diff options
| author | Borislav Petkov <bp@suse.de> | 2014-02-03 15:05:13 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-22 13:35:00 -0800 |
| commit | 096a9cf95768f0dceb9c0ade97c5a7368a999f11 (patch) | |
| tree | 3c9d76de7022bf1c89010f1c2629063933089e4d /drivers | |
| parent | 33cd95fbe3402a2816f7a5369e8bc9a8dfe4a7da (diff) | |
| download | lwn-096a9cf95768f0dceb9c0ade97c5a7368a999f11.tar.gz lwn-096a9cf95768f0dceb9c0ade97c5a7368a999f11.zip | |
EDAC: Poll timeout cannot be zero, p2
commit 9da21b1509d8aa7ab4846722817d16c72d656c91 upstream.
Sanitize code even more to accept unsigned longs only and to not allow
polling intervals below 1 second as this is unnecessary and doesn't make
much sense anyway for polling errors.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/edac/edac_mc.c | 4 | ||||
| -rw-r--r-- | drivers/edac/edac_mc_sysfs.c | 10 | ||||
| -rw-r--r-- | drivers/edac/edac_module.h | 2 |
3 files changed, 9 insertions, 7 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index e8c9ef03495b..aef5ec24908e 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -601,7 +601,7 @@ static void edac_mc_workq_teardown(struct mem_ctl_info *mci) * user space has updated our poll period value, need to * reset our workq delays */ -void edac_mc_reset_delay_period(int value) +void edac_mc_reset_delay_period(unsigned long value) { struct mem_ctl_info *mci; struct list_head *item; @@ -611,7 +611,7 @@ void edac_mc_reset_delay_period(int value) list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); - edac_mc_workq_setup(mci, (unsigned long) value); + edac_mc_workq_setup(mci, value); } mutex_unlock(&mem_ctls_mutex); diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index c855b7116fcf..e5bdf216effe 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -52,18 +52,20 @@ int edac_mc_get_poll_msec(void) static int edac_set_poll_msec(const char *val, struct kernel_param *kp) { - long l; + unsigned long l; int ret; if (!val) return -EINVAL; - ret = kstrtol(val, 0, &l); + ret = kstrtoul(val, 0, &l); if (ret) return ret; - if (!l || ((int)l != l)) + + if (l < 1000) return -EINVAL; - *((int *)kp->arg) = l; + + *((unsigned long *)kp->arg) = l; /* notify edac_mc engine to reset the poll period */ edac_mc_reset_delay_period(l); diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h index 3d139c6e7fe3..f2118bfcf8df 100644 --- a/drivers/edac/edac_module.h +++ b/drivers/edac/edac_module.h @@ -52,7 +52,7 @@ extern void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, extern void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev); extern void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev, unsigned long value); -extern void edac_mc_reset_delay_period(int value); +extern void edac_mc_reset_delay_period(unsigned long value); extern void *edac_align_ptr(void **p, unsigned size, int n_elems); |