From 74f5e1babde76149c2bb35ca5dbf4d0b9b38f161 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 22 Mar 2011 11:12:23 +0100 Subject: [PATCH] USB: cdc-acm: clean up read urb allocation Allocate read urbs and read buffers in the same loop during probe. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 29 +++++++++++++---------------- 1 file changed, 13 insertions(+), 16 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index f239e3bd6423..519c7b933508 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1177,8 +1177,17 @@ made_compressed_probe: goto alloc_fail5; } for (i = 0; i < num_rx_buf; i++) { + struct acm_rb *rb = &(acm->rb[i]); struct acm_ru *rcv = &(acm->ru[i]); + rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, + &rb->dma); + if (!rb->base) { + dev_err(&intf->dev, "out of memory " + "(read bufs usb_alloc_coherent)\n"); + goto alloc_fail6; + } + rcv->urb = usb_alloc_urb(0, GFP_KERNEL); if (rcv->urb == NULL) { dev_err(&intf->dev, @@ -1189,17 +1198,6 @@ made_compressed_probe: rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; rcv->instance = acm; } - for (i = 0; i < num_rx_buf; i++) { - struct acm_rb *rb = &(acm->rb[i]); - - rb->base = usb_alloc_coherent(acm->dev, readsize, - GFP_KERNEL, &rb->dma); - if (!rb->base) { - dev_err(&intf->dev, - "out of memory (read bufs usb_alloc_coherent)\n"); - goto alloc_fail7; - } - } for (i = 0; i < ACM_NW; i++) { struct acm_wb *snd = &(acm->wb[i]); @@ -1207,7 +1205,7 @@ made_compressed_probe: if (snd->urb == NULL) { dev_err(&intf->dev, "out of memory (write urbs usb_alloc_urb)\n"); - goto alloc_fail8; + goto alloc_fail7; } if (usb_endpoint_xfer_int(epwrite)) @@ -1226,7 +1224,7 @@ made_compressed_probe: i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); if (i < 0) - goto alloc_fail8; + goto alloc_fail7; if (cfd) { /* export the country data */ acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); @@ -1278,14 +1276,13 @@ skip_countries: acm_table[minor] = acm; return 0; -alloc_fail8: +alloc_fail7: for (i = 0; i < ACM_NW; i++) usb_free_urb(acm->wb[i].urb); -alloc_fail7: - acm_read_buffers_free(acm); alloc_fail6: for (i = 0; i < num_rx_buf; i++) usb_free_urb(acm->ru[i].urb); + acm_read_buffers_free(acm); usb_free_urb(acm->ctrlurb); alloc_fail5: acm_write_buffers_free(acm); -- 2.34.1