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IB/qib: Allow writes to the diag_counters to be able to clear them 

Signed-off-by: Ira Weiny <weiny2@llnl.gov>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ira Weiny 2010-07-14 01:53:18 +00:00 committed by Roland Dreier
parent 0502f94c62
commit 4c6931f5d4
1 changed files with 20 additions and 1 deletions
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21
drivers/infiniband/hw/qib/qib_sysfs.c
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@ -347,7 +347,7 @@ static struct kobj_type qib_sl2vl_ktype = {
#define QIB_DIAGC_ATTR(N) \
static struct qib_diagc_attr qib_diagc_attr_##N = { \
.attr = { .name = __stringify(N), .mode = 0444 }, \
.attr = { .name = __stringify(N), .mode = 0664 }, \
.counter = offsetof(struct qib_ibport, n_##N) \
}
@ -403,8 +403,27 @@ static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr,
return sprintf(buf, "%u\n", *(u32 *)((char *)qibp + dattr->counter));
}
static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t size)
{
struct qib_diagc_attr *dattr =
container_of(attr, struct qib_diagc_attr, attr);
struct qib_pportdata *ppd =
container_of(kobj, struct qib_pportdata, diagc_kobj);
struct qib_ibport *qibp = &ppd->ibport_data;
char *endp;
long val = simple_strtol(buf, &endp, 0);
if (val < 0 || endp == buf)
return -EINVAL;
*(u32 *)((char *) qibp + dattr->counter) = val;
return size;
}
static const struct sysfs_ops qib_diagc_ops = {
.show = diagc_attr_show,
.store = diagc_attr_store,
};
static struct kobj_type qib_diagc_ktype = {