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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U8
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    Date
    On Thu, 2004-10-21 at 11:12, Rui Nuno Capela wrote:

    Can you try that one ?

    diff -urN 2.6.9-rc4-mm1-RT-U8/drivers/usb/storage/scsiglue.c
    2.6.9-rc4-mm1-RT-U8.1/drivers/usb/storage/scsiglue.c
    --- 2.6.9-rc4-mm1-RT-U8/drivers/usb/storage/scsiglue.c 2004-10-12
    09:41:44.000000000 +0200
    +++ 2.6.9-rc4-mm1-RT-U8.1/drivers/usb/storage/scsiglue.c 2004-10-21
    11:45:14.000000000 +0200
    @@ -187,7 +187,7 @@
    us->srb = srb;

    /* wake up the process task */
    - up(&(us->sema));
    + complete(&(us->done));

    return 0;
    }
    diff -urN 2.6.9-rc4-mm1-RT-U8/drivers/usb/storage/usb.c
    2.6.9-rc4-mm1-RT-U8.1/drivers/usb/storage/usb.c
    --- 2.6.9-rc4-mm1-RT-U8/drivers/usb/storage/usb.c 2004-10-12
    09:41:44.000000000 +0200
    +++ 2.6.9-rc4-mm1-RT-U8.1/drivers/usb/storage/usb.c 2004-10-21
    11:45:34.000000000 +0200
    @@ -299,7 +299,7 @@

    for(;;) {
    US_DEBUGP("*** thread sleeping.\n");
    - if(down_interruptible(&us->sema))
    + if(wait_for_completion_interruptible(&us->done))
    break;

    US_DEBUGP("*** thread awakened.\n");
    @@ -941,7 +941,7 @@
    }
    memset(us, 0, sizeof(struct us_data));
    init_MUTEX(&(us->dev_semaphore));
    - init_MUTEX_LOCKED(&(us->sema));
    + init_completion(&(us->done));
    init_completion(&(us->notify));
    init_waitqueue_head(&us->dev_reset_wait);
    init_waitqueue_head(&us->scsi_scan_wait);
    diff -urN 2.6.9-rc4-mm1-RT-U8/drivers/usb/storage/usb.h
    2.6.9-rc4-mm1-RT-U8.1/drivers/usb/storage/usb.h
    --- 2.6.9-rc4-mm1-RT-U8/drivers/usb/storage/usb.h 2004-10-12
    09:41:44.000000000 +0200
    +++ 2.6.9-rc4-mm1-RT-U8.1/drivers/usb/storage/usb.h 2004-10-21
    11:45:13.000000000 +0200
    @@ -159,8 +159,8 @@
    dma_addr_t iobuf_dma;

    /* mutual exclusion and synchronization structures */
    - struct semaphore sema; /* to sleep thread on */
    - struct completion notify; /* thread begin/end */
    + struct completion done; /* to sleep thread on */
    + struct completion notify; /* thread begin/end */
    wait_queue_head_t dev_reset_wait; /* wait during reset */
    wait_queue_head_t scsi_scan_wait; /* wait before scanning */
    struct completion scsi_scan_done; /* scan thread end */

    -
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