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authorIra Weiny <weiny2@llnl.gov>2010-07-14 01:53:18 +0000
committerRoland Dreier <rolandd@cisco.com>2010-08-03 13:59:19 -0700
commit4c6931f5d4f423238ae6e93423081c6ff9753d26 (patch)
tree7bad11aa4fd0ebe68bd7567e52862942e140fa75 /drivers/infiniband
parent0502f94c62be79d1f4ae6f53ceaefde67ef3cea2 (diff)
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/qib/qib_sysfs.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
index dab4d9f4a2cc..d50a33fe8bbc 100644
--- a/drivers/infiniband/hw/qib/qib_sysfs.c
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -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 = {