memset(eld) clears eld->proc_entry which will leak the struct
snd_info_entry when unloading the module.
Fix it by
- remove memset(eld)
- set eld->eld_valid to true _after_ all eld fields have been filled
- don't access the other eld fields when (eld->eld_valid == false)
Signed-off-by: Wu Fengguang <fengguang...@intel.com>
---
sound/pci/hda/hda_eld.c | 5 +----
sound/pci/hda/patch_hdmi.c | 11 +++++------
2 files changed, 6 insertions(+), 10 deletions(-)
--- linux.orig/sound/pci/hda/hda_eld.c 2011-11-15 21:02:25.000000000 +0800
+++ linux/sound/pci/hda/hda_eld.c 2011-11-15 21:13:46.000000000 +0800
@@ -297,10 +297,10 @@ static int hdmi_update_eld(struct hdmi_e
buf + ELD_FIXED_BYTES + mnl + 3 * i);
}
+ e->eld_valid = true;
return 0;
out_fail:
- e->eld_ver = 0;
return -EINVAL;
}
@@ -323,9 +323,6 @@ int snd_hdmi_get_eld(struct hdmi_eld *el
* ELD is valid, actual eld_size is assigned in hdmi_update_eld()
*/
- if (!eld->eld_valid)
- return -ENOENT;
-
size = snd_hdmi_get_eld_size(codec, nid);
if (size == 0) {
/* wfg: workaround for ASUS P5E-VM HDMI board */
--- linux.orig/sound/pci/hda/patch_hdmi.c 2011-11-15 21:02:25.000000000
+0800
+++ linux/sound/pci/hda/patch_hdmi.c 2011-11-15 21:13:42.000000000 +0800
@@ -980,20 +980,19 @@ static void hdmi_present_sense(struct hd
* the unsolicited response to avoid custom WARs.
*/
int present = snd_hda_pin_sense(codec, pin_nid);
+ bool eld_valid = false;
- memset(eld, 0, sizeof(*eld));
+ eld->eld_valid = false;
eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
if (eld->monitor_present)
- eld->eld_valid = !!(present & AC_PINSENSE_ELDV);
- else
- eld->eld_valid = 0;
+ eld_valid = !!(present & AC_PINSENSE_ELDV);
printk(KERN_INFO
"HDMI status: Codec=%d Pin=%d Presence_Detect=%d
ELD_Valid=%d\n",
- codec->addr, pin_nid, eld->monitor_present, eld->eld_valid);
+ codec->addr, pin_nid, eld->monitor_present, eld_valid);
- if (eld->eld_valid)
+ if (eld_valid)
if (!snd_hdmi_get_eld(eld, codec, pin_nid))
snd_hdmi_show_eld(eld);
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