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Commit 4c6931f5 authored by Ira Weiny's avatar Ira Weiny Committed by Roland Dreier
Browse files

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



Signed-off-by: default avatarIra Weiny <weiny2@llnl.gov>
Acked-by: default avatarRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 0502f94c

drivers/infiniband/hw/qib/qib_sysfs.c

+20 −1
Original line number Diff line number Diff line
@@ -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 = {