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| author | Ira Weiny <weiny2@llnl.gov> | 2010-07-14 01:53:18 +0000 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-08-03 13:59:19 -0700 |
| commit | 4c6931f5d4f423238ae6e93423081c6ff9753d26 (patch) | |
| tree | 7bad11aa4fd0ebe68bd7567e52862942e140fa75 | |
| parent | 0502f94c62be79d1f4ae6f53ceaefde67ef3cea2 (diff) | |
| download | blackbird-op-linux-4c6931f5d4f423238ae6e93423081c6ff9753d26.tar.gz blackbird-op-linux-4c6931f5d4f423238ae6e93423081c6ff9753d26.zip | |
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>
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_sysfs.c | 21 |
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 = { |
