 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 18 Dec 2008 13:52:39 +0100 Subject: [PATCH] Staging: go7007: small cleanup small cleanup of go7007: - prepare for urb->status conversion - micro optimization - use kzalloc - fix free of memory in use in go7007_usb_disconnect Signed-off-by: Oliver Neukum Cc: Cohen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/go7007/go7007-usb.c | 45 +++++++++++++++-------------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/drivers/staging/go7007/go7007-usb.c b/drivers/staging/go7007/go7007-usb.c index f18eaa4bffb..83eec920c7d 100644 --- a/drivers/staging/go7007/go7007-usb.c +++ b/drivers/staging/go7007/go7007-usb.c @@ -680,9 +680,10 @@ static void go7007_usb_readinterrupt_complete(struct urb *urb) { struct go7007 *go = (struct go7007 *)urb->context; u16 *regs = (u16 *)urb->transfer_buffer; + int status = urb->status; - if (urb->status != 0) { - if (urb->status != -ESHUTDOWN && + if (status) { + if (status != -ESHUTDOWN && go->status != STATUS_SHUTDOWN) { printk(KERN_ERR "go7007-usb: error in read interrupt: %d\n", @@ -723,15 +724,14 @@ static int go7007_usb_read_interrupt(struct go7007 *go) static void go7007_usb_read_video_pipe_complete(struct urb *urb) { struct go7007 *go = (struct go7007 *)urb->context; - int r; + int r, status = urb-> status; if (!go->streaming) { wake_up_interruptible(&go->frame_waitq); return; } - if (urb->status != 0) { - printk(KERN_ERR "go7007-usb: error in video pipe: %d\n", - urb->status); + if (status) { + printk(KERN_ERR "go7007-usb: error in video pipe: %d\n", status); return; } if (urb->actual_length != urb->transfer_buffer_length) { @@ -747,13 +747,12 @@ static void go7007_usb_read_video_pipe_complete(struct urb *urb) static void go7007_usb_read_audio_pipe_complete(struct urb *urb) { struct go7007 *go = (struct go7007 *)urb->context; - int r; + int r, status = urb->status; if (!go->streaming) return; - if (urb->status != 0) { - printk(KERN_ERR "go7007-usb: error in audio pipe: %d\n", - urb->status); + if (status) { + printk(KERN_ERR "go7007-usb: error in audio pipe: %d\n", status); return; } if (urb->actual_length != urb->transfer_buffer_length) { @@ -794,7 +793,7 @@ static int go7007_usb_stream_start(struct go7007 *go) return 0; audio_submit_failed: - for (i = 0; i < 8; ++i) + for (i = 0; i < 7; ++i) usb_kill_urb(usb->audio_urbs[i]); video_submit_failed: for (i = 0; i < 8; ++i) @@ -1019,10 +1018,9 @@ static int go7007_usb_probe(struct usb_interface *intf, return 0; } - usb = kmalloc(sizeof(struct go7007_usb), GFP_KERNEL); + usb = kzalloc(sizeof(struct go7007_usb), GFP_KERNEL); if (usb == NULL) return -ENOMEM; - memset(usb, 0, sizeof(struct go7007_usb)); /* Allocate the URB and buffer for receiving incoming interrupts */ usb->intr_urb = usb_alloc_urb(0, GFP_KERNEL); @@ -1227,6 +1225,7 @@ static void go7007_usb_disconnect(struct usb_interface *intf) { struct go7007 *go = usb_get_intfdata(intf); struct go7007_usb *usb = go->hpi_context; + struct urb *vurb, *aurb; int i; go->status = STATUS_SHUTDOWN; @@ -1234,15 +1233,19 @@ static void go7007_usb_disconnect(struct usb_interface *intf) /* Free USB-related structs */ for (i = 0; i < 8; ++i) { - if (usb->video_urbs[i] != NULL) { - if (usb->video_urbs[i]->transfer_buffer != NULL) - kfree(usb->video_urbs[i]->transfer_buffer); - usb_free_urb(usb->video_urbs[i]); + vurb = usb->video_urbs[i]; + if (vurb) { + usb_kill_urb(vurb); + if (vurb->transfer_buffer) + kfree(vurb->transfer_buffer); + usb_free_urb(vurb); } - if (usb->audio_urbs[i] != NULL) { - if (usb->audio_urbs[i]->transfer_buffer != NULL) - kfree(usb->audio_urbs[i]->transfer_buffer); - usb_free_urb(usb->audio_urbs[i]); + aurb = usb->audio_urbs[i]; + if (aurb) { + usb_kill_urb(aurb); + if (aurb->transfer_buffer) + kfree(aurb->transfer_buffer); + usb_free_urb(aurb); } } kfree(usb->intr_urb->transfer_buffer); -- 2.41.0