From 4c6931f5d4f423238ae6e93423081c6ff9753d26 Mon Sep 17 00:00:00 2001 From: Ira Weiny Date: Wed, 14 Jul 2010 01:53:18 +0000 Subject: [PATCH] IB/qib: Allow writes to the diag_counters to be able to clear them Signed-off-by: Ira Weiny Acked-by: Ralph Campbell Signed-off-by: Roland Dreier --- drivers/infiniband/hw/qib/qib_sysfs.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) 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 = {