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    Subject[v0 PATCH 4/5] EDAC: Add edac_device_alloc_index()
    Date
    Add edac_device_alloc_index(), because for MAPLE platform there may
    exist several EDAC driver modules that could make use of
    edac_device_ctl_info structure at the same time. The index allocation
    for these structures should be taken care of by EDAC core.

    Signed-off-by: Harry Ciao <qingtao.cao@windriver.com>
    ---
    drivers/edac/amd8111_edac.c | 3 +--
    drivers/edac/edac_core.h | 1 +
    drivers/edac/edac_device.c | 13 +++++++++++++
    3 files changed, 15 insertions(+), 2 deletions(-)

    --- a/drivers/edac/amd8111_edac.c
    +++ b/drivers/edac/amd8111_edac.c
    @@ -37,7 +37,6 @@
    #define AMD8111_EDAC_MOD_STR "amd8111_edac"

    #define PCI_DEVICE_ID_AMD_8111_PCI 0x7460
    -static int edac_dev_idx;

    enum amd8111_edac_devs {
    LPC_BRIDGE = 0,
    @@ -377,7 +376,7 @@ static int amd8111_dev_probe(struct pci_
    * edac_device_ctl_info, but make use of existing
    * one instead.
    */
    - dev_info->edac_idx = edac_dev_idx++;
    + dev_info->edac_idx = edac_device_alloc_index();
    dev_info->edac_dev =
    edac_device_alloc_ctl_info(0, dev_info->ctl_name, 1,
    NULL, 0, 0,
    --- a/drivers/edac/edac_core.h
    +++ b/drivers/edac/edac_core.h
    @@ -819,6 +819,7 @@ extern void edac_device_handle_ue(struct
    int inst_nr, int block_nr, const char *msg);
    extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
    int inst_nr, int block_nr, const char *msg);
    +extern int edac_device_alloc_index(void);

    /*
    * edac_pci APIs
    --- a/drivers/edac/edac_device.c
    +++ b/drivers/edac/edac_device.c
    @@ -37,6 +37,7 @@
    */
    static DEFINE_MUTEX(device_ctls_mutex);
    static LIST_HEAD(edac_device_list);
    +static atomic_t device_indexes = ATOMIC_INIT(0);

    #ifdef CONFIG_EDAC_DEBUG
    static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev)
    @@ -490,6 +491,18 @@ void edac_device_reset_delay_period(stru
    mutex_unlock(&device_ctls_mutex);
    }

    +/*
    + * edac_device_alloc_index: Allocate a unique device index number
    + *
    + * Return:
    + * allocated index number
    + */
    +int edac_device_alloc_index(void)
    +{
    + return atomic_inc_return(&device_indexes) - 1;
    +}
    +EXPORT_SYMBOL_GPL(edac_device_alloc_index);
    +
    /**
    * edac_device_add_device: Insert the 'edac_dev' structure into the
    * edac_device global list and create sysfs entries associated with

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      Last update: 2009-04-02 08:15    [W:0.054 / U:0.168 seconds]
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